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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 839 · 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 − 34 =
  2. 2.106 − 66 =
  3. 3.94 − 70 =
  4. 4.65 − 44 =
  5. 5.222 − 190 =
  6. 6.306 − 276 =
  7. 7.52 − 45 =
  8. 8.509 − 493 =
  9. 9.89 − 72 =
  10. 10.1001 − 977 =
  11. 11.224 − 176 =
  12. 12.308 − 275 =
  13. 13.51 − 25 =
  14. 14.501 − 495 =
  15. 15.89 − 78 =
  16. 16.1027 − 995 =
  17. 17.117 − 76 =
  18. 18.105 − 93 =
  19. 19.314 − 294 =
  20. 20.55 − 48 =
  21. 21.62 − 44 =
  22. 22.111 − 81 =
  23. 23.528 − 496 =
  24. 24.1030 − 996 =
  25. 25.55 − 44 =
  26. 26.113 − 94 =
  27. 27.100 − 77 =
  28. 28.82 − 66 =
  29. 29.202 − 192 =
  30. 30.64 − 39 =
  31. 31.1008 − 996 =
  32. 32.60 − 25 =
  33. 33.220 − 175 =
  34. 34.119 − 81 =
  35. 35.58 − 33 =
  36. 36.1029 − 996 =
  37. 37.108 − 73 =
  38. 38.86 − 62 =
  39. 39.506 − 487 =
  40. 40.99 − 74 =

Answer key

  1. 43
  2. 40
  3. 24
  4. 21
  5. 32
  6. 30
  7. 7
  8. 16
  9. 17
  10. 24
  11. 48
  12. 33
  13. 26
  14. 6
  15. 11
  16. 32
  17. 41
  18. 12
  19. 20
  20. 7
  21. 18
  22. 30
  23. 32
  24. 34
  25. 11
  26. 19
  27. 23
  28. 16
  29. 10
  30. 25
  31. 12
  32. 35
  33. 45
  34. 38
  35. 25
  36. 33
  37. 35
  38. 24
  39. 19
  40. 25

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