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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 461 · 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. 1.126 − 75 =
  2. 2.104 − 61 =
  3. 3.1005 − 984 =
  4. 4.83 − 75 =
  5. 5.205 − 186 =
  6. 6.86 − 57 =
  7. 7.1015 − 982 =
  8. 8.1007 − 979 =
  9. 9.111 − 76 =
  10. 10.106 − 75 =
  11. 11.1007 − 980 =
  12. 12.103 − 78 =
  13. 13.65 − 28 =
  14. 14.308 − 277 =
  15. 15.93 − 61 =
  16. 16.223 − 177 =
  17. 17.218 − 198 =
  18. 18.204 − 181 =
  19. 19.515 − 498 =
  20. 20.87 − 76 =
  21. 21.107 − 69 =
  22. 22.221 − 179 =
  23. 23.104 − 75 =
  24. 24.106 − 68 =
  25. 25.52 − 32 =
  26. 26.75 − 34 =
  27. 27.1007 − 984 =
  28. 28.66 − 35 =
  29. 29.214 − 180 =
  30. 30.327 − 297 =
  31. 31.93 − 62 =
  32. 32.52 − 40 =
  33. 33.326 − 296 =
  34. 34.1011 − 989 =
  35. 35.82 − 60 =
  36. 36.83 − 76 =
  37. 37.525 − 485 =
  38. 38.209 − 193 =
  39. 39.303 − 287 =
  40. 40.73 − 33 =

Answer key

  1. 51
  2. 43
  3. 21
  4. 8
  5. 19
  6. 29
  7. 33
  8. 28
  9. 35
  10. 31
  11. 27
  12. 25
  13. 37
  14. 31
  15. 32
  16. 46
  17. 20
  18. 23
  19. 17
  20. 11
  21. 38
  22. 42
  23. 29
  24. 38
  25. 20
  26. 41
  27. 23
  28. 31
  29. 34
  30. 30
  31. 31
  32. 12
  33. 30
  34. 22
  35. 22
  36. 7
  37. 40
  38. 16
  39. 16
  40. 40

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