NUMBERS

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Across
  1. 2. What is 0 plus 0?
  2. 3. How much is 20 plus 10?
  3. 6. What is 15 plus 0?
  4. 7. What is the sum of 50 and 40?
Down
  1. 1. What is 20 plus 20?
  2. 4. What is 10 plus 10?
  3. 5. What is the sum of 40 and 30?