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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 248 · 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. 1.305 − 297 =
  2. 2.211 − 190 =
  3. 3.71 − 48 =
  4. 4.207 − 183 =
  5. 5.97 − 58 =
  6. 6.1010 − 984 =
  7. 7.303 − 275 =
  8. 8.306 − 298 =
  9. 9.57 − 28 =
  10. 10.106 − 69 =
  11. 11.102 − 64 =
  12. 12.128 − 77 =
  13. 13.1011 − 990 =
  14. 14.317 − 295 =
  15. 15.203 − 188 =
  16. 16.216 − 179 =
  17. 17.107 − 78 =
  18. 18.87 − 59 =
  19. 19.214 − 178 =
  20. 20.322 − 285 =
  21. 21.218 − 189 =
  22. 22.51 − 30 =
  23. 23.204 − 197 =
  24. 24.105 − 76 =
  25. 25.1020 − 997 =
  26. 26.515 − 480 =
  27. 27.1003 − 992 =
  28. 28.104 − 87 =
  29. 29.1021 − 995 =
  30. 30.218 − 195 =
  31. 31.210 − 176 =
  32. 32.303 − 280 =
  33. 33.104 − 60 =
  34. 34.74 − 28 =
  35. 35.80 − 34 =
  36. 36.81 − 73 =
  37. 37.1004 − 977 =
  38. 38.107 − 88 =
  39. 39.97 − 73 =
  40. 40.306 − 291 =

Answer key

  1. 8
  2. 21
  3. 23
  4. 24
  5. 39
  6. 26
  7. 28
  8. 8
  9. 29
  10. 37
  11. 38
  12. 51
  13. 21
  14. 22
  15. 15
  16. 37
  17. 29
  18. 28
  19. 36
  20. 37
  21. 29
  22. 21
  23. 7
  24. 29
  25. 23
  26. 35
  27. 11
  28. 17
  29. 26
  30. 23
  31. 34
  32. 23
  33. 44
  34. 46
  35. 46
  36. 8
  37. 27
  38. 19
  39. 24
  40. 15

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