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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 354 · 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. 1.74 − 29 =
  2. 2.202 − 193 =
  3. 3.81 − 62 =
  4. 4.509 − 492 =
  5. 5.85 − 61 =
  6. 6.201 − 179 =
  7. 7.204 − 175 =
  8. 8.209 − 187 =
  9. 9.66 − 32 =
  10. 10.129 − 85 =
  11. 11.79 − 33 =
  12. 12.1025 − 994 =
  13. 13.514 − 491 =
  14. 14.319 − 282 =
  15. 15.1029 − 991 =
  16. 16.58 − 33 =
  17. 17.1021 − 978 =
  18. 18.524 − 497 =
  19. 19.501 − 484 =
  20. 20.85 − 76 =
  21. 21.59 − 39 =
  22. 22.201 − 182 =
  23. 23.217 − 186 =
  24. 24.207 − 193 =
  25. 25.1027 − 975 =
  26. 26.208 − 192 =
  27. 27.110 − 73 =
  28. 28.526 − 484 =
  29. 29.52 − 31 =
  30. 30.306 − 287 =
  31. 31.104 − 85 =
  32. 32.118 − 80 =
  33. 33.1028 − 996 =
  34. 34.1024 − 985 =
  35. 35.228 − 175 =
  36. 36.307 − 276 =
  37. 37.527 − 478 =
  38. 38.84 − 64 =
  39. 39.66 − 33 =
  40. 40.1014 − 998 =

Answer key

  1. 45
  2. 9
  3. 19
  4. 17
  5. 24
  6. 22
  7. 29
  8. 22
  9. 34
  10. 44
  11. 46
  12. 31
  13. 23
  14. 37
  15. 38
  16. 25
  17. 43
  18. 27
  19. 17
  20. 9
  21. 20
  22. 19
  23. 31
  24. 14
  25. 52
  26. 16
  27. 37
  28. 42
  29. 21
  30. 19
  31. 19
  32. 38
  33. 32
  34. 39
  35. 53
  36. 31
  37. 49
  38. 20
  39. 33
  40. 16

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