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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 19 · 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. 1.51 − 47 =
  2. 2.79 − 47 =
  3. 3.86 − 74 =
  4. 4.92 − 75 =
  5. 5.51 − 37 =
  6. 6.325 − 297 =
  7. 7.524 − 479 =
  8. 8.1016 − 977 =
  9. 9.324 − 281 =
  10. 10.329 − 278 =
  11. 11.111 − 97 =
  12. 12.99 − 73 =
  13. 13.52 − 47 =
  14. 14.63 − 42 =
  15. 15.325 − 276 =
  16. 16.1026 − 993 =
  17. 17.221 − 183 =
  18. 18.1021 − 993 =
  19. 19.114 − 80 =
  20. 20.507 − 477 =
  21. 21.1030 − 992 =
  22. 22.1003 − 983 =
  23. 23.503 − 483 =
  24. 24.310 − 279 =
  25. 25.1016 − 990 =
  26. 26.84 − 75 =
  27. 27.224 − 185 =
  28. 28.107 − 76 =
  29. 29.129 − 98 =
  30. 30.88 − 56 =
  31. 31.510 − 485 =
  32. 32.306 − 297 =
  33. 33.517 − 492 =
  34. 34.1013 − 990 =
  35. 35.119 − 78 =
  36. 36.213 − 186 =
  37. 37.86 − 59 =
  38. 38.122 − 79 =
  39. 39.84 − 71 =
  40. 40.102 − 93 =

Answer key

  1. 4
  2. 32
  3. 12
  4. 17
  5. 14
  6. 28
  7. 45
  8. 39
  9. 43
  10. 51
  11. 14
  12. 26
  13. 5
  14. 21
  15. 49
  16. 33
  17. 38
  18. 28
  19. 34
  20. 30
  21. 38
  22. 20
  23. 20
  24. 31
  25. 26
  26. 9
  27. 39
  28. 31
  29. 31
  30. 32
  31. 25
  32. 9
  33. 25
  34. 23
  35. 41
  36. 27
  37. 27
  38. 43
  39. 13
  40. 9

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