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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 446 · 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. 1.128 − 87 =
  2. 2.96 − 55 =
  3. 3.94 − 70 =
  4. 4.308 − 291 =
  5. 5.111 − 98 =
  6. 6.102 − 71 =
  7. 7.529 − 493 =
  8. 8.1022 − 986 =
  9. 9.60 − 41 =
  10. 10.107 − 94 =
  11. 11.326 − 278 =
  12. 12.62 − 48 =
  13. 13.53 − 48 =
  14. 14.52 − 32 =
  15. 15.526 − 498 =
  16. 16.86 − 76 =
  17. 17.505 − 492 =
  18. 18.318 − 286 =
  19. 19.104 − 65 =
  20. 20.68 − 32 =
  21. 21.82 − 78 =
  22. 22.320 − 293 =
  23. 23.97 − 57 =
  24. 24.515 − 490 =
  25. 25.109 − 95 =
  26. 26.1008 − 992 =
  27. 27.501 − 482 =
  28. 28.329 − 293 =
  29. 29.67 − 40 =
  30. 30.63 − 33 =
  31. 31.216 − 178 =
  32. 32.103 − 98 =
  33. 33.98 − 73 =
  34. 34.56 − 27 =
  35. 35.313 − 292 =
  36. 36.106 − 76 =
  37. 37.77 − 25 =
  38. 38.98 − 63 =
  39. 39.105 − 95 =
  40. 40.226 − 190 =

Answer key

  1. 41
  2. 41
  3. 24
  4. 17
  5. 13
  6. 31
  7. 36
  8. 36
  9. 19
  10. 13
  11. 48
  12. 14
  13. 5
  14. 20
  15. 28
  16. 10
  17. 13
  18. 32
  19. 39
  20. 36
  21. 4
  22. 27
  23. 40
  24. 25
  25. 14
  26. 16
  27. 19
  28. 36
  29. 27
  30. 30
  31. 38
  32. 5
  33. 25
  34. 29
  35. 21
  36. 30
  37. 52
  38. 35
  39. 10
  40. 36

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