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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 982 · 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. 1.502 − 487 =
  2. 2.308 − 293 =
  3. 3.224 − 178 =
  4. 4.93 − 56 =
  5. 5.302 − 289 =
  6. 6.203 − 178 =
  7. 7.305 − 297 =
  8. 8.1017 − 988 =
  9. 9.118 − 90 =
  10. 10.1027 − 986 =
  11. 11.530 − 494 =
  12. 12.59 − 41 =
  13. 13.206 − 193 =
  14. 14.103 − 76 =
  15. 15.52 − 30 =
  16. 16.99 − 69 =
  17. 17.82 − 56 =
  18. 18.93 − 66 =
  19. 19.216 − 176 =
  20. 20.53 − 31 =
  21. 21.208 − 181 =
  22. 22.310 − 282 =
  23. 23.78 − 34 =
  24. 24.104 − 89 =
  25. 25.1009 − 976 =
  26. 26.114 − 83 =
  27. 27.68 − 36 =
  28. 28.59 − 45 =
  29. 29.214 − 188 =
  30. 30.90 − 70 =
  31. 31.126 − 81 =
  32. 32.74 − 35 =
  33. 33.121 − 96 =
  34. 34.104 − 76 =
  35. 35.80 − 33 =
  36. 36.511 − 493 =
  37. 37.86 − 72 =
  38. 38.74 − 25 =
  39. 39.215 − 176 =
  40. 40.51 − 34 =

Answer key

  1. 15
  2. 15
  3. 46
  4. 37
  5. 13
  6. 25
  7. 8
  8. 29
  9. 28
  10. 41
  11. 36
  12. 18
  13. 13
  14. 27
  15. 22
  16. 30
  17. 26
  18. 27
  19. 40
  20. 22
  21. 27
  22. 28
  23. 44
  24. 15
  25. 33
  26. 31
  27. 32
  28. 14
  29. 26
  30. 20
  31. 45
  32. 39
  33. 25
  34. 28
  35. 47
  36. 18
  37. 14
  38. 49
  39. 39
  40. 17

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