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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 737 · 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. 1.213 − 177 =
  2. 2.505 − 475 =
  3. 3.515 − 495 =
  4. 4.51 − 42 =
  5. 5.304 − 296 =
  6. 6.507 − 475 =
  7. 7.83 − 75 =
  8. 8.1004 − 979 =
  9. 9.224 − 193 =
  10. 10.1030 − 997 =
  11. 11.220 − 190 =
  12. 12.314 − 284 =
  13. 13.520 − 479 =
  14. 14.125 − 93 =
  15. 15.202 − 186 =
  16. 16.507 − 497 =
  17. 17.106 − 77 =
  18. 18.122 − 82 =
  19. 19.79 − 43 =
  20. 20.228 − 186 =
  21. 21.64 − 40 =
  22. 22.126 − 81 =
  23. 23.93 − 75 =
  24. 24.1023 − 995 =
  25. 25.206 − 178 =
  26. 26.110 − 79 =
  27. 27.222 − 188 =
  28. 28.1018 − 997 =
  29. 29.77 − 42 =
  30. 30.505 − 481 =
  31. 31.122 − 98 =
  32. 32.505 − 477 =
  33. 33.303 − 297 =
  34. 34.56 − 44 =
  35. 35.87 − 69 =
  36. 36.515 − 494 =
  37. 37.107 − 86 =
  38. 38.218 − 186 =
  39. 39.509 − 477 =
  40. 40.1020 − 988 =

Answer key

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

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