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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 329 · 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. 1.60 − 26 =
  2. 2.88 − 68 =
  3. 3.105 − 78 =
  4. 4.228 − 196 =
  5. 5.75 − 33 =
  6. 6.103 − 72 =
  7. 7.515 − 497 =
  8. 8.100 − 70 =
  9. 9.1023 − 995 =
  10. 10.104 − 69 =
  11. 11.216 − 177 =
  12. 12.302 − 282 =
  13. 13.87 − 67 =
  14. 14.85 − 77 =
  15. 15.313 − 276 =
  16. 16.229 − 181 =
  17. 17.226 − 190 =
  18. 18.55 − 40 =
  19. 19.52 − 39 =
  20. 20.506 − 482 =
  21. 21.103 − 98 =
  22. 22.1029 − 984 =
  23. 23.517 − 479 =
  24. 24.105 − 57 =
  25. 25.303 − 277 =
  26. 26.74 − 29 =
  27. 27.101 − 61 =
  28. 28.521 − 492 =
  29. 29.117 − 92 =
  30. 30.84 − 62 =
  31. 31.109 − 96 =
  32. 32.307 − 292 =
  33. 33.80 − 40 =
  34. 34.301 − 285 =
  35. 35.1005 − 984 =
  36. 36.60 − 48 =
  37. 37.205 − 190 =
  38. 38.1008 − 978 =
  39. 39.53 − 34 =
  40. 40.1013 − 981 =

Answer key

  1. 34
  2. 20
  3. 27
  4. 32
  5. 42
  6. 31
  7. 18
  8. 30
  9. 28
  10. 35
  11. 39
  12. 20
  13. 20
  14. 8
  15. 37
  16. 48
  17. 36
  18. 15
  19. 13
  20. 24
  21. 5
  22. 45
  23. 38
  24. 48
  25. 26
  26. 45
  27. 40
  28. 29
  29. 25
  30. 22
  31. 13
  32. 15
  33. 40
  34. 16
  35. 21
  36. 12
  37. 15
  38. 30
  39. 19
  40. 32

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