| A | B |
|---|
| Properties | rules to use with numbers |
| Commutative Property | Switch the order of the addends and it will not change the sum |
| Identity Property | Ant number added to 0 equals 0 |
| Identity Example | 5+0=5 or 0+9=9 |
| Commutative Example | 3+2=5 AND 2+3=5 |
| Associative Property | The way thw addends are grouped does NOT change the sum |
| Addends | Numbers you are adding |
| Sum | The answer |
| Associative Example | (3+1)+2=6 BUT 3+(1+2)= 6 too |
| Estimate means | To guess |
| Words like "ABOUT how much" means I should | Estimate |
| Words like "how many" means I should | Add |
| Words like "how many MORE" means should | Subtract |
| Words like "ABOUT how many" means I can | still estimate |
