# Compliment to 10

Helping with addition and subtraction

1. Know these number compliment. Copy this on sheet paper.

http://www.mathsisfun.com/numbers/tens-complement.html

2. Practice

http://www.classbraingames.com/2009/12/complements-of-ten-an-interactive-math-game/

3. Practice

http://www.abcya.com/drop_sum.htm

4. See how well you know.

http://www.mathsisfun.com/numbers/fix-equation-10.html

Once you know the compliment to ten Adding and Subtracting is that much easier.