Across
- 3. most often
- 5. substitution of a value of the variable into the variable expression
- 8. answer to a subtraction problem
- 10. the sum of zero and any number
- 14. you can add in any order
- 15. when you add, you can group the numbers in any combination
Down
- 1. answer to addition
- 2. repeatedly add
- 4. equal
- 6. putting two numbers together
- 7. multiplying a sum by a number is the same as multiplying each addend
- 9. average
- 11. a part of a whole, represented by division
- 12. the sum of any interger and its additive inverse equals 0
- 13. getting the number to the smallest value