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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 706 · 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. 1.117 − 90 =
  2. 2.308 − 292 =
  3. 3.52 − 28 =
  4. 4.110 − 91 =
  5. 5.54 − 36 =
  6. 6.1019 − 979 =
  7. 7.516 − 490 =
  8. 8.1013 − 979 =
  9. 9.319 − 290 =
  10. 10.108 − 58 =
  11. 11.101 − 84 =
  12. 12.322 − 289 =
  13. 13.507 − 498 =
  14. 14.96 − 62 =
  15. 15.1018 − 988 =
  16. 16.330 − 281 =
  17. 17.120 − 93 =
  18. 18.504 − 494 =
  19. 19.502 − 492 =
  20. 20.518 − 477 =
  21. 21.307 − 285 =
  22. 22.1023 − 978 =
  23. 23.312 − 291 =
  24. 24.304 − 277 =
  25. 25.312 − 281 =
  26. 26.504 − 497 =
  27. 27.1012 − 995 =
  28. 28.209 − 188 =
  29. 29.113 − 96 =
  30. 30.224 − 186 =
  31. 31.320 − 281 =
  32. 32.86 − 67 =
  33. 33.529 − 491 =
  34. 34.91 − 77 =
  35. 35.106 − 80 =
  36. 36.1007 − 995 =
  37. 37.506 − 479 =
  38. 38.1017 − 981 =
  39. 39.67 − 40 =
  40. 40.524 − 483 =

Answer key

  1. 27
  2. 16
  3. 24
  4. 19
  5. 18
  6. 40
  7. 26
  8. 34
  9. 29
  10. 50
  11. 17
  12. 33
  13. 9
  14. 34
  15. 30
  16. 49
  17. 27
  18. 10
  19. 10
  20. 41
  21. 22
  22. 45
  23. 21
  24. 27
  25. 31
  26. 7
  27. 17
  28. 21
  29. 17
  30. 38
  31. 39
  32. 19
  33. 38
  34. 14
  35. 26
  36. 12
  37. 27
  38. 36
  39. 27
  40. 41

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