Prime Factorization

A prime number is a number that:

• has one factor

• has more than 2 factors

• has 100 factors

• has ONLY 2 factors: 1 and the itself

Answer explanation

Which number is not a prime number?

• 3

• 9

• 2

• 13

Answer explanation

Use a number tree to find the prime factorization of 18

• 2 x 3 x 3

• 3 x 3 x 3

• 6 x 3

• 9 x 2

Answer explanation

SIMILAR EXAMPLE

Use a number tree to find the prime factorization of 72

• 2 x 2 x 2 x 3 x 3

• 4 x 3 x 3 x 2

• 8 x 9

• 3 x 3 x 4

Answer explanation

SIMILAR EXAMPLE

What is the prime factorization of 8. Select all that apply.

prime factors only.

• 2 x 4

• 2 x 2 x 2

• 2³

• 2⁴

Answer explanation

EXAMPLE

Use a number tree to find the prime factorization of 48

• 2 x 4 x 6

• 2² x 3 x 4

• 2⁴ x 3

• 12 x 4

Answer explanation

Similar EXAMPLE

Find the sum.

 $\frac{1}{4}\ +\ \frac{3}{6}=$  

•  $\frac{9}{12}$  = $\frac{3}{4}$  

•  $\frac{3}{10}$  

•  $\frac{3}{12}$  

• 1

Answer explanation

Similar Example:

5.2 x 4.6

• 23.98

• 23.92

• 2392

• 2398

Answer explanation

Round 2.576 to the nearest hundredth.

• 2.57

• 2.58

• 2.60

• 2.6

Answer explanation

Tags

CCSS.5.NBT.A.4

Subtract.
 $4\ -\ \frac{1}{5}=$  

•  $4\ \frac{1}{5}$  

•  $\frac{1}{5}$  

•  $3\ \frac{4}{5}$  

•  $\frac{4}{5}$  

Answer explanation

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2