Numbers

123456
Across
  1. 2. What is 2 plus 2?
  2. 3. What is the sum of 4 and 3
  3. 6. What is 6 plus 4?
Down
  1. 1. What is 0 plus 0
  2. 2. What is 5 plus 0?
  3. 4. How much is 4 plus 4?
  4. 5. What is the sum of 5 and 4