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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 754 · 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. 1.126 − 90 =
  2. 2.120 − 90 =
  3. 3.124 − 93 =
  4. 4.506 − 483 =
  5. 5.59 − 38 =
  6. 6.66 − 38 =
  7. 7.126 − 79 =
  8. 8.304 − 293 =
  9. 9.61 − 44 =
  10. 10.52 − 40 =
  11. 11.53 − 44 =
  12. 12.307 − 293 =
  13. 13.92 − 63 =
  14. 14.53 − 41 =
  15. 15.52 − 45 =
  16. 16.128 − 75 =
  17. 17.511 − 489 =
  18. 18.108 − 67 =
  19. 19.217 − 176 =
  20. 20.124 − 95 =
  21. 21.61 − 39 =
  22. 22.111 − 88 =
  23. 23.117 − 78 =
  24. 24.225 − 175 =
  25. 25.227 − 175 =
  26. 26.321 − 279 =
  27. 27.56 − 32 =
  28. 28.208 − 188 =
  29. 29.104 − 98 =
  30. 30.103 − 55 =
  31. 31.112 − 96 =
  32. 32.108 − 80 =
  33. 33.301 − 282 =
  34. 34.510 − 487 =
  35. 35.54 − 31 =
  36. 36.104 − 96 =
  37. 37.504 − 497 =
  38. 38.526 − 497 =
  39. 39.305 − 277 =
  40. 40.114 − 92 =

Answer key

  1. 36
  2. 30
  3. 31
  4. 23
  5. 21
  6. 28
  7. 47
  8. 11
  9. 17
  10. 12
  11. 9
  12. 14
  13. 29
  14. 12
  15. 7
  16. 53
  17. 22
  18. 41
  19. 41
  20. 29
  21. 22
  22. 23
  23. 39
  24. 50
  25. 52
  26. 42
  27. 24
  28. 20
  29. 6
  30. 48
  31. 16
  32. 28
  33. 19
  34. 23
  35. 23
  36. 8
  37. 7
  38. 29
  39. 28
  40. 22

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