7G Math HW#15: Lesson 6.6 and 6.7

Which property is this

 $\left(15+3\right)+67\ =15+\left(3+67\right)$  

• Associative Property of Addition

• Associative Property of Multiplication

• Commutative Property of Addition

• Commutative Property of Multiplication

Which of property is this

 $17+\left(-17\right)=0$  

• Inverse Property of Multiplication

• Inverse Property of Addition

• Identity Property of Addition

• Identity Property of Mutiplication

Which of property is this

 $9\cdot1=9$  

• Inverse Property of Multiplication

• Inverse Property of Addition

• Identity Property of Addition

• Identity Property of Mutiplication

Solve

 $-35+\left(-52\right)+15$  

• 102

• 72

• -72

• -102

Solve.

 $\frac{1}{2}\times3\times\frac{3}{4}$  

•  $\frac{3}{2}$  

•  $2\frac{1}{4}$  

•  $4\frac{1}{4}$  

•  $1\frac{1}{8}$  

What is the multiplicative inverse of

 $1\frac{1}{3}$  

•  $\frac{4}{1}$  

•  $\frac{3}{1}$  

•  $\frac{4}{3}$  

•  $\frac{3}{4}$  

Solve

 $-5\left(11+3\right)$  

• -70

• 9

• 70

• -9

Solve.

 $-8\left(19-4\right)$  

• -7

• -120

• 7

• -120

You buy four $11 CD's and four $14 CD's. Write two expressions for the total cost. What is the total cost?

• $232

• $33

• $100

• $200

Misha is putting together holiday fruit baskets. Each contains 2 grapefruit, 7 oranges, 4 pears, and 7 apples. How many pieces of fruit are contained in 15 fruit baskets?

• 250

• 150

• 300

• 200