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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 984 · 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. 1.509 − 497 =
  2. 2.79 − 40 =
  3. 3.514 − 475 =
  4. 4.103 − 92 =
  5. 5.104 − 58 =
  6. 6.1006 − 977 =
  7. 7.516 − 489 =
  8. 8.506 − 491 =
  9. 9.323 − 286 =
  10. 10.304 − 279 =
  11. 11.101 − 96 =
  12. 12.223 − 191 =
  13. 13.515 − 496 =
  14. 14.201 − 175 =
  15. 15.502 − 495 =
  16. 16.51 − 48 =
  17. 17.530 − 491 =
  18. 18.129 − 92 =
  19. 19.108 − 70 =
  20. 20.71 − 46 =
  21. 21.112 − 94 =
  22. 22.51 − 43 =
  23. 23.319 − 290 =
  24. 24.1014 − 981 =
  25. 25.126 − 80 =
  26. 26.95 − 66 =
  27. 27.526 − 496 =
  28. 28.72 − 32 =
  29. 29.121 − 96 =
  30. 30.109 − 66 =
  31. 31.73 − 47 =
  32. 32.90 − 61 =
  33. 33.1008 − 979 =
  34. 34.323 − 290 =
  35. 35.509 − 485 =
  36. 36.202 − 187 =
  37. 37.1025 − 995 =
  38. 38.109 − 58 =
  39. 39.113 − 75 =
  40. 40.220 − 190 =

Answer key

  1. 12
  2. 39
  3. 39
  4. 11
  5. 46
  6. 29
  7. 27
  8. 15
  9. 37
  10. 25
  11. 5
  12. 32
  13. 19
  14. 26
  15. 7
  16. 3
  17. 39
  18. 37
  19. 38
  20. 25
  21. 18
  22. 8
  23. 29
  24. 33
  25. 46
  26. 29
  27. 30
  28. 40
  29. 25
  30. 43
  31. 26
  32. 29
  33. 29
  34. 33
  35. 24
  36. 15
  37. 30
  38. 51
  39. 38
  40. 30

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