← Maths

Addition and subtraction

Columns up to 4 digits; estimating; inverse checking; two-step problems.

  1. Column addition - 4 digits, no exchange▶ up next
  2. Column addition - one exchange
  3. Column addition - several exchanges
  4. Column subtraction - 4 digits, no exchange
  5. Column subtraction - one exchange
  6. Column subtraction - several exchanges
  7. Exchange across zeros
  8. Estimate to check
  9. Inverse detectives
  10. Mental methods - big numbers
  11. Add near multiples
  12. Missing 4-digit numbers
  13. Complements to 1000
  14. One-step problems
  15. Two-step problems
  16. Money problems
  17. Measure problems
  18. Which operation?
  19. Check it three ways
  20. Add and subtract mixed practice
  21. Boss Tree challenge!8 questions · +30 coins