Across
- 5. the value of each digit and then added
- 7. rounding to a reasonable value close to the answer
- 8. when bundling 10 units into 1 unit
- 9. the numbers that are added together
- 10. sums are the same no matter how the numbers are "flipped"
Down
- 1. the sum of the addend and zero
- 2. represents jumps on a straight line
- 3. the sum will be the same no matter how the addends are grouped
- 4. mathematical statement that has expressions and an equal sign
- 6. the answer when you are adding