New SAT Math Workbook

88 506 d 7 3542 83 d 15 415 830 1245 d 7314 100

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Unformatted text preview: t, when multiplied by 617, must give 333,180 as an answer, the quotient must end in a number which, when multiplied by 617, will end in 0. This can only be (D), since 617 times (A) would end in 7, (B) would end in 4, (C) in 3, and (E) in 5. 4. 53.72 –22.31 31.41 9 9 10 0 . 0 1 0 5. (D) –5 2 . 1 8 4 7 .8 2 www.petersons.com 16 Chapter 1 Exercise 6 437 × .24 1748 (C) 8740 104.88 5.06 (D) × .7 3.542 83 (D) × 1.5 415 830 124.5 (D) .7314 × 100 73.14 Just move the decimal point two places to the right. Exercise 7 1. (B) Just move decimal point two places to left, giving .043 as the answer. 1. 2. 14.57 (C) . 3 4. 371 ) 3. 2. 1.6 (D) .4 .64 ) 4. (C) .12 ÷ 2.0 = .12 ÷ 4 = .03 .5 5. (D) 10.20 1.7 ÷ = 340 ÷ 17 = 20 .03 .1 3. Exercise 8 1. 2. 3. (D) (B) 8 + (4 ÷ 2) + (6 • 3) – 1 = 8 + 2 + 18 – 1 = 27 (16 ÷ 4) + (2 • 3) + 2 – (8 ÷ 2) = 4+6+2–4=8 4. (a, x)(b, z)(c, y)(d, u)(e, w) 5. .0008 (B) × 4.3 24 320 .00344 Exercise 9 1. 2. 3. (C) (C) (C) Estimate 500 + 2000 100 6000 ⋅ 300 400 + 600 800 + 500 1500 - 900 = 2500 100 = 25, closest to 20 Estimate = 1, 800, 000 1000 1300 600 = 1800 Estimate = = about 2 www.petersons.com Operations with Whole Numbers and Decimals 17 Retest 1. (C) 86 4861 + 205 5152 79 7. (B) 8.35 × .43 2505 33400 3.5905 8 0 13 2. (D) – 4 5 9 34 4 26.7 . 1 1 2.937 (C) 22 73 8. ) 3. 908 (A) × 65 4540 54480 59, 020 923 (B) 72 66456 648 165 144 216 216 66 77 77 9. (C) 8 + (10 ÷ 2) + (4 • 2) – (21 ÷ 7) = 8 + 5 + 8 – 3 = 18 4. ) 3000 + 1000 10. (A) Estimate closest to .02. 6000 30 = 4000 180, 000 = .0 2, which is 5. (E) .361 8.7 + 43.17 52.231 4 8 6. 5 1 0. 9 1 0 (C) – 2 3. 1 7 2 7. 7 3 www.petersons.com Operations with Fractions 2 DIAGNOSTIC TEST Directions: Work out each problem. Circle the letter that appears before your answer. Answers are at the end of the chapter. 1. The sum of (A) (B) (C) (D) (E) 2. 1 2 27 20 3 2 91 60 5 1 12 3 9 from . 4 10 32 1 , , and is 53 4 4. 5 4 5 ÷ ⋅ 6 3 4 is equal to (A) (B) (C) (D) (E) 5. 2...
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