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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 998 · 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. 1.122 − 84 =
  2. 2.504 − 491 =
  3. 3.1020 − 985 =
  4. 4.83 − 65 =
  5. 5.1017 − 991 =
  6. 6.309 − 294 =
  7. 7.321 − 286 =
  8. 8.103 − 94 =
  9. 9.325 − 284 =
  10. 10.214 − 195 =
  11. 11.110 − 88 =
  12. 12.130 − 81 =
  13. 13.528 − 487 =
  14. 14.328 − 283 =
  15. 15.310 − 275 =
  16. 16.522 − 481 =
  17. 17.1006 − 975 =
  18. 18.525 − 487 =
  19. 19.118 − 97 =
  20. 20.1014 − 991 =
  21. 21.118 − 95 =
  22. 22.527 − 495 =
  23. 23.1014 − 978 =
  24. 24.108 − 90 =
  25. 25.230 − 194 =
  26. 26.58 − 33 =
  27. 27.319 − 282 =
  28. 28.100 − 75 =
  29. 29.323 − 292 =
  30. 30.501 − 498 =
  31. 31.123 − 80 =
  32. 32.211 − 194 =
  33. 33.78 − 47 =
  34. 34.212 − 188 =
  35. 35.1020 − 993 =
  36. 36.1004 − 986 =
  37. 37.527 − 484 =
  38. 38.1028 − 992 =
  39. 39.52 − 47 =
  40. 40.85 − 71 =

Answer key

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

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