Download adding by nine worksheets to help learn/teach the basic math facts. Learning to add by nines is easier when you think that it is close to nine. Take one away from the addend (not nine) and give it to the nine to make ten. Then add the two numbers together because adding with ten is easier. For example 9 + 5 would become 10 + 4 and the answer is 14.

## Each download is a PDF that contains one worksheet and answer key.