Maths

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Across
  1. 1. SIX - TWO
  2. 4. ONE + TWO
  3. 6. FOUR + ONE
  4. 7. TEN - THREE
  5. 8. ONE + ONE
Down
  1. 2. THREE - TWO
  2. 3. SEVEN + TWO
  3. 4. ELEVEN - ONE
  4. 5. THIRTEEN - FIVE
  5. 7. THREE + THREE