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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 75 · 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. 1.1010 − 982 =
  2. 2.56 − 48 =
  3. 3.108 − 67 =
  4. 4.504 − 484 =
  5. 5.102 − 89 =
  6. 6.219 − 195 =
  7. 7.61 − 39 =
  8. 8.112 − 83 =
  9. 9.509 − 480 =
  10. 10.103 − 67 =
  11. 11.1003 − 987 =
  12. 12.1024 − 996 =
  13. 13.314 − 288 =
  14. 14.316 − 277 =
  15. 15.105 − 98 =
  16. 16.521 − 497 =
  17. 17.529 − 480 =
  18. 18.130 − 98 =
  19. 19.322 − 297 =
  20. 20.320 − 297 =
  21. 21.100 − 74 =
  22. 22.85 − 62 =
  23. 23.51 − 46 =
  24. 24.1026 − 998 =
  25. 25.121 − 91 =
  26. 26.1004 − 990 =
  27. 27.212 − 188 =
  28. 28.72 − 29 =
  29. 29.218 − 197 =
  30. 30.51 − 41 =
  31. 31.510 − 481 =
  32. 32.87 − 74 =
  33. 33.219 − 194 =
  34. 34.302 − 289 =
  35. 35.68 − 29 =
  36. 36.102 − 75 =
  37. 37.222 − 183 =
  38. 38.122 − 86 =
  39. 39.1019 − 998 =
  40. 40.307 − 292 =

Answer key

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

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