Foundations SM1 Review #3

Which number is a factor of 20?

• 5
• 3
• 6

Tags

CCSS.4.OA.B.4

Which number is a factor of 15

• 2
• 9
• 3

Tags

CCSS.4.OA.B.4

Which number is a prime number?

• 8
• 10
• 3

Tags

CCSS.4.OA.B.4

Which number is a composite number?

• 10
• 5
• 7

Tags

CCSS.4.OA.B.4

A prime number...

• has one factor.
• has more than 2 factors.
• has 100 factors.
• has exactly 2 factors: 1 and the itself.

Tags

CCSS.4.OA.B.4

Use a number tree to find the prime factorization of 42

• 4x4x3
• 6x7
• 7x3x2
• 5x4x2

Use a number tree to find the prime factorization of 60

• 5x3x2x2
• 7x6x5
• 5x3x3x2
• 7x5x4

What is the least common multiple (LCM) of 5 and 20?

• 4
• 5
• 20
• 100

Tags

CCSS.4.OA.B.4

What is the least common multiple (LCM) of 2 and 3?

• 6
• 8
• 20
• 10

Tags

CCSS.4.OA.B.4

What is the greatest common factor (GCF) of 4 and 6

• 2

• 3

• 4

• 6