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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 773 · 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. 1.321 − 293 =
  2. 2.1020 − 996 =
  3. 3.113 − 82 =
  4. 4.70 − 36 =
  5. 5.502 − 482 =
  6. 6.108 − 75 =
  7. 7.502 − 494 =
  8. 8.1015 − 993 =
  9. 9.512 − 490 =
  10. 10.57 − 31 =
  11. 11.106 − 76 =
  12. 12.96 − 58 =
  13. 13.79 − 35 =
  14. 14.128 − 77 =
  15. 15.81 − 77 =
  16. 16.1002 − 989 =
  17. 17.306 − 288 =
  18. 18.80 − 44 =
  19. 19.306 − 287 =
  20. 20.323 − 276 =
  21. 21.1021 − 980 =
  22. 22.1008 − 981 =
  23. 23.502 − 491 =
  24. 24.501 − 478 =
  25. 25.120 − 92 =
  26. 26.130 − 88 =
  27. 27.85 − 63 =
  28. 28.106 − 96 =
  29. 29.81 − 78 =
  30. 30.210 − 178 =
  31. 31.215 − 196 =
  32. 32.67 − 27 =
  33. 33.309 − 276 =
  34. 34.503 − 497 =
  35. 35.106 − 94 =
  36. 36.61 − 32 =
  37. 37.81 − 67 =
  38. 38.92 − 61 =
  39. 39.501 − 483 =
  40. 40.79 − 48 =

Answer key

  1. 28
  2. 24
  3. 31
  4. 34
  5. 20
  6. 33
  7. 8
  8. 22
  9. 22
  10. 26
  11. 30
  12. 38
  13. 44
  14. 51
  15. 4
  16. 13
  17. 18
  18. 36
  19. 19
  20. 47
  21. 41
  22. 27
  23. 11
  24. 23
  25. 28
  26. 42
  27. 22
  28. 10
  29. 3
  30. 32
  31. 19
  32. 40
  33. 33
  34. 6
  35. 12
  36. 29
  37. 14
  38. 31
  39. 18
  40. 31

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