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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 752 · 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 − 284 =
  2. 2.125 − 90 =
  3. 3.106 − 92 =
  4. 4.1008 − 992 =
  5. 5.91 − 62 =
  6. 6.1017 − 979 =
  7. 7.214 − 193 =
  8. 8.108 − 60 =
  9. 9.82 − 59 =
  10. 10.522 − 483 =
  11. 11.90 − 72 =
  12. 12.101 − 97 =
  13. 13.524 − 498 =
  14. 14.1001 − 991 =
  15. 15.204 − 178 =
  16. 16.521 − 492 =
  17. 17.520 − 479 =
  18. 18.303 − 285 =
  19. 19.517 − 488 =
  20. 20.119 − 87 =
  21. 21.327 − 284 =
  22. 22.55 − 44 =
  23. 23.67 − 32 =
  24. 24.1027 − 995 =
  25. 25.79 − 43 =
  26. 26.52 − 28 =
  27. 27.121 − 87 =
  28. 28.1006 − 993 =
  29. 29.125 − 82 =
  30. 30.117 − 82 =
  31. 31.129 − 96 =
  32. 32.505 − 489 =
  33. 33.57 − 32 =
  34. 34.213 − 190 =
  35. 35.96 − 69 =
  36. 36.203 − 193 =
  37. 37.102 − 77 =
  38. 38.53 − 42 =
  39. 39.1028 − 988 =
  40. 40.104 − 65 =

Answer key

  1. 25
  2. 35
  3. 14
  4. 16
  5. 29
  6. 38
  7. 21
  8. 48
  9. 23
  10. 39
  11. 18
  12. 4
  13. 26
  14. 10
  15. 26
  16. 29
  17. 41
  18. 18
  19. 29
  20. 32
  21. 43
  22. 11
  23. 35
  24. 32
  25. 36
  26. 24
  27. 34
  28. 13
  29. 43
  30. 35
  31. 33
  32. 16
  33. 25
  34. 23
  35. 27
  36. 10
  37. 25
  38. 11
  39. 40
  40. 39

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