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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 6 · 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. 1.70 − 31 =
  2. 2.530 − 487 =
  3. 3.80 − 25 =
  4. 4.319 − 288 =
  5. 5.327 − 285 =
  6. 6.1016 − 977 =
  7. 7.119 − 84 =
  8. 8.217 − 189 =
  9. 9.229 − 175 =
  10. 10.70 − 48 =
  11. 11.83 − 78 =
  12. 12.127 − 85 =
  13. 13.225 − 197 =
  14. 14.58 − 27 =
  15. 15.104 − 71 =
  16. 16.508 − 481 =
  17. 17.51 − 45 =
  18. 18.1026 − 993 =
  19. 19.508 − 498 =
  20. 20.221 − 193 =
  21. 21.93 − 74 =
  22. 22.522 − 490 =
  23. 23.56 − 27 =
  24. 24.86 − 62 =
  25. 25.111 − 95 =
  26. 26.324 − 293 =
  27. 27.87 − 72 =
  28. 28.309 − 294 =
  29. 29.53 − 47 =
  30. 30.116 − 79 =
  31. 31.303 − 277 =
  32. 32.78 − 32 =
  33. 33.106 − 76 =
  34. 34.306 − 275 =
  35. 35.88 − 66 =
  36. 36.303 − 298 =
  37. 37.102 − 93 =
  38. 38.208 − 185 =
  39. 39.66 − 36 =
  40. 40.99 − 58 =

Answer key

  1. 39
  2. 43
  3. 55
  4. 31
  5. 42
  6. 39
  7. 35
  8. 28
  9. 54
  10. 22
  11. 5
  12. 42
  13. 28
  14. 31
  15. 33
  16. 27
  17. 6
  18. 33
  19. 10
  20. 28
  21. 19
  22. 32
  23. 29
  24. 24
  25. 16
  26. 31
  27. 15
  28. 15
  29. 6
  30. 37
  31. 26
  32. 46
  33. 30
  34. 31
  35. 22
  36. 5
  37. 9
  38. 23
  39. 30
  40. 41

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