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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 755 · 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. 1.102 − 92 =
  2. 2.126 − 83 =
  3. 3.65 − 43 =
  4. 4.504 − 496 =
  5. 5.76 − 45 =
  6. 6.117 − 89 =
  7. 7.1030 − 978 =
  8. 8.307 − 293 =
  9. 9.527 − 480 =
  10. 10.1016 − 989 =
  11. 11.119 − 82 =
  12. 12.524 − 494 =
  13. 13.108 − 76 =
  14. 14.100 − 69 =
  15. 15.1010 − 997 =
  16. 16.228 − 178 =
  17. 17.107 − 88 =
  18. 18.207 − 198 =
  19. 19.210 − 191 =
  20. 20.1003 − 986 =
  21. 21.221 − 178 =
  22. 22.1023 − 994 =
  23. 23.508 − 487 =
  24. 24.108 − 83 =
  25. 25.328 − 285 =
  26. 26.117 − 76 =
  27. 27.102 − 75 =
  28. 28.113 − 81 =
  29. 29.68 − 43 =
  30. 30.96 − 59 =
  31. 31.521 − 476 =
  32. 32.100 − 55 =
  33. 33.115 − 79 =
  34. 34.1007 − 994 =
  35. 35.308 − 290 =
  36. 36.503 − 492 =
  37. 37.507 − 489 =
  38. 38.316 − 292 =
  39. 39.124 − 78 =
  40. 40.1020 − 990 =

Answer key

  1. 10
  2. 43
  3. 22
  4. 8
  5. 31
  6. 28
  7. 52
  8. 14
  9. 47
  10. 27
  11. 37
  12. 30
  13. 32
  14. 31
  15. 13
  16. 50
  17. 19
  18. 9
  19. 19
  20. 17
  21. 43
  22. 29
  23. 21
  24. 25
  25. 43
  26. 41
  27. 27
  28. 32
  29. 25
  30. 37
  31. 45
  32. 45
  33. 36
  34. 13
  35. 18
  36. 11
  37. 18
  38. 24
  39. 46
  40. 30

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