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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 155 · 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. 1.97 − 69 =
  2. 2.513 − 489 =
  3. 3.503 − 494 =
  4. 4.91 − 75 =
  5. 5.123 − 91 =
  6. 6.522 − 487 =
  7. 7.313 − 275 =
  8. 8.312 − 297 =
  9. 9.205 − 189 =
  10. 10.508 − 487 =
  11. 11.110 − 75 =
  12. 12.521 − 489 =
  13. 13.514 − 492 =
  14. 14.95 − 68 =
  15. 15.130 − 89 =
  16. 16.206 − 195 =
  17. 17.70 − 46 =
  18. 18.308 − 289 =
  19. 19.129 − 82 =
  20. 20.505 − 487 =
  21. 21.74 − 29 =
  22. 22.117 − 90 =
  23. 23.54 − 34 =
  24. 24.1005 − 989 =
  25. 25.75 − 48 =
  26. 26.114 − 96 =
  27. 27.528 − 485 =
  28. 28.302 − 289 =
  29. 29.54 − 36 =
  30. 30.1020 − 981 =
  31. 31.223 − 193 =
  32. 32.115 − 89 =
  33. 33.1019 − 994 =
  34. 34.322 − 294 =
  35. 35.226 − 187 =
  36. 36.94 − 67 =
  37. 37.1020 − 980 =
  38. 38.502 − 496 =
  39. 39.1013 − 997 =
  40. 40.330 − 290 =

Answer key

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

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