math vocabulary

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Across
  1. 7. 415=400+10+5
  2. 8. the number of 3 and 2 in the equation 3x2
  3. 9. the result of subtracting numbers
Down
  1. 1. 4+1=5
  2. 2. hundreds tens and ones
  3. 3. using numbers instead of words
  4. 4. the answer of multiplying two numbers
  5. 5. 47 = fourty-seven
  6. 6. the answer to adding numbers
  7. 9. any of the numbers 0 to 9