1

Calculation + - x ÷

0 ÷ 0 =        

Total
30

27

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

 

 

1

27   

 

+

-

+-

x

+-x

÷

+-x÷

How Many

5

10

20

30

50