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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 641 · 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. 1.323 − 278 =
  2. 2.1026 − 983 =
  3. 3.107 − 78 =
  4. 4.201 − 193 =
  5. 5.97 − 63 =
  6. 6.206 − 184 =
  7. 7.55 − 30 =
  8. 8.1024 − 975 =
  9. 9.511 − 491 =
  10. 10.506 − 496 =
  11. 11.112 − 84 =
  12. 12.514 − 484 =
  13. 13.1013 − 994 =
  14. 14.319 − 292 =
  15. 15.1028 − 979 =
  16. 16.119 − 80 =
  17. 17.514 − 495 =
  18. 18.110 − 58 =
  19. 19.109 − 75 =
  20. 20.313 − 276 =
  21. 21.56 − 36 =
  22. 22.107 − 97 =
  23. 23.306 − 284 =
  24. 24.311 − 292 =
  25. 25.205 − 184 =
  26. 26.84 − 75 =
  27. 27.514 − 489 =
  28. 28.209 − 194 =
  29. 29.126 − 95 =
  30. 30.89 − 58 =
  31. 31.115 − 88 =
  32. 32.526 − 497 =
  33. 33.62 − 41 =
  34. 34.505 − 490 =
  35. 35.69 − 43 =
  36. 36.57 − 46 =
  37. 37.206 − 188 =
  38. 38.97 − 58 =
  39. 39.83 − 78 =
  40. 40.210 − 195 =

Answer key

  1. 45
  2. 43
  3. 29
  4. 8
  5. 34
  6. 22
  7. 25
  8. 49
  9. 20
  10. 10
  11. 28
  12. 30
  13. 19
  14. 27
  15. 49
  16. 39
  17. 19
  18. 52
  19. 34
  20. 37
  21. 20
  22. 10
  23. 22
  24. 19
  25. 21
  26. 9
  27. 25
  28. 15
  29. 31
  30. 31
  31. 27
  32. 29
  33. 21
  34. 15
  35. 26
  36. 11
  37. 18
  38. 39
  39. 5
  40. 15

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