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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 285 · 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. 1.211 − 192 =
  2. 2.130 − 77 =
  3. 3.1004 − 997 =
  4. 4.501 − 496 =
  5. 5.222 − 178 =
  6. 6.113 − 80 =
  7. 7.1001 − 990 =
  8. 8.215 − 188 =
  9. 9.103 − 57 =
  10. 10.1018 − 995 =
  11. 11.68 − 39 =
  12. 12.302 − 285 =
  13. 13.309 − 277 =
  14. 14.1003 − 989 =
  15. 15.523 − 493 =
  16. 16.86 − 68 =
  17. 17.329 − 296 =
  18. 18.116 − 83 =
  19. 19.306 − 277 =
  20. 20.70 − 27 =
  21. 21.1015 − 991 =
  22. 22.62 − 42 =
  23. 23.501 − 495 =
  24. 24.322 − 282 =
  25. 25.51 − 31 =
  26. 26.525 − 481 =
  27. 27.1006 − 998 =
  28. 28.319 − 292 =
  29. 29.1026 − 975 =
  30. 30.90 − 76 =
  31. 31.1005 − 994 =
  32. 32.210 − 175 =
  33. 33.55 − 31 =
  34. 34.109 − 86 =
  35. 35.206 − 180 =
  36. 36.1007 − 993 =
  37. 37.320 − 291 =
  38. 38.129 − 75 =
  39. 39.325 − 288 =
  40. 40.80 − 31 =

Answer key

  1. 19
  2. 53
  3. 7
  4. 5
  5. 44
  6. 33
  7. 11
  8. 27
  9. 46
  10. 23
  11. 29
  12. 17
  13. 32
  14. 14
  15. 30
  16. 18
  17. 33
  18. 33
  19. 29
  20. 43
  21. 24
  22. 20
  23. 6
  24. 40
  25. 20
  26. 44
  27. 8
  28. 27
  29. 51
  30. 14
  31. 11
  32. 35
  33. 24
  34. 23
  35. 26
  36. 14
  37. 29
  38. 54
  39. 37
  40. 49

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