Unit 2 Practice Test: GCF and LCM

What is the GCF of 24 and 36?

• 12

• 6

• 18

• 24

Tags

CCSS.6.NS.B.4

What is the prime factorization of 60?

• 2 x 2 x 3 x 5

• 2 x 2 x 3 x 3 x 5 x 5 x 5

• 2 x 3 x 5

• 5 × 12

What is the LCM of 8 and 12?

Tags

CCSS.6.NS.B.4

Select ALL That Apply: Which of the following are factors of 18?

• 1

• 2

• 3

• 9

• 6

Tags

CCSS.4.OA.B.4

Rewrite the addition sentence 8 + 12 by factoring out the GCF. What is the factored form?

• 2(4 + 6)

• 4(2 + 3)

• 3(4 + 2)

Tags

CCSS.6.NS.B.4

CCSS.6.EE.A.3

Find the GCF of 45 and 30.

• 15

• 5

• 30

• 45

Tags

CCSS.6.NS.B.4

Which of the following is the LCM of 6 and 8?

• 24

• 48

• 16

• 12

Tags

CCSS.6.NS.B.4

Add these fraction by finding the common denominator. Your final fractions should be written in simplest form. 2/5 + 3/10

• 7/10

• 4/5

• 5/10

• 1/2

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Rewrite the addition sentence 15 + 25 by factoring out the GCF. What is the factored form?

• 5(3 + 5)

• 3(5 + 8)

• 10(1.5 + 2.5)

• 2(7.5 + 12.5)

Tags

CCSS.6.NS.B.4

A prime number is _______.

• A number whose only factors are one and itself.

• A number which has more than 2 factors.

Tags

CCSS.4.OA.B.4