### Strategies for basic addition and subtraction facts

In this video I show several strategies for learning the basic addition and subtraction facts:

Strategies for Addition and Subtraction Facts - Video

- finding all the possible sums for a certain number; e.g. for 6, these would be 0 + 6, 1 + 5, 2 + 4, and 3 + 3;
- writing out all the fact families where the sum is a certain number;
- the 9 "trick"; 9 + 7 is the same as 10 + 6 (9 wants so badly to be 10 so that it "steals" one from 7);
- doubles and the accompanying addition facts;
- number rainbows and how to use them to practice subtraction;
- a structured drill for addition facts.

Strategies for Addition and Subtraction Facts - Video

## Comments

I love number lines as an initial math tool. My kids both learned addition/subtraction at age 3 with them.

http://www.discreteideas.com/2009/08/making-more-math-geeks/

You just multiply the numbers as if there were no decimal points. Lastly, you put the decimal point to the answer. The lesson spells out the rules somewhere in the middle.