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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 490 · 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. 1.309 − 287 =
  2. 2.103 − 72 =
  3. 3.93 − 62 =
  4. 4.330 − 292 =
  5. 5.501 − 497 =
  6. 6.91 − 68 =
  7. 7.103 − 68 =
  8. 8.530 − 480 =
  9. 9.501 − 496 =
  10. 10.129 − 96 =
  11. 11.1011 − 982 =
  12. 12.85 − 60 =
  13. 13.218 − 194 =
  14. 14.1014 − 995 =
  15. 15.512 − 498 =
  16. 16.106 − 56 =
  17. 17.314 − 287 =
  18. 18.521 − 479 =
  19. 19.315 − 275 =
  20. 20.76 − 47 =
  21. 21.120 − 83 =
  22. 22.1005 − 998 =
  23. 23.109 − 89 =
  24. 24.324 − 292 =
  25. 25.76 − 36 =
  26. 26.88 − 62 =
  27. 27.73 − 37 =
  28. 28.524 − 488 =
  29. 29.128 − 87 =
  30. 30.327 − 285 =
  31. 31.58 − 44 =
  32. 32.1012 − 977 =
  33. 33.108 − 87 =
  34. 34.62 − 34 =
  35. 35.90 − 71 =
  36. 36.213 − 187 =
  37. 37.56 − 42 =
  38. 38.222 − 189 =
  39. 39.1026 − 998 =
  40. 40.110 − 78 =

Answer key

  1. 22
  2. 31
  3. 31
  4. 38
  5. 4
  6. 23
  7. 35
  8. 50
  9. 5
  10. 33
  11. 29
  12. 25
  13. 24
  14. 19
  15. 14
  16. 50
  17. 27
  18. 42
  19. 40
  20. 29
  21. 37
  22. 7
  23. 20
  24. 32
  25. 40
  26. 26
  27. 36
  28. 36
  29. 41
  30. 42
  31. 14
  32. 35
  33. 21
  34. 28
  35. 19
  36. 26
  37. 14
  38. 33
  39. 28
  40. 32

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