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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 91 · 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. 1.113 − 89 =
  2. 2.130 − 77 =
  3. 3.327 − 290 =
  4. 4.97 − 68 =
  5. 5.503 − 489 =
  6. 6.1026 − 995 =
  7. 7.63 − 47 =
  8. 8.1017 − 979 =
  9. 9.1028 − 997 =
  10. 10.502 − 495 =
  11. 11.1021 − 984 =
  12. 12.124 − 93 =
  13. 13.214 − 194 =
  14. 14.53 − 36 =
  15. 15.106 − 65 =
  16. 16.69 − 46 =
  17. 17.59 − 47 =
  18. 18.1014 − 996 =
  19. 19.109 − 73 =
  20. 20.63 − 40 =
  21. 21.88 − 59 =
  22. 22.109 − 76 =
  23. 23.103 − 76 =
  24. 24.105 − 91 =
  25. 25.107 − 77 =
  26. 26.505 − 493 =
  27. 27.72 − 33 =
  28. 28.125 − 75 =
  29. 29.1028 − 994 =
  30. 30.230 − 194 =
  31. 31.110 − 77 =
  32. 32.55 − 26 =
  33. 33.118 − 76 =
  34. 34.86 − 62 =
  35. 35.108 − 61 =
  36. 36.508 − 484 =
  37. 37.58 − 35 =
  38. 38.330 − 290 =
  39. 39.217 − 189 =
  40. 40.1016 − 992 =

Answer key

  1. 24
  2. 53
  3. 37
  4. 29
  5. 14
  6. 31
  7. 16
  8. 38
  9. 31
  10. 7
  11. 37
  12. 31
  13. 20
  14. 17
  15. 41
  16. 23
  17. 12
  18. 18
  19. 36
  20. 23
  21. 29
  22. 33
  23. 27
  24. 14
  25. 30
  26. 12
  27. 39
  28. 50
  29. 34
  30. 36
  31. 33
  32. 29
  33. 42
  34. 24
  35. 47
  36. 24
  37. 23
  38. 40
  39. 28
  40. 24

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