Integer Operations (Seventh Grade)

Addition

100

-12 + 5

-7

200

4 + (-2)

2

300

8 + (-1) + (-3)

4

400

-124 + 25 + (-87)

-186

500

97 + (-118) + 0

-21

Subtraction

100

-4 - 3

-7

200

9 - (-2)

11

300

-3 - (-7)

4

400

-17 - ( -56) + 14

53

500

15 - (98) + (-150)

-37

Multiplication

100

7 x (-4)

-28

200

5 (-12)

-60

300

-2 (-5) (-3)

-30

400

-2 (-21) (-5)

-210

500

-12 x 5 x (-3)

180

Division

100

-18 / 6

-3

200

-12 / -4

3

300

48/-12

-4

400

-16 / -8

2

500

Find the mean of the integers

5, -15, 7, -13, 1

-3

Others

100

|-1|

-1

200

|-6| _____ -3

>

300

Order from least to greatest

|-3|, |-5|, -4, 7, |0|

 -4, |0|, |-3|, |-5|, 7

400

Seven days ago, the gas tank on Rosa's car was filled with 20 gallons of gasoline.  Today there are 6 gallons of gasoline.

What integer represents the change of gasoline?

-14

500

The temperature falls from 3 degrees to -4 degrees.  What is the difference in these temperatures?

7 degrees