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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 451 · 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. 1.516 − 492 =
  2. 2.121 − 83 =
  3. 3.1025 − 980 =
  4. 4.54 − 25 =
  5. 5.202 − 177 =
  6. 6.1008 − 995 =
  7. 7.1001 − 981 =
  8. 8.305 − 279 =
  9. 9.208 − 180 =
  10. 10.322 − 296 =
  11. 11.102 − 98 =
  12. 12.54 − 34 =
  13. 13.67 − 29 =
  14. 14.326 − 289 =
  15. 15.89 − 76 =
  16. 16.526 − 497 =
  17. 17.94 − 66 =
  18. 18.301 − 279 =
  19. 19.314 − 292 =
  20. 20.1007 − 997 =
  21. 21.1009 − 987 =
  22. 22.212 − 188 =
  23. 23.224 − 186 =
  24. 24.106 − 97 =
  25. 25.306 − 291 =
  26. 26.212 − 194 =
  27. 27.73 − 29 =
  28. 28.98 − 76 =
  29. 29.304 − 295 =
  30. 30.302 − 275 =
  31. 31.525 − 480 =
  32. 32.101 − 82 =
  33. 33.320 − 294 =
  34. 34.57 − 47 =
  35. 35.205 − 175 =
  36. 36.83 − 63 =
  37. 37.74 − 46 =
  38. 38.308 − 296 =
  39. 39.88 − 57 =
  40. 40.226 − 194 =

Answer key

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

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