New SAT Math Workbook

Be sure to multiply the 1 by 12 also 98 1 12 6 18

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Unformatted text preview: ractions in the given numerator and denominator. Example: 11 + 64 11 + 23 Solution: The smallest number into which 6, 4, 2, and 3 will divide is 12. Therefore, multiply every term of the fraction by 12 to simplify the fraction. 2+3 5 1 = = 6 + 4 10 2 Example: 32 43 1 1+ 2 Solution: Again, we multiply every term by 12. Be sure to multiply the 1 by 12 also. 9−8 1 = 12 + 6 18 Exercise 6 Work out each problem. Circle the letter that appears before your answer. 211 ++ 364 Write as a fraction in simplest form: 2 1 32 1. 2. (A) (B) (C) (D) (E) 13 2 7 2 13 4 4 13 49 12 52 63 Simplify: 5 1 12 6 5 (A) 12 5 (B) 6 2 (C) 3 1 (D) 6 7 (E) 12 www.petersons.com 32 Chapter 2 3. 11 + ab Find the value of 1 when a = 2 and b = 3. ab 5 (A) 6 2 1 3 5. Find the value of (A) (B) (C) (D) (E) 4 17 21 25 7 6 12 51 14 53 1 1. 5 +3 2 3 (B) (C) (D) (E) 5 4 1 6 1 1 5 2 2 5 4. 11 + ab 1 1 Find the value of 1 when a = and b = . 2 3 ab 5 (A) 6 (B) (C) (D) (E) 5 4 1 6 1 1 5 2 2 5 www.petersons.com Operations with Fractions 33 RETEST Work out each problem. Circle the letter that appears before your answer. 1. The sum of (A) (B) (C) (D) (E) 8 12 113 60 1 5 10 9 11 6 43 1 , , and is 54 3 5. Subtract 62 (A) 37 2 from 100. 3 6. 2. 2 11 Subtract from . 3 15 3 (A) 4 7 (B) 5 5 (C) 7 1 (D) 15 1 (E) 3 1 3 1 (B) 38 3 2 (C) 37 3 2 (D) 38 3 2 (E) 28 3 2 8 Divide 2 by 4 . 5 10 (A) (B) (C) (D) (E) 7. 2 1 2 288 25 25 288 1 2 4 7 12 8 15 11 20 5 6 2 3 Which of the following fractions is the smallest? (A) (B) (C) (D) (E) 3. If 52,34p is divisible by 9, the digit represented by p must be (A) 1 (B) 2 (C) 3 (D) 4 (E) 5 3 1 34 5 + 4 ÷ 15 is equal to 5 (A) 3 5 (B) 8 8 (C) 3 8 (D) 5 3 (E) 8 4. 8. Which of the following fractions is closest to (A) (B) (C) (D) (E) 4 15 3 10 3 20 1 5 1 10 1 ? 4 www.petersons.com 34 Chapter 2 9. 52 + 23 Simplify: 3 5 + 46 1 ab 10. Find the value of 1 1 when a = 4, b = 5. a + b (A) (B) (C) (D) (E) 2 1 2 (A) (B) (C) (D) (E) 9 20 1 9 1 20 9 40 12 1 4 4 www.petersons.com Operations with Fractions 35 SOLUTIONS TO PRACTICE E...
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