Numbers

12345678
Across
  1. 2. 7+3=10
  2. 4. 2, 4, 6, 8...
  3. 5. +
  4. 7. 1, 3, 5, 7...
  5. 8. 1, 2, 3, 4, 5...
Down
  1. 1. =10
  2. 3. =
  3. 6. 7+3