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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 64 · 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. 1.527 − 490 =
  2. 2.1002 − 987 =
  3. 3.102 − 71 =
  4. 4.115 − 91 =
  5. 5.528 − 482 =
  6. 6.530 − 490 =
  7. 7.98 − 57 =
  8. 8.1002 − 993 =
  9. 9.66 − 33 =
  10. 10.329 − 281 =
  11. 11.54 − 43 =
  12. 12.104 − 75 =
  13. 13.310 − 283 =
  14. 14.116 − 83 =
  15. 15.520 − 498 =
  16. 16.1008 − 978 =
  17. 17.63 − 31 =
  18. 18.53 − 25 =
  19. 19.1006 − 996 =
  20. 20.505 − 480 =
  21. 21.319 − 280 =
  22. 22.56 − 31 =
  23. 23.314 − 297 =
  24. 24.223 − 195 =
  25. 25.91 − 72 =
  26. 26.201 − 191 =
  27. 27.207 − 185 =
  28. 28.1003 − 989 =
  29. 29.512 − 486 =
  30. 30.108 − 68 =
  31. 31.210 − 188 =
  32. 32.507 − 478 =
  33. 33.56 − 35 =
  34. 34.71 − 25 =
  35. 35.520 − 488 =
  36. 36.308 − 284 =
  37. 37.502 − 485 =
  38. 38.129 − 78 =
  39. 39.316 − 294 =
  40. 40.103 − 60 =

Answer key

  1. 37
  2. 15
  3. 31
  4. 24
  5. 46
  6. 40
  7. 41
  8. 9
  9. 33
  10. 48
  11. 11
  12. 29
  13. 27
  14. 33
  15. 22
  16. 30
  17. 32
  18. 28
  19. 10
  20. 25
  21. 39
  22. 25
  23. 17
  24. 28
  25. 19
  26. 10
  27. 22
  28. 14
  29. 26
  30. 40
  31. 22
  32. 29
  33. 21
  34. 46
  35. 32
  36. 24
  37. 17
  38. 51
  39. 22
  40. 43

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