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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 788 · 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. 1.502 − 492 =
  2. 2.304 − 285 =
  3. 3.306 − 288 =
  4. 4.301 − 298 =
  5. 5.516 − 482 =
  6. 6.214 − 192 =
  7. 7.77 − 46 =
  8. 8.206 − 180 =
  9. 9.100 − 69 =
  10. 10.82 − 55 =
  11. 11.1022 − 980 =
  12. 12.1003 − 976 =
  13. 13.318 − 280 =
  14. 14.85 − 56 =
  15. 15.512 − 494 =
  16. 16.209 − 176 =
  17. 17.99 − 58 =
  18. 18.70 − 41 =
  19. 19.1007 − 978 =
  20. 20.86 − 69 =
  21. 21.1017 − 988 =
  22. 22.111 − 90 =
  23. 23.66 − 27 =
  24. 24.107 − 87 =
  25. 25.215 − 194 =
  26. 26.224 − 192 =
  27. 27.93 − 73 =
  28. 28.125 − 82 =
  29. 29.109 − 85 =
  30. 30.221 − 181 =
  31. 31.528 − 488 =
  32. 32.1012 − 984 =
  33. 33.106 − 84 =
  34. 34.506 − 495 =
  35. 35.307 − 286 =
  36. 36.71 − 43 =
  37. 37.519 − 492 =
  38. 38.306 − 275 =
  39. 39.517 − 496 =
  40. 40.305 − 292 =

Answer key

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

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