Earth Day and Numbers Crosswords

12345678910
Across
  1. 2. 50 in words is ...
  2. 5. This is the symbol of ...
  3. 6. seven 37 in words is ...
  4. 8. This is ... energy
  5. 9. The Earth also gives us ... trees to enjoy
  6. 10. 30 in words is ...
Down
  1. 1. We can help the Earth by ... a tree
  2. 3. five 45 in words is ...
  3. 4. The Earth gives us ... air to breathe
  4. 7. two Twelve plus twelve equals ...