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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 56 · 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. 1.70 − 43 =
  2. 2.502 − 477 =
  3. 3.228 − 193 =
  4. 4.314 − 298 =
  5. 5.1005 − 990 =
  6. 6.1010 − 978 =
  7. 7.70 − 46 =
  8. 8.311 − 298 =
  9. 9.301 − 295 =
  10. 10.523 − 491 =
  11. 11.106 − 98 =
  12. 12.517 − 476 =
  13. 13.70 − 31 =
  14. 14.1019 − 982 =
  15. 15.323 − 297 =
  16. 16.530 − 498 =
  17. 17.222 − 186 =
  18. 18.1011 − 997 =
  19. 19.109 − 79 =
  20. 20.1027 − 998 =
  21. 21.99 − 66 =
  22. 22.52 − 25 =
  23. 23.305 − 295 =
  24. 24.85 − 72 =
  25. 25.319 − 290 =
  26. 26.105 − 86 =
  27. 27.308 − 294 =
  28. 28.528 − 478 =
  29. 29.76 − 32 =
  30. 30.103 − 85 =
  31. 31.228 − 196 =
  32. 32.130 − 80 =
  33. 33.106 − 59 =
  34. 34.94 − 63 =
  35. 35.326 − 289 =
  36. 36.202 − 194 =
  37. 37.213 − 191 =
  38. 38.217 − 198 =
  39. 39.307 − 287 =
  40. 40.1009 − 995 =

Answer key

  1. 27
  2. 25
  3. 35
  4. 16
  5. 15
  6. 32
  7. 24
  8. 13
  9. 6
  10. 32
  11. 8
  12. 41
  13. 39
  14. 37
  15. 26
  16. 32
  17. 36
  18. 14
  19. 30
  20. 29
  21. 33
  22. 27
  23. 10
  24. 13
  25. 29
  26. 19
  27. 14
  28. 50
  29. 44
  30. 18
  31. 32
  32. 50
  33. 47
  34. 31
  35. 37
  36. 8
  37. 22
  38. 19
  39. 20
  40. 14

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