Show:
Adding
Subtracting
Multiplying
Dividing
100

Add the integers 

6+(-4)

2

100

Subtract the integers

117-119

-2

100

Multiply the integers

(-3)·(2)

-6

100

Divide the integers

15 ÷ -3

-5

200

Add the integers

-6 + (-11)

-17

200

Subtract the integers

-5-7

What is -12?

200

Multiply the integers

(3)·(-6) 

-18

200

Divide the integers

-28/7

-4

300

Add the rational numbers. 

-1/5 + -3/5

-4/5

300

Subtract the rational numbers. 

12/4 - (-1/8)

3 1/8

300

(-7)·(-7)

49

300

Divide the integers. 

-54/9

-6
400

Add the rational numbers.

9.2 + (-2.8)

6.4

400

Subtract the rational numbers.

2.86 - 12.1

-9.24

400

(-15)·(-9)

135

400

Divide the integers

125/5

25

500

Add the rational numbers. 

(-1/4) + (-0.67)

-0.92 or -23/25

500

Subtract the rational numbers.

(-1/4)- (-0.67)

0.42 or 

21/50

500

Multiply the integers

2·(-7)·(-1)

14

500

Divide the integers

-3/8

-0.375