Show:
Addition
Subtraction
Random
Multiplication
Division
100

3+8

11

100

300-48

252

100

30+2 x 1

32

100

10x2

20

100

50/2

25

200

5+(-3)

2

200

(-4)-(-3)

-1

200

negative times a negative equals a... 

positive

200

(-2)3

-6

200

-15/3

-5

300

-12+4

-8

300

50-(-18)

68

300

-1+1

0
300

-20(50)

-1000

300

-30/-3

10

400

-445+(-56)

-501

400

200-(-82)

282

400

subtracting a negative is like...

adding a positive

400

-3n(5)  n=6

-90

400

-3n/1  n=2

-6

500

-500+30

-470

500

-564(0)

-564