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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 842 · 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. 1.77 − 48 =
  2. 2.510 − 486 =
  3. 3.53 − 35 =
  4. 4.81 − 64 =
  5. 5.54 − 35 =
  6. 6.56 − 47 =
  7. 7.523 − 498 =
  8. 8.57 − 36 =
  9. 9.525 − 483 =
  10. 10.225 − 198 =
  11. 11.1001 − 976 =
  12. 12.217 − 183 =
  13. 13.516 − 490 =
  14. 14.513 − 475 =
  15. 15.79 − 25 =
  16. 16.54 − 37 =
  17. 17.105 − 64 =
  18. 18.115 − 92 =
  19. 19.52 − 48 =
  20. 20.106 − 60 =
  21. 21.64 − 41 =
  22. 22.1008 − 987 =
  23. 23.220 − 186 =
  24. 24.218 − 187 =
  25. 25.214 − 175 =
  26. 26.118 − 83 =
  27. 27.501 − 483 =
  28. 28.126 − 93 =
  29. 29.61 − 35 =
  30. 30.308 − 281 =
  31. 31.125 − 89 =
  32. 32.121 − 77 =
  33. 33.58 − 35 =
  34. 34.501 − 496 =
  35. 35.84 − 61 =
  36. 36.64 − 38 =
  37. 37.328 − 288 =
  38. 38.313 − 276 =
  39. 39.1028 − 980 =
  40. 40.107 − 82 =

Answer key

  1. 29
  2. 24
  3. 18
  4. 17
  5. 19
  6. 9
  7. 25
  8. 21
  9. 42
  10. 27
  11. 25
  12. 34
  13. 26
  14. 38
  15. 54
  16. 17
  17. 41
  18. 23
  19. 4
  20. 46
  21. 23
  22. 21
  23. 34
  24. 31
  25. 39
  26. 35
  27. 18
  28. 33
  29. 26
  30. 27
  31. 36
  32. 44
  33. 23
  34. 5
  35. 23
  36. 26
  37. 40
  38. 37
  39. 48
  40. 25

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