My math crossword

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Across
  1. 1. the sum of 1 and 2 is 3
  2. 3. 3*4=12 the 12 is the product
  3. 4. from 8-2=6, 6is the difference
  4. 5. from 4/2, 2 is the subtrahend
  5. 7. from 2-1=1 ,2is the minuend
Down
  1. 2. from 3*4, 3and 4is the multiplication
  2. 6. 1 addend 3 is 4