numbrs by Amebi

123456789
Across
  1. 4. 9+1
  2. 5. 50+40
  3. 6. 80*1
  4. 8. 20+5+4+1
  5. 9. 400/10
Down
  1. 1. 70-20
  2. 2. 50+10
  3. 3. 100-30
  4. 7. 10+9+1