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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 164 · 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. 1.62 − 39 =
  2. 2.101 − 69 =
  3. 3.105 − 97 =
  4. 4.96 − 68 =
  5. 5.64 − 41 =
  6. 6.1009 − 994 =
  7. 7.1005 − 982 =
  8. 8.307 − 298 =
  9. 9.106 − 81 =
  10. 10.106 − 88 =
  11. 11.74 − 33 =
  12. 12.126 − 97 =
  13. 13.108 − 60 =
  14. 14.308 − 283 =
  15. 15.316 − 283 =
  16. 16.88 − 61 =
  17. 17.60 − 44 =
  18. 18.123 − 88 =
  19. 19.329 − 290 =
  20. 20.126 − 90 =
  21. 21.59 − 30 =
  22. 22.67 − 46 =
  23. 23.76 − 36 =
  24. 24.324 − 296 =
  25. 25.307 − 275 =
  26. 26.125 − 79 =
  27. 27.1012 − 987 =
  28. 28.119 − 78 =
  29. 29.513 − 487 =
  30. 30.205 − 179 =
  31. 31.82 − 70 =
  32. 32.304 − 293 =
  33. 33.82 − 74 =
  34. 34.59 − 46 =
  35. 35.202 − 193 =
  36. 36.203 − 192 =
  37. 37.509 − 493 =
  38. 38.310 − 297 =
  39. 39.311 − 292 =
  40. 40.72 − 47 =

Answer key

  1. 23
  2. 32
  3. 8
  4. 28
  5. 23
  6. 15
  7. 23
  8. 9
  9. 25
  10. 18
  11. 41
  12. 29
  13. 48
  14. 25
  15. 33
  16. 27
  17. 16
  18. 35
  19. 39
  20. 36
  21. 29
  22. 21
  23. 40
  24. 28
  25. 32
  26. 46
  27. 25
  28. 41
  29. 26
  30. 26
  31. 12
  32. 11
  33. 8
  34. 13
  35. 9
  36. 11
  37. 16
  38. 13
  39. 19
  40. 25

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