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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 938 · 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. 1.516 − 479 =
  2. 2.1004 − 986 =
  3. 3.1017 − 980 =
  4. 4.1028 − 978 =
  5. 5.127 − 88 =
  6. 6.101 − 80 =
  7. 7.86 − 77 =
  8. 8.112 − 88 =
  9. 9.85 − 56 =
  10. 10.103 − 56 =
  11. 11.513 − 481 =
  12. 12.108 − 70 =
  13. 13.62 − 33 =
  14. 14.110 − 97 =
  15. 15.67 − 29 =
  16. 16.526 − 490 =
  17. 17.211 − 184 =
  18. 18.517 − 488 =
  19. 19.103 − 96 =
  20. 20.71 − 46 =
  21. 21.521 − 495 =
  22. 22.204 − 197 =
  23. 23.88 − 70 =
  24. 24.524 − 477 =
  25. 25.88 − 64 =
  26. 26.121 − 82 =
  27. 27.52 − 37 =
  28. 28.1021 − 978 =
  29. 29.81 − 61 =
  30. 30.1002 − 995 =
  31. 31.1021 − 980 =
  32. 32.93 − 76 =
  33. 33.518 − 480 =
  34. 34.127 − 95 =
  35. 35.128 − 94 =
  36. 36.78 − 35 =
  37. 37.510 − 479 =
  38. 38.1001 − 982 =
  39. 39.1024 − 979 =
  40. 40.1009 − 986 =

Answer key

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

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