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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 135 · 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. 1.224 − 189 =
  2. 2.328 − 285 =
  3. 3.502 − 495 =
  4. 4.85 − 68 =
  5. 5.91 − 69 =
  6. 6.528 − 495 =
  7. 7.61 − 39 =
  8. 8.65 − 29 =
  9. 9.106 − 73 =
  10. 10.95 − 76 =
  11. 11.214 − 179 =
  12. 12.206 − 185 =
  13. 13.510 − 477 =
  14. 14.122 − 97 =
  15. 15.317 − 284 =
  16. 16.55 − 44 =
  17. 17.227 − 180 =
  18. 18.225 − 188 =
  19. 19.203 − 181 =
  20. 20.210 − 197 =
  21. 21.98 − 76 =
  22. 22.1028 − 979 =
  23. 23.95 − 58 =
  24. 24.518 − 488 =
  25. 25.101 − 91 =
  26. 26.502 − 493 =
  27. 27.1024 − 984 =
  28. 28.205 − 186 =
  29. 29.1028 − 975 =
  30. 30.83 − 75 =
  31. 31.73 − 43 =
  32. 32.77 − 31 =
  33. 33.93 − 56 =
  34. 34.505 − 492 =
  35. 35.305 − 292 =
  36. 36.128 − 96 =
  37. 37.119 − 82 =
  38. 38.326 − 290 =
  39. 39.1007 − 977 =
  40. 40.126 − 76 =

Answer key

  1. 35
  2. 43
  3. 7
  4. 17
  5. 22
  6. 33
  7. 22
  8. 36
  9. 33
  10. 19
  11. 35
  12. 21
  13. 33
  14. 25
  15. 33
  16. 11
  17. 47
  18. 37
  19. 22
  20. 13
  21. 22
  22. 49
  23. 37
  24. 30
  25. 10
  26. 9
  27. 40
  28. 19
  29. 53
  30. 8
  31. 30
  32. 46
  33. 37
  34. 13
  35. 13
  36. 32
  37. 37
  38. 36
  39. 30
  40. 50

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