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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 920 · 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. 1.93 − 55 =
  2. 2.111 − 92 =
  3. 3.330 − 277 =
  4. 4.1018 − 996 =
  5. 5.1018 − 986 =
  6. 6.218 − 185 =
  7. 7.525 − 495 =
  8. 8.515 − 491 =
  9. 9.1022 − 978 =
  10. 10.119 − 94 =
  11. 11.1023 − 975 =
  12. 12.118 − 80 =
  13. 13.82 − 77 =
  14. 14.87 − 69 =
  15. 15.205 − 176 =
  16. 16.311 − 281 =
  17. 17.208 − 175 =
  18. 18.105 − 98 =
  19. 19.66 − 34 =
  20. 20.219 − 185 =
  21. 21.107 − 66 =
  22. 22.69 − 33 =
  23. 23.64 − 25 =
  24. 24.301 − 293 =
  25. 25.223 − 185 =
  26. 26.518 − 492 =
  27. 27.96 − 77 =
  28. 28.98 − 68 =
  29. 29.54 − 33 =
  30. 30.69 − 32 =
  31. 31.502 − 478 =
  32. 32.323 − 296 =
  33. 33.110 − 97 =
  34. 34.230 − 198 =
  35. 35.506 − 491 =
  36. 36.61 − 25 =
  37. 37.107 − 72 =
  38. 38.86 − 70 =
  39. 39.509 − 493 =
  40. 40.111 − 98 =

Answer key

  1. 38
  2. 19
  3. 53
  4. 22
  5. 32
  6. 33
  7. 30
  8. 24
  9. 44
  10. 25
  11. 48
  12. 38
  13. 5
  14. 18
  15. 29
  16. 30
  17. 33
  18. 7
  19. 32
  20. 34
  21. 41
  22. 36
  23. 39
  24. 8
  25. 38
  26. 26
  27. 19
  28. 30
  29. 21
  30. 37
  31. 24
  32. 27
  33. 13
  34. 32
  35. 15
  36. 36
  37. 35
  38. 16
  39. 16
  40. 13

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