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January 31, 2015

January 31, 2015

Posted by **jo** on Thursday, September 27, 2007 at 7:52pm.

- 3rd grade Math -
**Writeacher**, Thursday, September 27, 2007 at 8:11pmFact families are trios of numbers that are used for addition and subtraction.

9+8=17

8+9=17

17-9=8

17-8=9

You can do this for just about any set of numbers. Other addends for 17 would be 10 and 7, 15 and 2, etc.

=)

- 3rd grade Math -
**renee**, Tuesday, September 25, 2012 at 5:11pmHow do you exlain how you picked the addends you used

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