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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 280 · 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. 1.308 − 282 =
  2. 2.1001 − 990 =
  3. 3.515 − 498 =
  4. 4.108 − 76 =
  5. 5.1001 − 995 =
  6. 6.226 − 194 =
  7. 7.1024 − 977 =
  8. 8.1013 − 990 =
  9. 9.124 − 96 =
  10. 10.227 − 185 =
  11. 11.303 − 280 =
  12. 12.508 − 493 =
  13. 13.312 − 296 =
  14. 14.87 − 74 =
  15. 15.107 − 85 =
  16. 16.319 − 297 =
  17. 17.1021 − 989 =
  18. 18.322 − 275 =
  19. 19.101 − 67 =
  20. 20.1001 − 998 =
  21. 21.515 − 488 =
  22. 22.1027 − 996 =
  23. 23.1001 − 984 =
  24. 24.330 − 292 =
  25. 25.84 − 55 =
  26. 26.97 − 57 =
  27. 27.63 − 28 =
  28. 28.1021 − 995 =
  29. 29.61 − 47 =
  30. 30.1004 − 996 =
  31. 31.57 − 38 =
  32. 32.1017 − 985 =
  33. 33.1028 − 979 =
  34. 34.120 − 90 =
  35. 35.106 − 78 =
  36. 36.1008 − 987 =
  37. 37.306 − 289 =
  38. 38.323 − 281 =
  39. 39.505 − 494 =
  40. 40.308 − 296 =

Answer key

  1. 26
  2. 11
  3. 17
  4. 32
  5. 6
  6. 32
  7. 47
  8. 23
  9. 28
  10. 42
  11. 23
  12. 15
  13. 16
  14. 13
  15. 22
  16. 22
  17. 32
  18. 47
  19. 34
  20. 3
  21. 27
  22. 31
  23. 17
  24. 38
  25. 29
  26. 40
  27. 35
  28. 26
  29. 14
  30. 8
  31. 19
  32. 32
  33. 49
  34. 30
  35. 28
  36. 21
  37. 17
  38. 42
  39. 11
  40. 12

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