Adding, Subtracting, Multiplying, and Dividing Integers

Addition

100

-5+8

What is 3

200

4+(-4)

What is 0

300

-15+12

What is (-3)

400

-16+7

What is -9

500

-3+10

What is 7

Subtraction

100

300-250

What is 50

200

5-9

What is -4

300

-22-11

What is -33

400

18-22

What is -4

500

-8-10

What is -18

Multiplication

100

8*8

What is 64

200

-9*12

What is -108

300

-1*-7

What is 7

400

15*-2

What is -30

500

-8*-6

What is 48

Addition and Subtracting

100

90+32

What is 122

200

98-65

What is 33

300

40-(-57)

What is 97

400

-98+50

What is -48

500

-57+76+-64

What is -45

Word Problems

100

Joe said -75+54 was 129.Is he wrong, and if so then explain his error and say the real answer to the problem.

What is yes, because he added 75+54 instead of -75+54, which is -21

200

Joe was 2,000 feet above sea level. His friend Bob was 1,568 feet below sea level. Joe wanted to know what the distance was between thew. What was it?

What is 3,568

300

Billy said -19+26 is 7. Is he wrong, and if so explain his error and right the right answer.

What is no

400

Harry was plying football.He started at twenty yards. He got the ball, but lost ten yards. The next play he gained fifteen, and the next play he lost five. What yard is he at now?

What is 20

500

Sally says -12*-12*-5 is -720, but Sarah says -12*-12*-5 is 720. Who's right? Explain.

What is -720, because -12*-12 is 144, since two likes equal a positive, times five is is 720, since differences equal a negative.