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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 289 · 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. 1.101 − 77 =
  2. 2.229 − 191 =
  3. 3.71 − 29 =
  4. 4.77 − 31 =
  5. 5.103 − 94 =
  6. 6.515 − 498 =
  7. 7.88 − 67 =
  8. 8.202 − 195 =
  9. 9.329 − 277 =
  10. 10.310 − 294 =
  11. 11.52 − 37 =
  12. 12.103 − 93 =
  13. 13.68 − 29 =
  14. 14.1016 − 991 =
  15. 15.225 − 191 =
  16. 16.520 − 488 =
  17. 17.106 − 90 =
  18. 18.91 − 72 =
  19. 19.83 − 64 =
  20. 20.1019 − 984 =
  21. 21.126 − 76 =
  22. 22.202 − 197 =
  23. 23.301 − 286 =
  24. 24.324 − 296 =
  25. 25.330 − 278 =
  26. 26.1005 − 997 =
  27. 27.1023 − 985 =
  28. 28.122 − 97 =
  29. 29.127 − 94 =
  30. 30.120 − 83 =
  31. 31.107 − 90 =
  32. 32.328 − 287 =
  33. 33.51 − 28 =
  34. 34.518 − 475 =
  35. 35.71 − 31 =
  36. 36.1029 − 982 =
  37. 37.1019 − 998 =
  38. 38.102 − 84 =
  39. 39.323 − 290 =
  40. 40.216 − 185 =

Answer key

  1. 24
  2. 38
  3. 42
  4. 46
  5. 9
  6. 17
  7. 21
  8. 7
  9. 52
  10. 16
  11. 15
  12. 10
  13. 39
  14. 25
  15. 34
  16. 32
  17. 16
  18. 19
  19. 19
  20. 35
  21. 50
  22. 5
  23. 15
  24. 28
  25. 52
  26. 8
  27. 38
  28. 25
  29. 33
  30. 37
  31. 17
  32. 41
  33. 23
  34. 43
  35. 40
  36. 47
  37. 21
  38. 18
  39. 33
  40. 31

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