Practice

The normal rules of arithmetic are used to determine the sign of the result of integer division:

+num/+div == +result

-num/+div == -result

+num/-div == -result

-num/-div == +result

It is easiest to first calculate the result as if num and div were positive, then apply the above rules. For example:

17/5 == 3

-17/5 == -3

17/-5 == -3

-17/ -2 == 3

Of course, you are eager to practice this right away! Mentally (or with scratch paper) decide on the value of each expression. Then click on the button to see the correct value.

Expression	Result	Expression	Result
12 3		-12 3
-10 5		10 -6
129 100		-19 -10
17 2		-19 2