TOPIC 3 STUDY GUIDE

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CCSS.7.NS.A.1D

Tell which number is prime: 51, 53, 56, 57.

• 53

• 56

• 57

• 51

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CCSS.4.OA.B.4

The local reader’s club has a set of 28 hardback books and a set of 44 paperbacks. Each set can be divided equally among the club members. What is the greatest possible number of club members?

• 308

• 4

• 2

• 8

Find the GCF of 32 and 56.

• 32

• 24

• 224

• 8

Find the prime factorization of 160.

• 1 x 2 x 2 x 2 x 2 x 2 x 5

• 2 x 2 x 2 x 10

• 2 x 2 x 2 x 2 x 2 x 5

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CCSS.4.OA.B.4

Find the LCM of 6 and 21.

• 42

• 3

• 84

• 126

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CCSS.6.EE.A.3

WRITE AN EQUIVALENT EXPRESSION 2 + 4 ( c + 7)

• 30 + 4 c

• 6 c + 9

• 15 + 4 c

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CCSS.6.EE.A.4

Which of the following expressions is equivalent to 3 (x + 4) – 6 + 5x?

• 3 x + 12 - x

• 8x + 6

• 8 x - 2

• 2 x + 6

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CCSS.6.EE.A.4

5 ( x + 10) + x

• 6 x + 15

• 5 x + 15

• 6x + 50

• 4 x - 50

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CCSS.6.EE.A.3