Fundamentals of Mathematics, 2008a

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128 CHAPTER 2. MULTIPLICATION AND DIVISION OF WHOLE NUMBERS Division by 9 A whole number is divisible by 9 if the sum <strong>of</strong> its digits is divisible by 9. The number 702 is divisible by 9 since 7 + 0 + 2 is divisible by 9. The number 6588 is divisible by 9 since 6 + 5 + 8 + 8 = 27 is divisible by 9. The number 14,123 is not divisible by 9 since 1 + 4 + 1 + 2 + 3 = 11 is not divisible by 9. Division by 10 A Whole number is divisible by 10 if its last digit is 0. 2.5.3.1 Sample Set B Example 2.34 The numbers 30, 170, 16,240, and 865,000 are all divisible by 10. 2.5.3.2 Practice Set B State which <strong>of</strong> the following whole numbers are divisible 6, 8, 9, or 10. Some numbers may be divisible by more than one number. Exercise 2.5.8 (Solution on p. 148.) 900 Exercise 2.5.9 (Solution on p. 148.) 6,402 Exercise 2.5.10 (Solution on p. 148.) 6,660 Exercise 2.5.11 (Solution on p. 148.) 55,116 2.5.4 Exercises For the following 30 problems, specify if the whole number is divisible by 2, 3, 4, 5, 6, 8, 9, or 10. Write "none" if the number is not divisible by any digit other than 1. Some numbers may be divisible by more than one number. Exercise 2.5.12 (Solution on p. 148.) 48 Exercise 2.5.13 85 Exercise 2.5.14 (Solution on p. 148.) 30 Exercise 2.5.15 83 Exercise 2.5.16 (Solution on p. 148.) 98 Exercise 2.5.17 972 Exercise 2.5.18 (Solution on p. 148.) 892 Available for free at Connexions
129 Exercise 2.5.19 676 Exercise 2.5.20 (Solution on p. 148.) 903 Exercise 2.5.21 800 Exercise 2.5.22 (Solution on p. 148.) 223 Exercise 2.5.23 836 Exercise 2.5.24 (Solution on p. 148.) 665 Exercise 2.5.25 4,381 Exercise 2.5.26 (Solution on p. 148.) 2,195 Exercise 2.5.27 2,544 Exercise 2.5.28 (Solution on p. 148.) 5,172 Exercise 2.5.29 1,307 Exercise 2.5.30 (Solution on p. 148.) 1,050 Exercise 2.5.31 3,898 Exercise 2.5.32 (Solution on p. 148.) 1,621 Exercise 2.5.33 27,808 Exercise 2.5.34 (Solution on p. 148.) 45,764 Exercise 2.5.35 49,198 Exercise 2.5.36 (Solution on p. 148.) 296,122 Exercise 2.5.37 178,656 Exercise 2.5.38 (Solution on p. 149.) 5,102,417 Exercise 2.5.39 16,990,792 Exercise 2.5.40 (Solution on p. 149.) 620,157,659 Exercise 2.5.41 457,687,705 Available for free at Connexions
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186 3.6.3.2 Practice Set B CHAPTER
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200 CHAPTER 3. Solutions to Exercis
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214 CHAPTER 4. INTRODUCTION TO FRAC
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220 4.2.6 Exercises CHAPTER 4. INTR
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226 Thus, CHAPTER 4. INTRODUCTION T
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236 4.4.3.1.1 Sample Set B CHAPTER
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250 √ 9 100 = 3 10 Example 4.45 4
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262 CHAPTER 4. 4.7.2 Multiplication
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268 CHAPTER 4. 4.8 Summary of Key C
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278 CHAPTER 4. Solutions to Exercis
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296 CHAPTER 5. ADDITION AND SUBTRAC
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304 5.3.4 Exercises CHAPTER 5. ADDI
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340 CHAPTER 6. DECIMALS • underst
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344 CHAPTER 6. DECIMALS 0.17 6.2.5.
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346 CHAPTER 6. DECIMALS 6.2.6.1 Exe
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348 CHAPTER 6. DECIMALS 4 + .006 1
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352 CHAPTER 6. DECIMALS 6.4.3 Exerc
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354 CHAPTER 6. DECIMALS Exercise 6.
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356 CHAPTER 6. DECIMALS 841.0056 47
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358 CHAPTER 6. DECIMALS The sum is
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362 CHAPTER 6. DECIMALS Thus, 6.5
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364 CHAPTER 6. DECIMALS Table 6.15
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366 CHAPTER 6. DECIMALS 6.6.6.1 Sam
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372 CHAPTER 6. DECIMALS 6.7.3 A Met
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374 CHAPTER 6. DECIMALS Method of D
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378 CHAPTER 6. DECIMALS 816.241 10)
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382 CHAPTER 6. DECIMALS Table 6.29
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384 CHAPTER 6. DECIMALS Repeating D
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386 CHAPTER 6. DECIMALS .1818 11)2.
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390 CHAPTER 6. DECIMALS .125 8)1.00
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396 CHAPTER 6. DECIMALS 6.10.3 Exer
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398 CHAPTER 6. DECIMALS 6.11 Summar
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400 CHAPTER 6. DECIMALS 6.12.1.2 Co
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404 CHAPTER 6. DECIMALS Solutions t
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406 CHAPTER 6. DECIMALS Solution to
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420 CHAPTER 7. RATIOS AND RATES 7.2
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476 CHAPTER 7. RATIOS AND RATES Ava
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478 CHAPTER 8. TECHNIQUES OF ESTIMA
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514 CHAPTER 9. MEASUREMENT AND GEOM
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578 CHAPTER 10. SIGNED NUMBERS 10.2
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632 CHAPTER 11. ALGEBRAIC EXPRESSIO
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694 INDEX Index of Keywords and Ter
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696 INDEX Ÿ 3.4(172), Ÿ 3.5(180),
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698 INDEX reading, Ÿ 1.3(15) readi
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700 ATTRIBUTIONS Module: "Addition
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702 ATTRIBUTIONS Module: "Multiplic
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704 ATTRIBUTIONS Module: "Introduct
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706 ATTRIBUTIONS Module: "Addition
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708 ATTRIBUTIONS Module: "Decimals:
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716 ATTRIBUTIONS Module: "Algebraic
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Fundamentals of Mathematics Fundame
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Fundamentals of Mathematics, 2008a

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