Mathematics

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Across
  1. 1. 7+1=
  2. 3. 24-12=
  3. 4. 5+5=
  4. 5. 1+1+1+1=
  5. 6. 10-9=
  6. 7. 4+3=
  7. 8. 3+3+3=
Down
  1. 1. 33-22=
  2. 2. 5-3=
  3. 3. 3+0=
  4. 5. 11-6=
  5. 7. 2+4=