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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 834 · 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. 1.74 − 36 =
  2. 2.120 − 93 =
  3. 3.309 − 298 =
  4. 4.73 − 32 =
  5. 5.51 − 44 =
  6. 6.518 − 487 =
  7. 7.122 − 78 =
  8. 8.521 − 495 =
  9. 9.55 − 44 =
  10. 10.529 − 488 =
  11. 11.309 − 291 =
  12. 12.107 − 68 =
  13. 13.104 − 96 =
  14. 14.502 − 492 =
  15. 15.87 − 61 =
  16. 16.223 − 188 =
  17. 17.316 − 295 =
  18. 18.57 − 25 =
  19. 19.314 − 276 =
  20. 20.107 − 74 =
  21. 21.87 − 72 =
  22. 22.102 − 68 =
  23. 23.530 − 497 =
  24. 24.521 − 493 =
  25. 25.99 − 71 =
  26. 26.227 − 198 =
  27. 27.209 − 190 =
  28. 28.518 − 485 =
  29. 29.78 − 44 =
  30. 30.56 − 37 =
  31. 31.92 − 73 =
  32. 32.526 − 485 =
  33. 33.68 − 40 =
  34. 34.212 − 181 =
  35. 35.121 − 86 =
  36. 36.311 − 296 =
  37. 37.511 − 489 =
  38. 38.108 − 95 =
  39. 39.318 − 278 =
  40. 40.75 − 26 =

Answer key

  1. 38
  2. 27
  3. 11
  4. 41
  5. 7
  6. 31
  7. 44
  8. 26
  9. 11
  10. 41
  11. 18
  12. 39
  13. 8
  14. 10
  15. 26
  16. 35
  17. 21
  18. 32
  19. 38
  20. 33
  21. 15
  22. 34
  23. 33
  24. 28
  25. 28
  26. 29
  27. 19
  28. 33
  29. 34
  30. 19
  31. 19
  32. 41
  33. 28
  34. 31
  35. 35
  36. 15
  37. 22
  38. 13
  39. 40
  40. 49

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