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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 416 · 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. 1.54 − 38 =
  2. 2.308 − 280 =
  3. 3.82 − 74 =
  4. 4.108 − 57 =
  5. 5.120 − 80 =
  6. 6.501 − 477 =
  7. 7.109 − 79 =
  8. 8.503 − 497 =
  9. 9.106 − 71 =
  10. 10.76 − 44 =
  11. 11.70 − 43 =
  12. 12.68 − 27 =
  13. 13.82 − 65 =
  14. 14.99 − 62 =
  15. 15.57 − 27 =
  16. 16.96 − 72 =
  17. 17.80 − 30 =
  18. 18.1026 − 977 =
  19. 19.217 − 194 =
  20. 20.105 − 98 =
  21. 21.97 − 64 =
  22. 22.115 − 76 =
  23. 23.302 − 289 =
  24. 24.314 − 285 =
  25. 25.1020 − 983 =
  26. 26.502 − 496 =
  27. 27.1024 − 993 =
  28. 28.63 − 30 =
  29. 29.102 − 66 =
  30. 30.93 − 55 =
  31. 31.54 − 31 =
  32. 32.528 − 494 =
  33. 33.1028 − 985 =
  34. 34.120 − 86 =
  35. 35.1004 − 998 =
  36. 36.1029 − 994 =
  37. 37.1027 − 975 =
  38. 38.205 − 179 =
  39. 39.1030 − 994 =
  40. 40.216 − 184 =

Answer key

  1. 16
  2. 28
  3. 8
  4. 51
  5. 40
  6. 24
  7. 30
  8. 6
  9. 35
  10. 32
  11. 27
  12. 41
  13. 17
  14. 37
  15. 30
  16. 24
  17. 50
  18. 49
  19. 23
  20. 7
  21. 33
  22. 39
  23. 13
  24. 29
  25. 37
  26. 6
  27. 31
  28. 33
  29. 36
  30. 38
  31. 23
  32. 34
  33. 43
  34. 34
  35. 6
  36. 35
  37. 52
  38. 26
  39. 36
  40. 32

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