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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 495 · 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. 1.52 − 44 =
  2. 2.96 − 65 =
  3. 3.228 − 185 =
  4. 4.95 − 70 =
  5. 5.229 − 188 =
  6. 6.1002 − 995 =
  7. 7.1024 − 998 =
  8. 8.77 − 39 =
  9. 9.213 − 181 =
  10. 10.127 − 82 =
  11. 11.1009 − 997 =
  12. 12.214 − 195 =
  13. 13.325 − 292 =
  14. 14.102 − 81 =
  15. 15.1028 − 988 =
  16. 16.103 − 62 =
  17. 17.313 − 297 =
  18. 18.301 − 277 =
  19. 19.1004 − 998 =
  20. 20.521 − 494 =
  21. 21.91 − 70 =
  22. 22.89 − 55 =
  23. 23.129 − 88 =
  24. 24.317 − 284 =
  25. 25.123 − 98 =
  26. 26.512 − 492 =
  27. 27.67 − 39 =
  28. 28.203 − 190 =
  29. 29.515 − 483 =
  30. 30.103 − 64 =
  31. 31.100 − 65 =
  32. 32.308 − 294 =
  33. 33.54 − 40 =
  34. 34.99 − 72 =
  35. 35.312 − 291 =
  36. 36.51 − 30 =
  37. 37.107 − 60 =
  38. 38.309 − 280 =
  39. 39.217 − 193 =
  40. 40.82 − 61 =

Answer key

  1. 8
  2. 31
  3. 43
  4. 25
  5. 41
  6. 7
  7. 26
  8. 38
  9. 32
  10. 45
  11. 12
  12. 19
  13. 33
  14. 21
  15. 40
  16. 41
  17. 16
  18. 24
  19. 6
  20. 27
  21. 21
  22. 34
  23. 41
  24. 33
  25. 25
  26. 20
  27. 28
  28. 13
  29. 32
  30. 39
  31. 35
  32. 14
  33. 14
  34. 27
  35. 21
  36. 21
  37. 47
  38. 29
  39. 24
  40. 21

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