Across
- 3. states that the sum of any number and 0 is that number.
- 5. states that when the grouping of addends is changed, the sum is the same.
Down
- 1. states that you can add 2 or more numbers in any order and get the same sum.
- 2. A number close to an exact amount.
- 4. Numbers that are easy to compute mentally
- 6. A repeating or growing sequence that follows a rule.