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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 638 · 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. 1.56 − 30 =
  2. 2.75 − 43 =
  3. 3.214 − 189 =
  4. 4.84 − 76 =
  5. 5.57 − 39 =
  6. 6.530 − 493 =
  7. 7.108 − 83 =
  8. 8.312 − 294 =
  9. 9.524 − 488 =
  10. 10.89 − 68 =
  11. 11.507 − 496 =
  12. 12.528 − 493 =
  13. 13.302 − 279 =
  14. 14.62 − 46 =
  15. 15.53 − 33 =
  16. 16.522 − 489 =
  17. 17.224 − 175 =
  18. 18.203 − 182 =
  19. 19.73 − 38 =
  20. 20.127 − 80 =
  21. 21.501 − 496 =
  22. 22.325 − 281 =
  23. 23.106 − 78 =
  24. 24.302 − 298 =
  25. 25.226 − 190 =
  26. 26.306 − 279 =
  27. 27.225 − 183 =
  28. 28.85 − 64 =
  29. 29.201 − 187 =
  30. 30.125 − 75 =
  31. 31.89 − 77 =
  32. 32.115 − 96 =
  33. 33.301 − 290 =
  34. 34.104 − 91 =
  35. 35.1009 − 988 =
  36. 36.74 − 34 =
  37. 37.79 − 37 =
  38. 38.1020 − 993 =
  39. 39.110 − 70 =
  40. 40.205 − 194 =

Answer key

  1. 26
  2. 32
  3. 25
  4. 8
  5. 18
  6. 37
  7. 25
  8. 18
  9. 36
  10. 21
  11. 11
  12. 35
  13. 23
  14. 16
  15. 20
  16. 33
  17. 49
  18. 21
  19. 35
  20. 47
  21. 5
  22. 44
  23. 28
  24. 4
  25. 36
  26. 27
  27. 42
  28. 21
  29. 14
  30. 50
  31. 12
  32. 19
  33. 11
  34. 13
  35. 21
  36. 40
  37. 42
  38. 27
  39. 40
  40. 11

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