Write the following numbers in figures. 1) Sixty thousand eight hundred and forty two= 60,842. 2) Fifty one thousand nine hundred and sixty= 51,960. 3) Sixty nine thousand six hundred and ten= 69,610 Betty the bear comes to visit Buzz the bee where Amber is also waiting for her. Betty teaches Amber to write numbers in figures in words.0:00 - Introduction. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators.

- Write the following numbers in numerals. a) Fifty eight thousand and five 58 005 b) Six million, four hundred and twelve thousand, two hundred and twenty 6 412 220 c) Seventy five point one two five 75.125 d) Four hundred and eight point zero two 408.02 e) One hundred and sixty two and fifteen thousandths 162.015 f) Two hundred and seven million and twenty 207 000 02
- 1. Write out numbers one to ten in words. 2. Use figures for 11 and above. 3. Avoid mixing words and figures in the same phrase. For example: 'You can order in multiples of 9, 12 or 16', not 'nine, 12 or 16'. 4. Always use figures in data if decimals or fractions are involved: 6.25 or 6 1/4. 5
- This converter will convert numbers to words and figures to words. The number to words can be done for real numbers and Scientific E Notation. Limited to use of 90 characters and 1e-90 and 1e+90. References for Number Names. mathforum.org - Writing Numbers in Words. wikipedia.org - Names of large numbers
- Tool to convert a number written in letters (with words) into a number written in digits (with 1,2,3,4,5,6,7,8,9,0). Reading numbers in letters is sometimes complicated
- Writing a number in expanded form means to write the value of each digit in the number. The number is written as the sum of the separate place values of each digit. For example 70 is written in expanded form as 70 + 2. 72 is made of two digits: 7 and 2
- For fiction, it's likely you'll often round off these numbers and/or write the numbers as words, but the rule is good to know. 1,000. 10,525. 10,525.78. 953,098,099 __ For dollar amounts written as numerals, use the period to separate dollars and cents, and include the dollar sign. But you could spell out the amount, especially if you're.

- Learning how to write numbers in English involves understanding the rules. Read on to find ways to remember the rules of when to write out numbers! you can use numerals or words to designate time, opting to comply with the rules of any style guide you are following (if applicable). We have to get up at 6 o'clock in the morning to be on time.
- what were we to do in this video is get some practice writing reasonably large numbers in different ways so for example let's say we had this number and I'm going to not say it out loud on purpose so this number right over here what I want to do is think about how would I write this out in words and I encourage you to pause this video and try to figure that out on your own before we do it.
- It is standard practice to always write numbers under 11, such as three and seven, in words in essays, articles, correspondence etc and use figures for higher number such as 35 and 14,500. Thanks! Helpful 2 Not Helpful
- Scientific Notation and Significant Figures Notes on scientific notation and significant figures prepared by Dr. Masingale, Le Moyne College Department of Chemistry. Scientific Notation All numbers, regardless of magnitude, can be expressed in the form: N x 10 n where N is a number, either an integer or decimal, between 1 and 10
- g one significant figure, write this in powers of ten in (a) years, (b) seconds. Answer. 2. (p.14 Ex.2) How many significant figures do each of the following numbers have: (a) 2142, (b) 81.60, (c) 7.63, (d) 0.03, (e) 0.0086, (f) 3236, and (g) 8700.
- We can also write it as one hundred seventy-nine, but if first digit in the number is 1 then we can use a single a instead of one. Hyphens are used between the smallest two digits in a number; between tens and units (ex. a hundred and twenty-seven), ten thousand and a thousand (six hundred and forty-seven thousand), ten.
- The number 450 has two significant figures and would be written in scientific notation as 4.5 × 10 2, whereas 450.0 has four significant figures and would be written as 4.500 × 10 2. In scientific notation, all reported digits are significant

In multiplication and division the number of significant figures is simply determined by the value of lowest digits. This means that if you multiplied or divided three numbers: 2.1, 4.005 and 4.5654, the value 2.1 which has the fewest number of digits would mandate that the answer be given only to two significant figures Writing numbers in words and standard form. Practice: Write whole numbers in expanded form. Comparing place values. Understanding place value . Place value when multiplying and dividing by 10 . Practice: Place value when multiplying and dividing by 10. Practice: Understand multiplying by a multiple of 10, 100, and 1000 Writing numbers: words and numerals. Published on August 7, 2015 by Sarah Vinz. Revised on April 2, 2021. Numbers can be written either as words (e.g., one hundred) or numerals (e.g., 100). In this article we follow the guidelines of APA Style, one of the most common style guides used in academic writing The ability to write numbers is elementary indeed and it is often taken for granted. But it is one of the fundations of literacy and there are some rules that should be obeyed in order to do it properly. Try to spell out all single-digit numbers and use numerals for numbers that are greater than nine How to use the sig fig calculator. Our significant figures calculator works in two modes - it performs arithmetic operations on multiple numbers (for example, 4.18 / 2.33) or simply rounds a number to your desired number of sig figs. Following the rules noted above, we can calculate sig figs by hand or by using the significant figures counter

Deciding whether to **write** **numbers** as numerals or as **number** words is a matter of style. The style for a literary publication may differ from the style for a journalistic publication. The key in all cases is to use a consistent style throughout your writing. Many publishers of literary works, such as literary journals and [ * Problem: Write the following number in scientific notation and round off to five significant figures: 0*.00392708 x 10 81 . a) 3.9271 x 10 84 b) 3.9270 x 10 78 c) 0.39271 x 10 78 d) 3.9270 x 10 80 e) 3.9271 x 10 7

4.50xx10^5 Consider that any number written in scientific notation must contain only one integer followed by a decimal point and the required number of significant figures. Also consider that 450 000 = 450 000.0 Therefore, assuming three significant figures is required (a standard scientific practice), the given number may be generally written as; 4.5xx10^n, where n is an integer Complete the following calculations and report your answers with the correct number of significant figures. The exponential factors, such as 103, are exact, and the 5280 in part (c) is exact. All the other numbers are not exact. a. 60458 significant figures 5 b. 11.62 significant figures 4 c. 4919 significant figures One way to unambiguously determine whether a zero is significant or not is to write a number in scientific notation. Scientific notation will include zeros in the coefficient of the number only if they are significant. Thus, the number 8.666 × 10 6 has four significant figures. However, the number 8.6660 × 10 6 has five significant figures. Ratios of Similar Figures. 1. Write the following ratio in simplest form: 32 min : 36 min a. 8 : 9 b. 8 : 36 c. 32 :9 d. 128 : 144 2. In a sports equipment locker, there are 81 balls and 45 baseball mitts. Write the ratio of balls to baseball mitts in simplest form. a. 9 : 5 b. 10 : 18 c. 10 : 5 d. 9 : 18 3. The price of 10 ounces of crackers.

Round off each of the following numbers to the indicated number of significant digits, and write the answer in standard scientific notation. a. 0.00034159 to three digits b. $103.351 \times 10^{2}$ to four digits c. 17.9915 to five digits d. $3.365 \times 10^{5}$ to three digit If we have counted four objects, for example, then the number 4 has an infinite number of significant figures (i.e., it represents 4.000). Similarly, 1 foot (ft) is defined to contain 12 inches (in), so the number 12 in the following equation has infinitely many significant figures Write the following number words in figures or in symbols? five hundred sixty eight five hundred sixty eight 1 See answer katiedano26 katiedano26 Five hundred Sixty Eight- 568. New questions in Math. Learning Task 4. Identify what kind of decimal number are the following.Choose the letter of the correct answer. Write your answer in yournotebook. Feb 12, 2013 - Free Printable Write the number of faces, edges and vertices in the following figures and Download free Write the number of faces, edges and vertices in the following figures along with coloring pages for other activities and coloring sheet

number: The figure number (e.g., Figure 1) appears above the figure title and image in bold font. Number figures in the order in which they are mentioned in your paper. title: The figure title appears one double-spaced line below the figure number. Give each figure a brief but descriptive title, and capitalize the figure title in italic title case Free Printable **Write** **the** **number** of faces, edges and vertices in the **following** **figures** and Download free **Write** **the** **number** of faces, edges and vertices in the **following** **figures** along with coloring pages for other activities and coloring sheet How does this write out number converter work? This tool can write out positive and negative numbers and even numbers with decimals. All you have to do is enter a number with one to nine digits and press the convert button. This is an example result: 567890 - five hundred and sixty-seven thousand, eight hundred and ninety Number figures and tables consecutively in the text, beginning with the number 1. Be sure to number figures and tables separately from each other. Capitalize the t in table and the f in figure when you refer to a specific table or figure created in your text. (Some journals do not follow this convention, but most do. Solve the numerical example. Write down the number of significant figures in the following: 0.003 m2, 0.1250 gm cm-2, 6.4 x 106 m, 1.6 x 10-19 C, 9.1 x 10-31 kg

A number of specific rules for spelling out numbers are outlined in Section 9.1 of the Chicago Manual of Style. Conclusion. Your ultimate authority will always be a style guide, but in the absence of one, following the rules outlined above will help you stay consistent in your use of numbers in writing This is the amazing channel for learning math skills. Learn how to write numbers in figure Look at the mixed numbers in the examples above. You will notice that the denominator of the fractional part is a factor of 10, making it is easy to convert to a decimal. Let's look at some examples in which the denominator is not a factor of 10. Example 3: Write each mixed number as a decimal. Analysis: A fraction bar tells us to divide When rounding off numbers to a certain number of significant figures, do so to the nearest value. example: Round to 3 significant figures: 2.3467 x 10 4 (Answer: 2.35 x 10 4) example: Round to 2 significant figures: 1.612 x 10 3 (Answer: 1.6 x 10 3) What happens if there is a 5? There is an arbitrary rule: If the number before the 5 is odd.

- State the number of significant figures in the following: (a) 0. 0 0 7 m 2 (b) 2. 6 4 × 1 0 2 4 k g (c) 0. 2 3 7 0 g c m − 3 (d) 6. 3 2 0 J (e) 6. 0 3 2 N m − 2 (f) 0. 0 0 0 6 0 3 2 m 2. Medium. Video Explanation. Answer. The significant figures of a number are those digits that carry meaning contributing to its measurement resolution.
- Write the following in figures: One hundred twenty-four point four two fiv
- If you're asking what is the rule for writing numbers in words, the recommendation is to employ particular or specific conventions when you write numbers in words. It includes the following: If you're writing numbers greater than 999 in words, you should place a comma immediately after the word thousand, as well as million. Example: Five.
- Example \(\PageIndex{6}\): write whole numbers. Write the following numbers using digits. fifty-three million, four hundred one thousand, seven hundred forty-two; nine billion, two hundred forty-six million, seventy-three thousand, one hundred eighty-nine; Solution. Identify the words that indicate periods
- Do you what number patterns are? Let us understand this with an example. 1, 4, 7, 10, 13, 16, What numbers are these? These are the numbers following a certain pattern or sequence. Th number starts with 1 and jumps three numbers every time. Let us study some figures and number patterns in detail. Suggested Video

- Writing numbers in words means writing numbers using alphabets. After learning to write numbers as digits for example 1, 2, 3 the next step is to learn to spell and write numbers using alphabets. This is a very important skill and children should know how to write every number in words
- Want to get the hiring manager's attention? When you're working in a job where your achievements are quantified, including numbers on your resume is the best way to get your application noticed.For example, if you're in sales, listing how you exceeded your goals is a sure-fire way to impress a prospective employer
- Writing Numbers. Except for a few basic rules, spelling out numbers vs. using figures (also called numerals) is largely a matter of writers' preference. Again, consistency is the key. Policies and philosophies vary from medium to medium
- Use Place Value to Name Whole Numbers. When you write a check, you write out the number in words as well as in digits. To write a number in words, write the number in each period followed by the name of the period without the 's' at the end. Start with the digit at the left, which has the largest place value
- Round off each of the following numbers to the indicated number of significant digits, and write the answer in standard scientific notation. a. 0.00034159 to three digits b. 103.351 × 10 2 to four digits c. 17.9915 to five digit
- based on the examples in the last video let's see if we can come up with some rules of thumb for figuring out how many significant figures or how many significant digits there are in a number or a measurement so the first thing that is pretty obvious is that any non-zero digit and any of the zero digits in between are significant clearly the 7 and the 5 here is significant and the 0 is in.

Figures are visuals such as charts, graphs, photos, drawings, and maps. Figures are normally identified by the capitalized word Figure and a number followed by a caption. A caption is a short block of text that gives information about the figure. The following seven tips explain how to write figure captions in your book, article, or research paper Over here we'LL have number of sick things here we have for nuns here Digits So all four are significant So for part B body were given is two of five meters squared here The zero is between two significant number values numbers So we have three significant figures to report. See, the value that were given is one point seven zero zero centimeters

The number of significant figures can be easily determined. It is easy to see that 4.545 × 10 6 has four significant figures. 3. Calculations can be simplified by using index laws. For example: 350000 × 102000000 = 3.5 × 10 5 × 1.02 × 10 8 =3.5 × 1.02 × 10 5 +8 = 3.57 × 10 13 Exercise 1 Write the following numbers in Scientific Notation ** How to number Tables and Figures: Figures and Tables are numbered independently, in the sequence in which you refer to them in the text, starting with Figure 1 and Table 1**. If, in revison, you change the presentation sequence of the figures and tables, you must renumber them to reflect the new sequence Which two of the following figures belong to Class A? 26. Write the number of the word which will come last in the dictionary? (1) Surprise (2) Portion (3) Dirt (4) Detect 27. Write the number of the word which will come last in the dictionary? (1) Entertainment (2) Efficient (3) Established (4) Elaborated 28. Write the number of the correct. Answer to: Perform the following calculation. Write the answer with the correct number of significant figures. 21.020 + 94.2 = By signing up,..

Significant Figures. The significant figures (or significant digits) of a number are the digits that are known with some degree of confidence.. Rules for significant figures: All non zero digits are significant. E.g. 325 has 3 significant figures, 52.34 has 4 significant figures. Zeros between non zero digits are significant. E.g. 1009 has 4 significant figures, 3.02 has 3 significant figures You can take the guesswork out of writing numbers by following one general guideline and remembering the major exceptions to it. The starting point is to spell out numbers under 10 in text. The company has five offices in Asia. For numbers 10 and above, use figures. The company operates in more than 150 markets Solution for Write down the number of significant figures in each of the following numbers. 1. 725836 2. 6500000 3. 3.680150 4. 470.00 0.00360725 Round the * The interval on the number line below shows all the possible real lengths of the envelope*. Write down the correct numbers for the lower and upper limits of the interval, represented on the diagram by A and B Make sure you understand how to express numbers in spoken English by following these rules. Below you will find numbers written out in order to help students learn the correct grouping in English. Generally speaking, numbers larger than nine should always be expressed by numbers in written English , while numbers under 10 should be written out

When writing for the Web: Write numbers with digits, not letters (23, not twenty-three). Use numerals even when the number is the first word in a sentence or bullet point. Use numerals for big numbers up to one billon: 2,000,000 is better than two million The number of significant figures in an expression shows the confidence or accuracy with which a person states a quantity. The following three rules are used to determine the number of significant numbers in a number: · Non-zero numbers are always significant · Any zeros between two significant numbers are significant

The primary reason for converting numbers into scientific notation is to make calculations with unusually large or small numbers less cumbersome. Because zeros are no longer used to set the decimal point, all of the digits in a number in scientific notation are significant, as shown by the following examples Each of the following numbers has two significant figures: 2.3*102 2.3 -0.23 0.0023 -2.3*105 2.3*10-4 (5) Writing an integer number (e.g., 350 m) presents a problem, because it does not clearly defines the number of significant figures (two significant figures or three?). Use th which every one of the four numbers has a significant figure is the tenths column (the first decimal place). Thus the sum must be rounded off to one decimal place. The answer would properly be reported as 17600.9 (6 significant figures) 2. Subtract the following numbers: 978.4 - 62.87 Answer: Set up the subtraction problem: 978.4 - 62.87 The. The Number of Significant Digits. Significant digits are all the numbers that are certain, and one digit that contains some uncertainty. When you record a measured number from an experiment, you must make sure that you write down the digits correctly.When doing calculations, we need to know the number of significant digits The answer is rounded to end at the last decimal place of the least precise measured number. This can be visualized by stacking all of the numbers with their decimal points aligned, adding or subtracting, and then rounding the answer to the rightmost column for which all the numbers have significant figures. Consider the following

Without the numbers, it's only a rough draft at best. An effective business plan has to include at least three important pro forma statements (pro forma in this context means projected) Figures should be labeled with a number followed by a descriptive caption or title. Captions should be concise but comprehensive. They should describe the data shown, draw attention to important features contained within the figure, and may sometimes also include interpretations of the data Figure Number . The number of the figure (e.g., Figure 1, Figure 2) appears above the figure and should be in boldface. Figures should be numbered in the order in which they are mentioned in the text. Note that APA 7th edition requires the figure numbers in bold. Figure Title. A figure should have a brief and descriptive title, and the title. Write the number of significant figures in each of the following measurements 1. 1.67 × 10-27 kg 2. 0.270 c Number names: Charts. You are just a click away to gain access to this vast collection of colorful number names charts. Pin them up to get students to identify number names that are available in different range: 1 to 5, 1 to 10, 1 to 20, 1 to 50, 1 to 100 and multiples of 10s and 100s

Place Value of a Number This selection will help you to find what the place value is of a particular digit in a number. Type your number here, then click Take my number, and we ' ll go from there Figure 10. Numbering format menu. 12. Check Include chapter number if you want your figure or table numbers to start with the chapter number. Note that this option gives you additional control over which headings indicate the start of new chapters and which separator (period, hyphen, colon, or dash) appears between the numbers 1,000,000 figure of a god with arms raised above his head. 3,244 and 21,237 The conventions for reading and writing numbers is quite simple; the higher number is always written in front of the lower number and where there is more than one row of numbers the reader should start at the top Keep the following in mind when including a figure in your paper: The figure number, in bold text, belongs above the figure. The figure title belongs one double-spaced line below the figure number. The title should be in title case and italics. Color can be used in the figure if it is necessary for understanding the material

- 3 the zeros written to the left of the first non zero digit in a number are non significant.They simply indicate the position of the decimal point. 4 all zeros placed to the right of a decimal point in a number are significant. (i) 0.0025. There are 2 significant figures. (ii) 208. There are 3 significant figures. (iii) 5005. There are 4.
- 2. Round off the following numbers as indicated and write the answer in scientific notation form: a) Round off 45 379 662 to 3 significant figures ans. a) 45 400 000 b) Round off 739966 to 4 significant figures b) 740 000 c) Round off 0.025988 to 3 significant figures c) 0.026
- A triangular number or triangle number counts objects arranged in an equilateral triangle.Triangular numbers are a type of figurate number, other examples being square numbers and cube numbers.The n th triangular number is the number of dots in the triangular arrangement with n dots on a side, and is equal to the sum of the n natural numbers from 1 to n..

The first factor has four significant figures and the second factor has two significant figures. Your solution will, therefore, end up with two significant figures. In this case, it will be 17 instead of 17.4778. You perform the calculation then round your solution to the correct number of significant figures. The extra precision in the. Ie: Don't spell out numbers half of the time and use figures the other half, it becomes confusing for anyone who might be reading your work. When it comes to deciding whether or not to write numerical numbers or to write numbers in words, there are a few schools of thought, although none are considered to be concrete or 'written in stone. The number may be rounded or padded with zeros to give it the correct number of significant figures. When multiplying values together, your result is only as significant as your least significant value. The least significant decimal is the place that holds the last significant digit. For example, 243.3's least significant decimal is -1 (10^-1. write down the number of significsnt figures in the following 0.003 m², 0.1250 gm cm‐² ,6.4 × 10⁶ m , 1.6 × 10‐¹⁹ c 9.1× 10‐³¹ kg . 1 See answe That is the number 0.000000001. Be aware that this number in exponential notation is 10¯ 9. To emphasize the factoring idea, we would have this: 4.59 x 0.000000001 = 0.00000000459. Step 3 - Write 4.59 times the other number, BUT, write the other number as a power of 10. The number of decimal places you counted gives the power of ten

When it comes to how many significant figures are there in an exact number, simply the answer will always be infinites. Yes, remember that an exact number has infinite significant figures. You can write 7 as 7.0 or 7.00 or even 7.0000. Remember that whenever you add a zero after the decimal, the number of sig figs in 7 increases For the sake of clarity I have boiled this complex topic down to the following rules for German and US/UK English when it comes to writing figures, e.g. in multilingual financial reports: 1. Symbol for the decimal separator In German: EUR 999, 50 or EUR 2, 5 Millionen In English: EUR 999. 50 or EUR 2. 5 millio A shorthand method of writing very small and very large numbers is called scientific notation, in which we express numbers in terms of exponents of 10. To write a number in scientific notation, move the decimal point to the right of the first digit in the number. Write the digits as a decimal number between 1 and 10 The zeros in 1300 may or may not be significant depending on the style of writing numbers. They could mean the number is known to the last digit, or they could be placekeepers. So 1300 could have two, three, or four significant figures. (To avoid this ambiguity, write 1300 in scientific notation. For example, writing just 450 incites that the following zero after four and five is not to be regarded as a significant digit and thus totals the number of significant digits at two. Exact numbers are gifted with infinite numbers of significant digits. It sounds confusing, but this particular rule only applies to specific numbers that.

Solve the following equations using the correct number of significant figures. a. 34.683 + 58.930 + 68.35112 161.964 b. 45001 - 56.355 - 78.44 44866 c. 0.003 + 3.5198 + 0.0118 3.535 d. 36.01 - 0.4 - 15 21; Solve the following equations using the correct number of significant figures Express the base-10 logarithm of a value using the same number of significant figures as is present in the normalized form of that value. Similarly, for antilogarithms (numbers expressed as powers of 10), use the same number of significant figures as are in that power. (If you are in a first-semester course, you can probably forget about this. * For the determination of significant values, we do not consider the power of 10 (Number is not less than 1)*. The digits 2, 6, and 4 are significant figures. It has 3 significant digits. (c)The value is . For the given value with decimals, all the numbers 2, 3, 7 and 0 are significant. It has 4 significant digits. (d) The value is Use numerals for decimal figures such as 3.14, and include a zero at the beginning of a number less than one, such as 0.375. Again, omit trailing zeroes unless they are central to the accuracy of the data that you're discussing. Write out fractions in words, such as two-fifths, only if the number is less than one

In scientific notation, a number is expressed as some power of ten multiplied by a number between 1 and 10. A simple and scientific method to write small or large numbers is to express them in some power of 10. The distance of the moon from Earth is 384000000 meters. This is a large number, it can also be expressed as 3.84×10 8 m. This way of. Tables and Figures are assigned numbers separately and in the sequence that you will refer to them from the text. The first Table you refer to is Table 1, the next Table 2 and so forth. Similarly, the first Figure is Figure 1, the next Figure 2, etc Express the result of the following calculation to the appropriate number of significant figures: (I) 3.24 ×0.08666/5.0065 (II) 0.58 + 324.65 asked May 29, 2018 in Chemistry by Golu ( 106k points) some basic concepts of chemistr We should either place a tiny bar on the ending zero, or write it in scientific notation as 8.470x10 3 milligrams. Recall that the last zeros of a decimal number count as significant. Exercise 3: Do the following operations and write the results with the correct number of significant figures: 1) 75m x 4m = 2) 75cm x 4.0cm = 3) 0.750 ft x 4.000 ft

Significant Figures and Units. Overview: In reporting numerical results, it is important to include the correct number of significant digits. While determining the correct number of digits to include is a straightforward process, beginning students often overlook this important detail How to Write Numbers in Scientific Notation Scientific notation allows us to express a very small or very large number in a compact form. The primary components of a number written in scientific notation are as follows: So in a nutshell, scientific notation is composed of a number part called (a number greater than Writing Numbers in Scientific Notation Read More

Write the following numbers in ascending and descending order. 6, 78, 421, 9, 83, 241, 8, 52, 543. Ascending order. In this, we have single, two and three digits numbers. Single digit number is smaller than two digit number and two digit is smaller than three digit. So the smallest number will be the single digit number numbers that suggest a specific place in a series Chapter 4 was considered required reading. numbers that represent scores or points on a scale The student scored a perfect 7. numbers that precede units of measurement Each post was roughly 2.45 ft apart. numbers that represent a part of a mathematical expressio

4.How many significant figures are in the number 0.01000? This is tricky and requires some thought. As an exponential number it can be represented as 1.000 x 10-2 and then the presence of FOUR significant figures becomes evident. 5.How many of the following numbers have 4 significant figures? 3.0156, 18.00, 0.007000, 3.45 x 10 4 and 0.002 more_vert Indicate the **number** of significant **figures** **in** each of the **following**: 250. 250 2.5 × 10 2 250. graph complex numbers and write them in terms of trigonometric functions. The Complex Plane We know that a real number can be represented as a point on a number line. By contrast, a complex number is represented as a point in a coordi-nate plane,as shown in Figure 6.38 at the top of the next page.The horizontal axis o DEF: A significant figure is a reliably known digit. • Because zeros serve as counters and to set the decimal point, they present a problem when determining significant figures in a number. A. Rules for Determining Significant Figures in a Number 1. All non-zero numbers are significant. 2. Zeros within a number are always significant. 3 When to write numbers in words Write in words all numbers under one hundred, rounded numbers and ordinal numbers write in words the number for approximate figures (including fractions) and for full, half and quarter hour times. In the following situations, there is a degree of choice open to you. In such circumstances, it is of critical.

Example: Determine the number of significant figures in the following value: 0.003840 Problem : Translate the following numbers into standard notation, maintaining the same number of significant figures SAMPLE EXERCISE 1.6. How many significant figures are in each of the following numbers (assume that each number is a measured quantity): (a) 4.003; (b) (c) 5000? Solution (a) Four; the zeros are significant figures. (b) Four; the exponential term does not add to the number of significant figures.(c) One, two, three, or four. In this case the ambiguity could have been avoided by using. 1000 has one significant digit: only the 1 is interesting (only it tells us anything specific); we don't know anything for sure about the hundreds, tens, or units places; the zeroes may just be placeholders; they may have rounded something off to get this value.. 1000.0 has five significant digits: the .0 tells us something interesting about the presumed accuracy of the measurement being.