Back to Exercise: Find the greatest common factor and the least common multiple

Find the Greatest Common Factor and the Least Common Multiple

Show your factor lists or prime factorizations. Show your multiple lists for LCM problems.

Grade 6·21 problems·~35 min·Common Core Math - Grade 6·standard·6-ns-b-4

Work through problems with immediate feedback

A

Recall / Warm-Up

1.

Which of the following is a factor of 24?

A.

7

B.

8

C.

9

D.

11

2.

Which of the following is a multiple of 6?

A.

16

B.

26

C.

36

D.

46

3.

Apply the distributive property: $4 \times (9 + 2) = ?$

B

Fluency Practice

1.

What is GCF(24, 36)?

2.

What is GCF(18, 45)?

A.

3

B.

9

C.

90

D.

6

$Factor trees for 60 and 84 showing prime factorizations 2² × 3 × 5 and 2² × 3 × 7, with common factors 2² × 3 = 12 highlighted$

3.

Find GCF(60, 84).

4.

What is LCM(8, 12)?

5.

Find LCM(5, 7).

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