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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 113 · 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. 1.319 − 278 =
  2. 2.81 − 74 =
  3. 3.105 − 77 =
  4. 4.60 − 45 =
  5. 5.103 − 75 =
  6. 6.114 − 94 =
  7. 7.92 − 78 =
  8. 8.311 − 281 =
  9. 9.100 − 61 =
  10. 10.111 − 88 =
  11. 11.59 − 30 =
  12. 12.222 − 188 =
  13. 13.1020 − 985 =
  14. 14.309 − 285 =
  15. 15.108 − 98 =
  16. 16.87 − 76 =
  17. 17.228 − 179 =
  18. 18.122 − 95 =
  19. 19.208 − 176 =
  20. 20.505 − 485 =
  21. 21.113 − 87 =
  22. 22.71 − 45 =
  23. 23.59 − 41 =
  24. 24.101 − 89 =
  25. 25.55 − 31 =
  26. 26.304 − 284 =
  27. 27.81 − 73 =
  28. 28.1009 − 991 =
  29. 29.1028 − 988 =
  30. 30.517 − 478 =
  31. 31.523 − 486 =
  32. 32.75 − 32 =
  33. 33.503 − 492 =
  34. 34.74 − 44 =
  35. 35.76 − 31 =
  36. 36.82 − 63 =
  37. 37.528 − 498 =
  38. 38.108 − 80 =
  39. 39.1027 − 987 =
  40. 40.57 − 33 =

Answer key

  1. 41
  2. 7
  3. 28
  4. 15
  5. 28
  6. 20
  7. 14
  8. 30
  9. 39
  10. 23
  11. 29
  12. 34
  13. 35
  14. 24
  15. 10
  16. 11
  17. 49
  18. 27
  19. 32
  20. 20
  21. 26
  22. 26
  23. 18
  24. 12
  25. 24
  26. 20
  27. 8
  28. 18
  29. 40
  30. 39
  31. 37
  32. 43
  33. 11
  34. 30
  35. 45
  36. 19
  37. 30
  38. 28
  39. 40
  40. 24

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