Math Review Grade 7

Multiply  $6\ \cdot\ 10^3$  

• 600

• 60

• 6000

Multiply  $22\cdot\ 10^1$  

• 2200

• 220

• 22000

Write the number in Scientific Notation
34,000

•  $3.4\ \times\ 10^3$  

•  $3\cdot4\ \times10^4\$  

•  

   $3.4\ \times10^5$ 

   

Write the number in Scientific Notation
7,700

•  $7.7\ \times\ 10^3$  

•  $7.7\ \times10^4$  

•  

   $77\times10^5$  

Simplify the expression 15  $\cdot$ 3 + 12 $\cdot$ 2

• 24

• 45

• 69

Simplify the expression 100 - $9^2$  + 2

• 183

• 21

• 900

Which property is represented here?

12 . 14 = 14 . 12

• Commutative Property

• Associative Property

• Identity Property

Tell which property is represented here

(17 + 36) + 4 = 17 + (36 + 4)

• Commutative Property

• Associative Property

• Identity Property

Evaluate n - 5 for the value of n = 121

• 605

• 103

• 116

Evaluate n - 5 for the value of n = 8

• 3

• 13

• 5