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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 624 · 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. 1.501 − 479 =
  2. 2.1006 − 993 =
  3. 3.1025 − 994 =
  4. 4.124 − 91 =
  5. 5.59 − 37 =
  6. 6.101 − 75 =
  7. 7.219 − 187 =
  8. 8.518 − 482 =
  9. 9.315 − 294 =
  10. 10.55 − 38 =
  11. 11.304 − 298 =
  12. 12.123 − 92 =
  13. 13.514 − 480 =
  14. 14.1014 − 994 =
  15. 15.80 − 38 =
  16. 16.305 − 286 =
  17. 17.130 − 96 =
  18. 18.57 − 42 =
  19. 19.106 − 59 =
  20. 20.315 − 288 =
  21. 21.81 − 70 =
  22. 22.209 − 194 =
  23. 23.509 − 486 =
  24. 24.517 − 498 =
  25. 25.329 − 291 =
  26. 26.212 − 183 =
  27. 27.222 − 175 =
  28. 28.71 − 42 =
  29. 29.89 − 62 =
  30. 30.521 − 496 =
  31. 31.56 − 38 =
  32. 32.302 − 277 =
  33. 33.308 − 284 =
  34. 34.223 − 194 =
  35. 35.119 − 86 =
  36. 36.84 − 74 =
  37. 37.1027 − 991 =
  38. 38.1018 − 983 =
  39. 39.69 − 47 =
  40. 40.506 − 478 =

Answer key

  1. 22
  2. 13
  3. 31
  4. 33
  5. 22
  6. 26
  7. 32
  8. 36
  9. 21
  10. 17
  11. 6
  12. 31
  13. 34
  14. 20
  15. 42
  16. 19
  17. 34
  18. 15
  19. 47
  20. 27
  21. 11
  22. 15
  23. 23
  24. 19
  25. 38
  26. 29
  27. 47
  28. 29
  29. 27
  30. 25
  31. 18
  32. 25
  33. 24
  34. 29
  35. 33
  36. 10
  37. 36
  38. 35
  39. 22
  40. 28

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