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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 814 · 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. 1.57 − 48 =
  2. 2.74 − 26 =
  3. 3.1007 − 995 =
  4. 4.81 − 64 =
  5. 5.103 − 62 =
  6. 6.116 − 91 =
  7. 7.204 − 196 =
  8. 8.62 − 40 =
  9. 9.95 − 72 =
  10. 10.206 − 185 =
  11. 11.1021 − 996 =
  12. 12.315 − 287 =
  13. 13.101 − 60 =
  14. 14.107 − 79 =
  15. 15.104 − 67 =
  16. 16.124 − 79 =
  17. 17.503 − 481 =
  18. 18.97 − 75 =
  19. 19.83 − 76 =
  20. 20.210 − 192 =
  21. 21.526 − 487 =
  22. 22.202 − 176 =
  23. 23.1018 − 993 =
  24. 24.205 − 178 =
  25. 25.53 − 26 =
  26. 26.69 − 35 =
  27. 27.319 − 284 =
  28. 28.87 − 76 =
  29. 29.123 − 82 =
  30. 30.1024 − 981 =
  31. 31.526 − 492 =
  32. 32.87 − 60 =
  33. 33.95 − 59 =
  34. 34.505 − 486 =
  35. 35.301 − 293 =
  36. 36.124 − 82 =
  37. 37.509 − 478 =
  38. 38.521 − 478 =
  39. 39.88 − 55 =
  40. 40.521 − 482 =

Answer key

  1. 9
  2. 48
  3. 12
  4. 17
  5. 41
  6. 25
  7. 8
  8. 22
  9. 23
  10. 21
  11. 25
  12. 28
  13. 41
  14. 28
  15. 37
  16. 45
  17. 22
  18. 22
  19. 7
  20. 18
  21. 39
  22. 26
  23. 25
  24. 27
  25. 27
  26. 34
  27. 35
  28. 11
  29. 41
  30. 43
  31. 34
  32. 27
  33. 36
  34. 19
  35. 8
  36. 42
  37. 31
  38. 43
  39. 33
  40. 39

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