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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 387 · 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. 1.1030 − 996 =
  2. 2.306 − 298 =
  3. 3.506 − 496 =
  4. 4.55 − 44 =
  5. 5.108 − 88 =
  6. 6.106 − 55 =
  7. 7.1023 − 983 =
  8. 8.106 − 76 =
  9. 9.60 − 26 =
  10. 10.58 − 34 =
  11. 11.85 − 58 =
  12. 12.116 − 85 =
  13. 13.1006 − 977 =
  14. 14.1002 − 992 =
  15. 15.109 − 59 =
  16. 16.76 − 42 =
  17. 17.510 − 476 =
  18. 18.324 − 285 =
  19. 19.518 − 488 =
  20. 20.312 − 285 =
  21. 21.1027 − 989 =
  22. 22.1021 − 985 =
  23. 23.526 − 497 =
  24. 24.97 − 78 =
  25. 25.203 − 176 =
  26. 26.121 − 85 =
  27. 27.81 − 77 =
  28. 28.514 − 477 =
  29. 29.59 − 44 =
  30. 30.69 − 34 =
  31. 31.109 − 67 =
  32. 32.503 − 487 =
  33. 33.328 − 296 =
  34. 34.103 − 86 =
  35. 35.1011 − 997 =
  36. 36.228 − 189 =
  37. 37.1022 − 992 =
  38. 38.204 − 190 =
  39. 39.513 − 480 =
  40. 40.510 − 483 =

Answer key

  1. 34
  2. 8
  3. 10
  4. 11
  5. 20
  6. 51
  7. 40
  8. 30
  9. 34
  10. 24
  11. 27
  12. 31
  13. 29
  14. 10
  15. 50
  16. 34
  17. 34
  18. 39
  19. 30
  20. 27
  21. 38
  22. 36
  23. 29
  24. 19
  25. 27
  26. 36
  27. 4
  28. 37
  29. 15
  30. 35
  31. 42
  32. 16
  33. 32
  34. 17
  35. 14
  36. 39
  37. 30
  38. 14
  39. 33
  40. 27

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