Chapter 1 Math: Lesson 1.1 & 1.3

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 factor tree to find the prime factorization of 32

• 2x2x2x4

• 2x2x2x2x2

• 4x4x2

• 2x2x2x2x1

Tags

CCSS.4.OA.B.4

Use a number tree to find the prime factorization of 48

• 4x2x6
• 4x2²x3
• 3x2⁴
• 12x4

Tags

CCSS.4.OA.B.4

What is a factor?

• Two numbers that create a quotient.

• Two numbers that create a product.

• Two numbers that create a sum.

• Two numbers that create a difference.

Tags

CCSS.4.OA.B.4

What is the quotient?
188 ÷ 4

• 4
• 48
• 47
• 470

Tags

CCSS.4.NBT.B.6

What is 2637 divided by 18?

• 146
• 152
• 67
• 231

Tags

CCSS.6.NS.B.2

CCSS.5.NBT.B.6

372÷3

• 156
• 124
• 3

Tags

CCSS.4.NBT.B.6

What is the LCM of 2 and 14?

• 28

• 7

• 14

• 2

Which number is prime?

• 15

• 21

• 5

• 12

Composite numbers:

• Are always bigger than prime numbers
• Have more than 2 factors
• Have 2 pairs of factors
• Don't have factors