CREDIT: WRITEACHER WRITTEN IN 2007
Fact 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.
=)
write a fact family with a sum of 17 . Explain how you picked the addends
1 answer