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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 583 · 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. 1.307 − 295 =
  2. 2.304 − 298 =
  3. 3.80 − 35 =
  4. 4.90 − 60 =
  5. 5.126 − 97 =
  6. 6.329 − 275 =
  7. 7.104 − 61 =
  8. 8.525 − 480 =
  9. 9.86 − 64 =
  10. 10.116 − 95 =
  11. 11.207 − 196 =
  12. 12.103 − 94 =
  13. 13.63 − 48 =
  14. 14.524 − 482 =
  15. 15.117 − 82 =
  16. 16.224 − 178 =
  17. 17.89 − 57 =
  18. 18.75 − 43 =
  19. 19.309 − 280 =
  20. 20.1010 − 983 =
  21. 21.530 − 484 =
  22. 22.65 − 48 =
  23. 23.112 − 98 =
  24. 24.1004 − 991 =
  25. 25.86 − 68 =
  26. 26.60 − 48 =
  27. 27.207 − 182 =
  28. 28.61 − 39 =
  29. 29.504 − 496 =
  30. 30.326 − 277 =
  31. 31.306 − 281 =
  32. 32.1010 − 993 =
  33. 33.509 − 493 =
  34. 34.503 − 494 =
  35. 35.313 − 282 =
  36. 36.503 − 479 =
  37. 37.75 − 31 =
  38. 38.70 − 28 =
  39. 39.327 − 276 =
  40. 40.203 − 196 =

Answer key

  1. 12
  2. 6
  3. 45
  4. 30
  5. 29
  6. 54
  7. 43
  8. 45
  9. 22
  10. 21
  11. 11
  12. 9
  13. 15
  14. 42
  15. 35
  16. 46
  17. 32
  18. 32
  19. 29
  20. 27
  21. 46
  22. 17
  23. 14
  24. 13
  25. 18
  26. 12
  27. 25
  28. 22
  29. 8
  30. 49
  31. 25
  32. 17
  33. 16
  34. 9
  35. 31
  36. 24
  37. 44
  38. 42
  39. 51
  40. 7

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