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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 758 · 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. 1.1011 − 985 =
  2. 2.57 − 38 =
  3. 3.328 − 293 =
  4. 4.82 − 72 =
  5. 5.1001 − 985 =
  6. 6.301 − 298 =
  7. 7.93 − 59 =
  8. 8.80 − 26 =
  9. 9.120 − 87 =
  10. 10.1018 − 997 =
  11. 11.51 − 27 =
  12. 12.78 − 36 =
  13. 13.520 − 480 =
  14. 14.108 − 59 =
  15. 15.1011 − 987 =
  16. 16.70 − 37 =
  17. 17.66 − 29 =
  18. 18.110 − 56 =
  19. 19.528 − 490 =
  20. 20.309 − 277 =
  21. 21.113 − 95 =
  22. 22.505 − 476 =
  23. 23.224 − 197 =
  24. 24.222 − 181 =
  25. 25.215 − 186 =
  26. 26.65 − 26 =
  27. 27.517 − 493 =
  28. 28.523 − 493 =
  29. 29.1016 − 985 =
  30. 30.1004 − 994 =
  31. 31.304 − 277 =
  32. 32.217 − 195 =
  33. 33.302 − 294 =
  34. 34.60 − 27 =
  35. 35.102 − 59 =
  36. 36.83 − 60 =
  37. 37.221 − 194 =
  38. 38.1021 − 997 =
  39. 39.65 − 48 =
  40. 40.108 − 74 =

Answer key

  1. 26
  2. 19
  3. 35
  4. 10
  5. 16
  6. 3
  7. 34
  8. 54
  9. 33
  10. 21
  11. 24
  12. 42
  13. 40
  14. 49
  15. 24
  16. 33
  17. 37
  18. 54
  19. 38
  20. 32
  21. 18
  22. 29
  23. 27
  24. 41
  25. 29
  26. 39
  27. 24
  28. 30
  29. 31
  30. 10
  31. 27
  32. 22
  33. 8
  34. 33
  35. 43
  36. 23
  37. 27
  38. 24
  39. 17
  40. 34

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