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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 658 · 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. 1.58 − 35 =
  2. 2.77 − 36 =
  3. 3.89 − 68 =
  4. 4.52 − 31 =
  5. 5.110 − 78 =
  6. 6.108 − 98 =
  7. 7.225 − 198 =
  8. 8.52 − 25 =
  9. 9.1017 − 989 =
  10. 10.103 − 90 =
  11. 11.304 − 277 =
  12. 12.85 − 59 =
  13. 13.503 − 496 =
  14. 14.1001 − 993 =
  15. 15.307 − 288 =
  16. 16.92 − 69 =
  17. 17.517 − 475 =
  18. 18.102 − 63 =
  19. 19.505 − 481 =
  20. 20.91 − 60 =
  21. 21.58 − 25 =
  22. 22.107 − 91 =
  23. 23.307 − 278 =
  24. 24.515 − 479 =
  25. 25.108 − 94 =
  26. 26.99 − 78 =
  27. 27.90 − 60 =
  28. 28.1023 − 978 =
  29. 29.1005 − 979 =
  30. 30.96 − 71 =
  31. 31.323 − 296 =
  32. 32.93 − 60 =
  33. 33.62 − 37 =
  34. 34.52 − 29 =
  35. 35.94 − 72 =
  36. 36.311 − 298 =
  37. 37.97 − 77 =
  38. 38.87 − 59 =
  39. 39.203 − 179 =
  40. 40.222 − 192 =

Answer key

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

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