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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 472 · 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. 1.106 − 80 =
  2. 2.203 − 177 =
  3. 3.97 − 77 =
  4. 4.524 − 483 =
  5. 5.110 − 75 =
  6. 6.52 − 43 =
  7. 7.55 − 46 =
  8. 8.510 − 491 =
  9. 9.524 − 484 =
  10. 10.312 − 291 =
  11. 11.202 − 178 =
  12. 12.209 − 177 =
  13. 13.66 − 46 =
  14. 14.104 − 94 =
  15. 15.226 − 195 =
  16. 16.76 − 27 =
  17. 17.61 − 46 =
  18. 18.528 − 490 =
  19. 19.101 − 86 =
  20. 20.1016 − 985 =
  21. 21.305 − 275 =
  22. 22.101 − 67 =
  23. 23.325 − 288 =
  24. 24.95 − 65 =
  25. 25.512 − 476 =
  26. 26.96 − 63 =
  27. 27.203 − 191 =
  28. 28.1017 − 997 =
  29. 29.1027 − 988 =
  30. 30.306 − 284 =
  31. 31.90 − 77 =
  32. 32.1009 − 994 =
  33. 33.129 − 88 =
  34. 34.104 − 91 =
  35. 35.105 − 88 =
  36. 36.1019 − 996 =
  37. 37.109 − 92 =
  38. 38.1019 − 988 =
  39. 39.52 − 38 =
  40. 40.513 − 483 =

Answer key

  1. 26
  2. 26
  3. 20
  4. 41
  5. 35
  6. 9
  7. 9
  8. 19
  9. 40
  10. 21
  11. 24
  12. 32
  13. 20
  14. 10
  15. 31
  16. 49
  17. 15
  18. 38
  19. 15
  20. 31
  21. 30
  22. 34
  23. 37
  24. 30
  25. 36
  26. 33
  27. 12
  28. 20
  29. 39
  30. 22
  31. 13
  32. 15
  33. 41
  34. 13
  35. 17
  36. 23
  37. 17
  38. 31
  39. 14
  40. 30

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