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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 736 · 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. 1.212 − 183 =
  2. 2.1015 − 998 =
  3. 3.309 − 295 =
  4. 4.1022 − 993 =
  5. 5.102 − 93 =
  6. 6.71 − 45 =
  7. 7.66 − 47 =
  8. 8.91 − 55 =
  9. 9.81 − 55 =
  10. 10.1028 − 998 =
  11. 11.75 − 45 =
  12. 12.202 − 181 =
  13. 13.67 − 46 =
  14. 14.503 − 496 =
  15. 15.306 − 296 =
  16. 16.520 − 493 =
  17. 17.211 − 182 =
  18. 18.305 − 288 =
  19. 19.527 − 487 =
  20. 20.222 − 187 =
  21. 21.220 − 197 =
  22. 22.107 − 73 =
  23. 23.1029 − 983 =
  24. 24.127 − 93 =
  25. 25.71 − 38 =
  26. 26.104 − 75 =
  27. 27.222 − 175 =
  28. 28.1023 − 994 =
  29. 29.116 − 82 =
  30. 30.218 − 196 =
  31. 31.59 − 27 =
  32. 32.303 − 285 =
  33. 33.56 − 27 =
  34. 34.106 − 78 =
  35. 35.212 − 181 =
  36. 36.516 − 492 =
  37. 37.526 − 493 =
  38. 38.61 − 42 =
  39. 39.306 − 294 =
  40. 40.201 − 182 =

Answer key

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

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