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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 804 · 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. 1.105 − 77 =
  2. 2.106 − 73 =
  3. 3.117 − 86 =
  4. 4.526 − 492 =
  5. 5.506 − 486 =
  6. 6.221 − 187 =
  7. 7.211 − 198 =
  8. 8.1004 − 981 =
  9. 9.74 − 48 =
  10. 10.1016 − 993 =
  11. 11.121 − 83 =
  12. 12.106 − 72 =
  13. 13.303 − 292 =
  14. 14.1001 − 998 =
  15. 15.302 − 288 =
  16. 16.52 − 28 =
  17. 17.106 − 71 =
  18. 18.1025 − 994 =
  19. 19.522 − 493 =
  20. 20.88 − 68 =
  21. 21.302 − 282 =
  22. 22.94 − 65 =
  23. 23.108 − 56 =
  24. 24.66 − 37 =
  25. 25.124 − 80 =
  26. 26.516 − 475 =
  27. 27.83 − 62 =
  28. 28.315 − 277 =
  29. 29.202 − 175 =
  30. 30.224 − 178 =
  31. 31.85 − 70 =
  32. 32.1014 − 991 =
  33. 33.102 − 75 =
  34. 34.519 − 496 =
  35. 35.208 − 179 =
  36. 36.309 − 297 =
  37. 37.76 − 26 =
  38. 38.318 − 293 =
  39. 39.303 − 288 =
  40. 40.117 − 77 =

Answer key

  1. 28
  2. 33
  3. 31
  4. 34
  5. 20
  6. 34
  7. 13
  8. 23
  9. 26
  10. 23
  11. 38
  12. 34
  13. 11
  14. 3
  15. 14
  16. 24
  17. 35
  18. 31
  19. 29
  20. 20
  21. 20
  22. 29
  23. 52
  24. 29
  25. 44
  26. 41
  27. 21
  28. 38
  29. 27
  30. 46
  31. 15
  32. 23
  33. 27
  34. 23
  35. 29
  36. 12
  37. 50
  38. 25
  39. 15
  40. 40

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