Addition and subtraction

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Across
  1. 2. 72 - 2...... 70
  2. 5. 20 ... 30 makes 50
  3. 7. 15 ....5 = 10
  4. 9. When taking numbers away , use....
  5. 10. 10 ... 3 = 13
  6. 11. math operation
Down
  1. 1. the total of 7 and 8 .... 15
  2. 2. If I give you 5 apples, now you have ....apples
  3. 3. 2 + 9 + 3 .... 14
  4. 4. noun of add
  5. 6. When I pay the bill, I have ....money
  6. 8. 2 ... 2 equals 4