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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 293 · 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. 1.1014 − 982 =
  2. 2.308 − 287 =
  3. 3.229 − 180 =
  4. 4.319 − 292 =
  5. 5.504 − 497 =
  6. 6.303 − 288 =
  7. 7.59 − 47 =
  8. 8.120 − 95 =
  9. 9.103 − 74 =
  10. 10.104 − 73 =
  11. 11.104 − 95 =
  12. 12.230 − 183 =
  13. 13.1013 − 983 =
  14. 14.70 − 29 =
  15. 15.306 − 286 =
  16. 16.108 − 73 =
  17. 17.52 − 44 =
  18. 18.97 − 61 =
  19. 19.1014 − 992 =
  20. 20.78 − 35 =
  21. 21.329 − 296 =
  22. 22.1026 − 989 =
  23. 23.209 − 194 =
  24. 24.518 − 483 =
  25. 25.1012 − 993 =
  26. 26.59 − 25 =
  27. 27.86 − 78 =
  28. 28.64 − 41 =
  29. 29.1022 − 979 =
  30. 30.55 − 39 =
  31. 31.53 − 35 =
  32. 32.227 − 191 =
  33. 33.96 − 57 =
  34. 34.118 − 85 =
  35. 35.105 − 86 =
  36. 36.226 − 191 =
  37. 37.103 − 78 =
  38. 38.75 − 27 =
  39. 39.53 − 43 =
  40. 40.501 − 482 =

Answer key

  1. 32
  2. 21
  3. 49
  4. 27
  5. 7
  6. 15
  7. 12
  8. 25
  9. 29
  10. 31
  11. 9
  12. 47
  13. 30
  14. 41
  15. 20
  16. 35
  17. 8
  18. 36
  19. 22
  20. 43
  21. 33
  22. 37
  23. 15
  24. 35
  25. 19
  26. 34
  27. 8
  28. 23
  29. 43
  30. 16
  31. 18
  32. 36
  33. 39
  34. 33
  35. 19
  36. 35
  37. 25
  38. 48
  39. 10
  40. 19

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