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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 269 · 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. 1.215 − 195 =
  2. 2.1012 − 995 =
  3. 3.1008 − 994 =
  4. 4.74 − 48 =
  5. 5.216 − 179 =
  6. 6.325 − 298 =
  7. 7.209 − 183 =
  8. 8.303 − 290 =
  9. 9.1023 − 998 =
  10. 10.1023 − 987 =
  11. 11.102 − 98 =
  12. 12.501 − 477 =
  13. 13.1020 − 995 =
  14. 14.501 − 481 =
  15. 15.325 − 286 =
  16. 16.527 − 484 =
  17. 17.106 − 94 =
  18. 18.124 − 79 =
  19. 19.1002 − 997 =
  20. 20.324 − 277 =
  21. 21.61 − 36 =
  22. 22.86 − 74 =
  23. 23.502 − 475 =
  24. 24.86 − 60 =
  25. 25.126 − 97 =
  26. 26.102 − 97 =
  27. 27.57 − 40 =
  28. 28.302 − 276 =
  29. 29.71 − 42 =
  30. 30.1013 − 979 =
  31. 31.114 − 75 =
  32. 32.308 − 277 =
  33. 33.55 − 40 =
  34. 34.230 − 184 =
  35. 35.104 − 69 =
  36. 36.222 − 194 =
  37. 37.118 − 95 =
  38. 38.226 − 179 =
  39. 39.1019 − 995 =
  40. 40.223 − 183 =

Answer key

  1. 20
  2. 17
  3. 14
  4. 26
  5. 37
  6. 27
  7. 26
  8. 13
  9. 25
  10. 36
  11. 4
  12. 24
  13. 25
  14. 20
  15. 39
  16. 43
  17. 12
  18. 45
  19. 5
  20. 47
  21. 25
  22. 12
  23. 27
  24. 26
  25. 29
  26. 5
  27. 17
  28. 26
  29. 29
  30. 34
  31. 39
  32. 31
  33. 15
  34. 46
  35. 35
  36. 28
  37. 23
  38. 47
  39. 24
  40. 40

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