| A | B |
|---|
| Associative Property of Addition | The property that states that you can group addends in different ways and still get the same sum |
| compatible numbers | Numbers that are easy to compute with mentally |
| estimate | To find about how many or how much |
| Pattern | An ordered set of numbers or objects in which the order helps you predict what will come next |
| Commutative Property of Addition | The property that states that you can add two or more numbers in any order and get the same sum |
| difference | The answer to a subtraction problem |
| Identity Property of Addition | The property that states when you add zero to a number, the result is that number |
| round | To replace a number with another number that tells about how many or how much |
