Math Puzzle

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Across
  1. 2. make it smaller
  2. 4. in 6z it is the 6
  3. 6. the number of digits
  4. 9. Division
  5. 11. numbers in the math problem
  6. 12. add
  7. 13. changing
  8. 14. equal
  9. 15. a number says how many times to use the number in a multiplication
Down
  1. 1. how to solve a problem in a(b + c).
  2. 3. multiplication
  3. 5. same
  4. 7. another name for a math problem
  5. 8. never changes
  6. 10. subtract