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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 368 · 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. 1.82 − 60 =
  2. 2.1003 − 989 =
  3. 3.105 − 76 =
  4. 4.301 − 289 =
  5. 5.1009 − 991 =
  6. 6.222 − 188 =
  7. 7.1003 − 980 =
  8. 8.102 − 95 =
  9. 9.216 − 175 =
  10. 10.99 − 75 =
  11. 11.522 − 495 =
  12. 12.96 − 57 =
  13. 13.1001 − 982 =
  14. 14.53 − 47 =
  15. 15.77 − 33 =
  16. 16.107 − 72 =
  17. 17.83 − 56 =
  18. 18.523 − 498 =
  19. 19.501 − 488 =
  20. 20.88 − 64 =
  21. 21.130 − 82 =
  22. 22.54 − 27 =
  23. 23.99 − 77 =
  24. 24.104 − 63 =
  25. 25.125 − 94 =
  26. 26.51 − 43 =
  27. 27.307 − 290 =
  28. 28.501 − 490 =
  29. 29.120 − 94 =
  30. 30.122 − 81 =
  31. 31.210 − 195 =
  32. 32.314 − 276 =
  33. 33.210 − 182 =
  34. 34.221 − 190 =
  35. 35.215 − 192 =
  36. 36.228 − 187 =
  37. 37.113 − 98 =
  38. 38.107 − 94 =
  39. 39.130 − 79 =
  40. 40.1001 − 985 =

Answer key

  1. 22
  2. 14
  3. 29
  4. 12
  5. 18
  6. 34
  7. 23
  8. 7
  9. 41
  10. 24
  11. 27
  12. 39
  13. 19
  14. 6
  15. 44
  16. 35
  17. 27
  18. 25
  19. 13
  20. 24
  21. 48
  22. 27
  23. 22
  24. 41
  25. 31
  26. 8
  27. 17
  28. 11
  29. 26
  30. 41
  31. 15
  32. 38
  33. 28
  34. 31
  35. 23
  36. 41
  37. 15
  38. 13
  39. 51
  40. 16

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