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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 945 · 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. 1.326 − 294 =
  2. 2.1024 − 975 =
  3. 3.1008 − 985 =
  4. 4.1022 − 981 =
  5. 5.1024 − 989 =
  6. 6.314 − 292 =
  7. 7.1001 − 993 =
  8. 8.512 − 484 =
  9. 9.120 − 93 =
  10. 10.1020 − 992 =
  11. 11.315 − 280 =
  12. 12.218 − 193 =
  13. 13.98 − 62 =
  14. 14.84 − 58 =
  15. 15.325 − 298 =
  16. 16.328 − 298 =
  17. 17.51 − 27 =
  18. 18.77 − 45 =
  19. 19.509 − 482 =
  20. 20.514 − 488 =
  21. 21.108 − 61 =
  22. 22.74 − 45 =
  23. 23.107 − 64 =
  24. 24.318 − 290 =
  25. 25.75 − 43 =
  26. 26.312 − 287 =
  27. 27.523 − 484 =
  28. 28.102 − 59 =
  29. 29.102 − 57 =
  30. 30.307 − 278 =
  31. 31.70 − 42 =
  32. 32.308 − 293 =
  33. 33.92 − 63 =
  34. 34.60 − 45 =
  35. 35.66 − 38 =
  36. 36.51 − 39 =
  37. 37.129 − 91 =
  38. 38.77 − 46 =
  39. 39.106 − 95 =
  40. 40.204 − 193 =

Answer key

  1. 32
  2. 49
  3. 23
  4. 41
  5. 35
  6. 22
  7. 8
  8. 28
  9. 27
  10. 28
  11. 35
  12. 25
  13. 36
  14. 26
  15. 27
  16. 30
  17. 24
  18. 32
  19. 27
  20. 26
  21. 47
  22. 29
  23. 43
  24. 28
  25. 32
  26. 25
  27. 39
  28. 43
  29. 45
  30. 29
  31. 28
  32. 15
  33. 29
  34. 15
  35. 28
  36. 12
  37. 38
  38. 31
  39. 11
  40. 11

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