Introduction
Sometimes you may need to subtract in your head, not on paper. For example, when you’re at lunch and you want to keep $9 for the movies that night, you may have to quickly subtract numbers to find out how much you can spend on lunch. At other times, you may need a calculator to subtract several numbers – like when you are balancing your checkbook.
This lesson gives you simple tips for subtracting numbers:
- breaking larger numbers into parts
- using a calculator