Teachers, save “A bit-o-compo!” to assign it to your class.

Subheading: subtracting from tidy numbers is easier than subtracting from scruffy, messy ones. Here is a strategy (compensation) that lets you figure out some interesting subtraction problems – in your head! (No, not by jamming a calculator in there and pressing the buttons by picking your nose – although that would be cool and gross) Use the tool to answer these maths questions! try to use the strategy and have fun!!!