Across
- 6. to use place value to exchange equal amounts when renaming a number
- 7. when an answer makes sense
- 8. a number close to the actual value
- 9. Property of Addition states you can change the order of the addends and get the same sum
Down
- 1. Property of Addition states that you can group addends in any way and still get the same sum
- 2. Property of Addition states when you add zero to a number, the sum is that number
- 3. missing number you are solving for in a problem
- 4. tell which numbers to group in a number sentence
- 5. a way of doing math in your head