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GCF/LCM Review Name ______________________________________ 1) Which is a factor of 49? A. 2 B. 3 C. 11 D. 98 7) What is the greatest common factor of 15, 75, and 150? A. 5 B. 15 C. 30 D. 150 2) Which set of numbers contains all of the factors of 24? A. 0,1,2,3,4,6,8,9 B. 2,3,4,6,8,12,24 C. 1,2,3,4,6,8, 12, 24 D. 24,48,72,96 3) Which is a prime factor of 35? A. 2 B. 7 C. 11 D. 3 4) What is the correct prime factorization of 64? A. 8 x 32 B. 23 C. 26 D. 23 x 8 5) What is the correct prime factorization of 175? A. 3 x 3 x 5 B. 3 x 3 x 7 C. 3 x 5 x 7 D. 5 x 5 x 7 6) What is the least common multiple of 9, 12, and 36? A. 36 B. 72 C. 108 D. 1,440 8) What are the greatest common factor and least common multiple of 15 and 30? A. 5, 30 B. 5, 60 C. 15, 30 D. 15, 60 9) What common denominator should be used to add these fractions? 3 5 1 , , 5 6 2 A. 6 B. 12 C. 24 D. 30 10) Which value is the least common multiple of the following set of numbers? 2, 3, 8, 9 A. 36 B. 45 C. 72 D. 144 MIXED REVIEW 15) Divide: 11) In a shipment of 30 light bulbs, 3 light bulbs were broken. What percent of the light bulbs were broken? A. 9% B. 10% C. 30% D. 90% 13) What is the proper equation to solve the written statement below? Three more than a number is 18. A. x = 18 B. 3x = 18 C. x = 3 + 18 D. x + 3 = 18 14) Multiply: (a) (b) (c) (d) 1 5 7 8 5 18 10 18 5 12 𝑥 2 3 = 4 ÷ = 5 3 (a) 1 8 4 (b) 1 15 9 (c) 1 10 1 (d) 1 8 16) Divide: 12) Tarik left a 22% tip for the waitress who served his family. The meal cost $82.50. How much tip did Tarik leave? A. $7.50 B. $8.50 C. $10.50 D. $31.00 9 10 (a) (b) 1 24 ÷ 4 = 9 12 9 16 (c) 1 (d) 9 Use the number line below to answer the following questions. 17) Which point on the number line represents 4.25? (a) A (b) B (c) C (d) D 18) Which point on the number line represents (a) (b) (c) (d) E F G H 39 ? 4