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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 351 · 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. 1.55 − 35 =
  2. 2.323 − 288 =
  3. 3.126 − 95 =
  4. 4.327 − 287 =
  5. 5.96 − 60 =
  6. 6.214 − 194 =
  7. 7.104 − 80 =
  8. 8.106 − 98 =
  9. 9.103 − 59 =
  10. 10.1002 − 982 =
  11. 11.301 − 284 =
  12. 12.82 − 64 =
  13. 13.71 − 45 =
  14. 14.63 − 30 =
  15. 15.66 − 39 =
  16. 16.93 − 78 =
  17. 17.96 − 56 =
  18. 18.108 − 62 =
  19. 19.93 − 75 =
  20. 20.121 − 85 =
  21. 21.312 − 279 =
  22. 22.105 − 64 =
  23. 23.301 − 298 =
  24. 24.62 − 25 =
  25. 25.1014 − 998 =
  26. 26.1018 − 993 =
  27. 27.504 − 497 =
  28. 28.330 − 294 =
  29. 29.1015 − 994 =
  30. 30.78 − 35 =
  31. 31.76 − 29 =
  32. 32.104 − 89 =
  33. 33.202 − 191 =
  34. 34.1017 − 977 =
  35. 35.84 − 68 =
  36. 36.330 − 298 =
  37. 37.226 − 198 =
  38. 38.86 − 57 =
  39. 39.111 − 76 =
  40. 40.524 − 483 =

Answer key

  1. 20
  2. 35
  3. 31
  4. 40
  5. 36
  6. 20
  7. 24
  8. 8
  9. 44
  10. 20
  11. 17
  12. 18
  13. 26
  14. 33
  15. 27
  16. 15
  17. 40
  18. 46
  19. 18
  20. 36
  21. 33
  22. 41
  23. 3
  24. 37
  25. 16
  26. 25
  27. 7
  28. 36
  29. 21
  30. 43
  31. 47
  32. 15
  33. 11
  34. 40
  35. 16
  36. 32
  37. 28
  38. 29
  39. 35
  40. 41

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