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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 245 · 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. 1.114 − 78 =
  2. 2.110 − 75 =
  3. 3.71 − 37 =
  4. 4.515 − 495 =
  5. 5.98 − 64 =
  6. 6.1011 − 998 =
  7. 7.117 − 98 =
  8. 8.65 − 43 =
  9. 9.66 − 38 =
  10. 10.104 − 97 =
  11. 11.115 − 80 =
  12. 12.526 − 494 =
  13. 13.201 − 193 =
  14. 14.525 − 483 =
  15. 15.202 − 194 =
  16. 16.1026 − 976 =
  17. 17.207 − 187 =
  18. 18.201 − 183 =
  19. 19.58 − 45 =
  20. 20.64 − 35 =
  21. 21.130 − 89 =
  22. 22.101 − 97 =
  23. 23.72 − 39 =
  24. 24.78 − 29 =
  25. 25.71 − 42 =
  26. 26.522 − 494 =
  27. 27.122 − 83 =
  28. 28.71 − 26 =
  29. 29.108 − 96 =
  30. 30.508 − 481 =
  31. 31.324 − 278 =
  32. 32.302 − 288 =
  33. 33.514 − 497 =
  34. 34.88 − 71 =
  35. 35.1030 − 994 =
  36. 36.317 − 289 =
  37. 37.110 − 72 =
  38. 38.95 − 60 =
  39. 39.205 − 175 =
  40. 40.98 − 72 =

Answer key

  1. 36
  2. 35
  3. 34
  4. 20
  5. 34
  6. 13
  7. 19
  8. 22
  9. 28
  10. 7
  11. 35
  12. 32
  13. 8
  14. 42
  15. 8
  16. 50
  17. 20
  18. 18
  19. 13
  20. 29
  21. 41
  22. 4
  23. 33
  24. 49
  25. 29
  26. 28
  27. 39
  28. 45
  29. 12
  30. 27
  31. 46
  32. 14
  33. 17
  34. 17
  35. 36
  36. 28
  37. 38
  38. 35
  39. 30
  40. 26

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