Addition, Subtraction, Multiplication and Division

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Across
  1. 1. The whole amount
  2. 3. Repeated addition
  3. 5. A single number from 0 to 9
  4. 9. The symbol "=" means this
  5. 13. The answer when you multiply
  6. 14. The opposite of plus
  7. 15. Splitting into equal parts
Down
  1. 2. Another word for "in total"
  2. 4. Putting numbers together to find the total
  3. 6. The "+" sign means this
  4. 7. A vertical line of numbers
  5. 8. The answer when you add numbers
  6. 10. A smaller amount
  7. 11. To combine equal groups
  8. 12. What is left after division