Any primary teacher will tell you that subtraction with exchange, or ‘subtraction with carrying’ as it used to be called, is one of the things that parents ask for help with the most. If it causes you sleepless nights, be assured that you are not the only parent walking the floor over this one.

Here is a step-by-step guide to subtraction with exchange that you and your child will enjoy!

Choose the calculation that you are ready to explore: