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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 672 · 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. 1.1029 − 978 =
  2. 2.129 − 86 =
  3. 3.70 − 36 =
  4. 4.99 − 75 =
  5. 5.323 − 277 =
  6. 6.87 − 59 =
  7. 7.108 − 87 =
  8. 8.74 − 38 =
  9. 9.1004 − 984 =
  10. 10.105 − 82 =
  11. 11.305 − 281 =
  12. 12.72 − 45 =
  13. 13.81 − 76 =
  14. 14.326 − 293 =
  15. 15.87 − 61 =
  16. 16.1014 − 984 =
  17. 17.1012 − 997 =
  18. 18.301 − 278 =
  19. 19.309 − 289 =
  20. 20.322 − 289 =
  21. 21.1004 − 985 =
  22. 22.204 − 177 =
  23. 23.528 − 491 =
  24. 24.67 − 30 =
  25. 25.522 − 486 =
  26. 26.113 − 82 =
  27. 27.63 − 43 =
  28. 28.1010 − 997 =
  29. 29.60 − 48 =
  30. 30.229 − 196 =
  31. 31.502 − 481 =
  32. 32.93 − 77 =
  33. 33.516 − 488 =
  34. 34.94 − 67 =
  35. 35.101 − 77 =
  36. 36.510 − 483 =
  37. 37.214 − 193 =
  38. 38.512 − 487 =
  39. 39.311 − 289 =
  40. 40.113 − 91 =

Answer key

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

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