Subtraction is when you take away a number or an amount from another number or amount to work out what is left. There are different things you can use to help you subtract. You can use number lines, ...

Subtraction is taking away one number from another. Lilly has 4 balloons, but then one flys away. How many does she have left? You can use subtraction to find the answer. First there were 4 balloons.

The National Council of Teachers of Mathematics is a public voice of mathematics education, providing vision, leadership, and professional development to support teachers in ensuring mathematics ...

People tend to add rather than subtract in all types of situations, even when solving problems. In some cases, however, it's better to deduct. Your health choices may affect your work, relationships, ...