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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 981 · 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. 1.1011 − 983 =
  2. 2.101 − 59 =
  3. 3.98 − 62 =
  4. 4.316 − 277 =
  5. 5.316 − 298 =
  6. 6.120 − 76 =
  7. 7.1013 − 993 =
  8. 8.61 − 35 =
  9. 9.312 − 289 =
  10. 10.71 − 47 =
  11. 11.310 − 294 =
  12. 12.204 − 197 =
  13. 13.328 − 295 =
  14. 14.55 − 36 =
  15. 15.80 − 42 =
  16. 16.98 − 68 =
  17. 17.59 − 47 =
  18. 18.78 − 27 =
  19. 19.1011 − 979 =
  20. 20.213 − 186 =
  21. 21.94 − 70 =
  22. 22.107 − 73 =
  23. 23.87 − 75 =
  24. 24.100 − 74 =
  25. 25.308 − 296 =
  26. 26.54 − 42 =
  27. 27.322 − 286 =
  28. 28.117 − 94 =
  29. 29.70 − 43 =
  30. 30.1002 − 986 =
  31. 31.102 − 66 =
  32. 32.114 − 78 =
  33. 33.1016 − 986 =
  34. 34.324 − 294 =
  35. 35.109 − 93 =
  36. 36.1025 − 998 =
  37. 37.102 − 78 =
  38. 38.318 − 288 =
  39. 39.60 − 37 =
  40. 40.506 − 492 =

Answer key

  1. 28
  2. 42
  3. 36
  4. 39
  5. 18
  6. 44
  7. 20
  8. 26
  9. 23
  10. 24
  11. 16
  12. 7
  13. 33
  14. 19
  15. 38
  16. 30
  17. 12
  18. 51
  19. 32
  20. 27
  21. 24
  22. 34
  23. 12
  24. 26
  25. 12
  26. 12
  27. 36
  28. 23
  29. 27
  30. 16
  31. 36
  32. 36
  33. 30
  34. 30
  35. 16
  36. 27
  37. 24
  38. 30
  39. 23
  40. 14

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