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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 235 · 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. 1.51 − 40 =
  2. 2.502 − 475 =
  3. 3.317 − 291 =
  4. 4.320 − 293 =
  5. 5.1005 − 986 =
  6. 6.222 − 184 =
  7. 7.63 − 34 =
  8. 8.202 − 195 =
  9. 9.116 − 94 =
  10. 10.59 − 28 =
  11. 11.329 − 294 =
  12. 12.1007 − 987 =
  13. 13.209 − 186 =
  14. 14.114 − 86 =
  15. 15.57 − 45 =
  16. 16.213 − 179 =
  17. 17.126 − 92 =
  18. 18.57 − 28 =
  19. 19.218 − 187 =
  20. 20.330 − 282 =
  21. 21.98 − 72 =
  22. 22.1006 − 993 =
  23. 23.507 − 485 =
  24. 24.222 − 180 =
  25. 25.225 − 193 =
  26. 26.329 − 295 =
  27. 27.207 − 185 =
  28. 28.88 − 73 =
  29. 29.97 − 77 =
  30. 30.523 − 484 =
  31. 31.126 − 94 =
  32. 32.525 − 494 =
  33. 33.1019 − 996 =
  34. 34.86 − 75 =
  35. 35.109 − 90 =
  36. 36.60 − 39 =
  37. 37.1022 − 976 =
  38. 38.1013 − 997 =
  39. 39.106 − 92 =
  40. 40.227 − 179 =

Answer key

  1. 11
  2. 27
  3. 26
  4. 27
  5. 19
  6. 38
  7. 29
  8. 7
  9. 22
  10. 31
  11. 35
  12. 20
  13. 23
  14. 28
  15. 12
  16. 34
  17. 34
  18. 29
  19. 31
  20. 48
  21. 26
  22. 13
  23. 22
  24. 42
  25. 32
  26. 34
  27. 22
  28. 15
  29. 20
  30. 39
  31. 32
  32. 31
  33. 23
  34. 11
  35. 19
  36. 21
  37. 46
  38. 16
  39. 14
  40. 48

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