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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 505 · 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. 1.107 − 68 =
  2. 2.504 − 497 =
  3. 3.100 − 59 =
  4. 4.529 − 488 =
  5. 5.515 − 490 =
  6. 6.99 − 68 =
  7. 7.512 − 484 =
  8. 8.201 − 175 =
  9. 9.509 − 476 =
  10. 10.68 − 46 =
  11. 11.128 − 77 =
  12. 12.52 − 44 =
  13. 13.79 − 34 =
  14. 14.525 − 489 =
  15. 15.73 − 29 =
  16. 16.118 − 86 =
  17. 17.206 − 188 =
  18. 18.87 − 60 =
  19. 19.76 − 45 =
  20. 20.1028 − 990 =
  21. 21.203 − 195 =
  22. 22.505 − 482 =
  23. 23.309 − 288 =
  24. 24.311 − 292 =
  25. 25.59 − 39 =
  26. 26.1002 − 985 =
  27. 27.107 − 83 =
  28. 28.218 − 186 =
  29. 29.79 − 44 =
  30. 30.89 − 61 =
  31. 31.503 − 487 =
  32. 32.1011 − 985 =
  33. 33.74 − 33 =
  34. 34.230 − 185 =
  35. 35.305 − 296 =
  36. 36.215 − 192 =
  37. 37.209 − 176 =
  38. 38.321 − 278 =
  39. 39.1014 − 991 =
  40. 40.85 − 56 =

Answer key

  1. 39
  2. 7
  3. 41
  4. 41
  5. 25
  6. 31
  7. 28
  8. 26
  9. 33
  10. 22
  11. 51
  12. 8
  13. 45
  14. 36
  15. 44
  16. 32
  17. 18
  18. 27
  19. 31
  20. 38
  21. 8
  22. 23
  23. 21
  24. 19
  25. 20
  26. 17
  27. 24
  28. 32
  29. 35
  30. 28
  31. 16
  32. 26
  33. 41
  34. 45
  35. 9
  36. 23
  37. 33
  38. 43
  39. 23
  40. 29

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