MATHS

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Across
  1. 2. 8 + 1
  2. 4. 1 + 0
  3. 7. 1 + 1
Down
  1. 1. 5 + 1 + 1
  2. 3. 10 + 0 + 1
  3. 5. 9 - 1
  4. 6. 2 + 1 + 0 + 1