Unit 7 Review

In the expression  $56\ -\ 4^2\ \div\left(32-8\right)$  which operation would you solve first?

•  $4^2$  

•  $\left(32-8\right)$  

•  $56\ -\ 4^2$  

Answer explanation

PEMDAS

In the expression  $56\ -\ 4^2\ \div\ 32-8$  which operation would you solve first?

•  $4^2$  

•  $32-8$  

•  $56\ -\ 4^2$  

Answer explanation

PEMDAS

What is the expanded form of  $2^5$  ?

•  $2\ \times\ 5$  

•  $5\ \times\ 5$  

•  $2\times2\times2\times2\times2$  

Answer explanation

The base is the only number being multiplied, while the exponent determines how many times it is multiplied.

Which of the following is equivalent to  $2^5$  ?

• 16

• 32

• 10

Answer explanation

 $2\times2\times2\times2\times2=32$  

 $4^3-2\left(3\times4\right)+10$  

Which of the following is equivalent to the expression?

•  $12-2\left(12\right)+10$  

•  $4^3-2\left(12\right)+10$  

•  $4^3-\left(6\times8\right)+10$  

Answer explanation

Work the operation inside the parentheses first, which would be  $\left(3\times4\right)$  

Which of the following is NOT an equation?

• $3x=12$

• $3x+4=15$

• $3x$

• $y=4x$

Answer explanation

Equations must equal something.

 $20-4^2+10$  

What is the value of the expression?

• 22

• -6

• 14

• 26

 $12-\left(x\cdot7\right)$  

Think about the Properties of Operations (Inverse, Identity, Commutative, Associative, and Distributive) Which of the following is equivalent to the expression?

•  $\left(x\cdot7\right)-12$  

•  $12-\left(7\cdot x\right)$  

•  $\left(12-7\right)\cdot x$  

•  $\left(12\cdot7\right)-x$  

Which property is this example?
5 x 6 = 6 x 5

• Commutative property of multiplication
• Associative Property of multiplication
• Distributive property of multiplication
• Identity property of multiplication

Tags

CCSS.3.OA.B.5

Which property is this example?
3(5+y)=15+3y

• Commutative property of multiplication
• Associative Property of multiplication
• Distributive property of multiplication
• Identity property of multiplication

Tags

CCSS.6.EE.A.3