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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 383 · 40 questions
TalentJR

How to do it in your head (Count up): Start at the smaller number. Jump to the next ten, then the next hundred, then to the bigger number. Add up all the jumps.

NameDateTime takenScore ___ / 40
  1. 1.123 − 77 =
  2. 2.510 − 489 =
  3. 3.522 − 476 =
  4. 4.113 − 81 =
  5. 5.56 − 30 =
  6. 6.56 − 46 =
  7. 7.510 − 478 =
  8. 8.92 − 68 =
  9. 9.210 − 178 =
  10. 10.229 − 193 =
  11. 11.510 − 480 =
  12. 12.326 − 283 =
  13. 13.524 − 478 =
  14. 14.303 − 298 =
  15. 15.213 − 193 =
  16. 16.72 − 36 =
  17. 17.507 − 479 =
  18. 18.507 − 495 =
  19. 19.520 − 492 =
  20. 20.1030 − 978 =
  21. 21.52 − 39 =
  22. 22.227 − 176 =
  23. 23.69 − 30 =
  24. 24.54 − 33 =
  25. 25.79 − 40 =
  26. 26.53 − 38 =
  27. 27.220 − 198 =
  28. 28.1027 − 984 =
  29. 29.107 − 96 =
  30. 30.83 − 77 =
  31. 31.99 − 58 =
  32. 32.111 − 75 =
  33. 33.78 − 44 =
  34. 34.208 − 187 =
  35. 35.57 − 34 =
  36. 36.221 − 197 =
  37. 37.310 − 283 =
  38. 38.205 − 196 =
  39. 39.307 − 295 =
  40. 40.118 − 75 =

Answer key

  1. 46
  2. 21
  3. 46
  4. 32
  5. 26
  6. 10
  7. 32
  8. 24
  9. 32
  10. 36
  11. 30
  12. 43
  13. 46
  14. 5
  15. 20
  16. 36
  17. 28
  18. 12
  19. 28
  20. 52
  21. 13
  22. 51
  23. 39
  24. 21
  25. 39
  26. 15
  27. 22
  28. 43
  29. 11
  30. 6
  31. 41
  32. 36
  33. 34
  34. 21
  35. 23
  36. 24
  37. 27
  38. 9
  39. 12
  40. 43

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