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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 150 · 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. 1.124 − 83 =
  2. 2.66 − 35 =
  3. 3.1013 − 990 =
  4. 4.116 − 81 =
  5. 5.77 − 42 =
  6. 6.99 − 72 =
  7. 7.212 − 197 =
  8. 8.1017 − 985 =
  9. 9.301 − 296 =
  10. 10.504 − 488 =
  11. 11.66 − 25 =
  12. 12.81 − 78 =
  13. 13.103 − 87 =
  14. 14.57 − 45 =
  15. 15.72 − 38 =
  16. 16.201 − 191 =
  17. 17.1026 − 993 =
  18. 18.323 − 282 =
  19. 19.1006 − 982 =
  20. 20.1030 − 980 =
  21. 21.127 − 91 =
  22. 22.103 − 59 =
  23. 23.128 − 85 =
  24. 24.1026 − 996 =
  25. 25.1029 − 978 =
  26. 26.524 − 487 =
  27. 27.109 − 66 =
  28. 28.227 − 188 =
  29. 29.90 − 55 =
  30. 30.1018 − 985 =
  31. 31.84 − 63 =
  32. 32.203 − 197 =
  33. 33.515 − 495 =
  34. 34.509 − 484 =
  35. 35.120 − 90 =
  36. 36.79 − 25 =
  37. 37.1009 − 990 =
  38. 38.106 − 77 =
  39. 39.312 − 298 =
  40. 40.111 − 86 =

Answer key

  1. 41
  2. 31
  3. 23
  4. 35
  5. 35
  6. 27
  7. 15
  8. 32
  9. 5
  10. 16
  11. 41
  12. 3
  13. 16
  14. 12
  15. 34
  16. 10
  17. 33
  18. 41
  19. 24
  20. 50
  21. 36
  22. 44
  23. 43
  24. 30
  25. 51
  26. 37
  27. 43
  28. 39
  29. 35
  30. 33
  31. 21
  32. 6
  33. 20
  34. 25
  35. 30
  36. 54
  37. 19
  38. 29
  39. 14
  40. 25

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