Learning Check Review Quiz

Is 5 prime or composite? 

• Prime
• Composite

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 number

Tags

CCSS.4.OA.B.4

All of these are prime except

• 3
• 9
• 2
• 13

Tags

CCSS.4.OA.B.4

A composite number

• has more than 2 factors
• has one factor
• has at least 10 factors
• is always a really big number

Tags

CCSS.4.OA.B.4

Use a number tree to find the prime factorization of 105

• 7x5x3
• 11x5x3
• 7x5x2x1
• 7x5x3x2

Use a number tree to find the prime factorization of 42

• 4x4x3
• 6x7
• 7x3x2
• 5x4x2

What is the prime factorization of 45?

• 3² x 5
• 5 x 5 x 5
• 9 x 5
• 3 x 5

What is the prime factorization of 31?

• 2 x 13
• 2 x 15
• It's Prime
• 1 x 31

Tags

CCSS.4.OA.B.4

What is the prime factorization of 80?

• 2 x 40
• 4 x 10
• 2³ x 5
• 2 x 2 x 5

Tags

CCSS.4.OA.B.4

2³ x 7 is the prime factorization of which number?

• 42
• 56
• 28
• Not Here