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7G Math HW#14: Lesson 6.4 and 6.5

Total questions: 15

Worksheet time: 4hrs 45mins

Name
Class
Date
1.

Solve

 (9)(13)\left(-9\right)\left(-13\right)  

a)

-117

b)

117

c)

22

d)

-22

2.

Find the product.

 9   7-9\ \ \cdot\ -7  

a)

-16

b)

63

c)

-63

d)

16

3.

Solve.

 (12)(8)\left(-12\right)\left(8\right)  

a)

-20

b)

20

c)

-96

d)

96

4.

 (27)(12)\left(27\right)\left(-12\right)  

a)

15

b)

-15

c)

324

d)

-324

5.

Solve.

 3913\frac{-39}{-13}  

a)

3

b)

-3

c)

-26

d)

26

6.

 72÷672\div6  

a)

12

b)

-12

c)

66

d)

-66

7.

Find the quotient.

 64÷(8)64\div\left(-8\right)  

a)

56

b)

8

c)

-8

d)

-56

8.

 60÷15-60\div15  

a)

-45

b)

45

c)

4

d)

-4

9.

Evaluate.

 a2ba^2b  
 when a=3 and b =10when\ a=-3\ and\ b\ =-10  

a)

-90

b)

90

c)

-60

d)

60

10.

Solve.

 ab\frac{a}{b}  
 when a = 64  and  b=8when\ a\ =\ 64\ \ and\ \ b=-8  

a)

-8

b)

8

c)

-56

d)

56

11.

 6÷06\div0  

a)

0

b)

6

c)

undefined

d)

-6

12.

 0÷60\div6  

a)

0

b)

6

c)

undefined

d)

-6

13.

Find the mean 


 10,6, 3, 9-10,-6,\ 3,\ 9  

a)

-1

b)

1

c)

4

d)

-4

14.

A hiker is descending 250 feet every 10 minutes. What will be the hiker's change in elevation in one hour?

a)

- 1,500 feet

b)

1,500 feet

c)

-25 feet

d)

25 feet

15.

The amounts of rainfall compared to normal for four months during a drought are -3 cm, -2cm, -4cm, and -7cm. Find the mean of the amounts compared to normal.

a)

-10 cm

b)

10 cm

c)

-4 cm

d)

4 cm