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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 449 · 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. 1.101 − 95 =
  2. 2.63 − 41 =
  3. 3.310 − 277 =
  4. 4.63 − 45 =
  5. 5.83 − 67 =
  6. 6.113 − 83 =
  7. 7.504 − 495 =
  8. 8.304 − 294 =
  9. 9.71 − 35 =
  10. 10.206 − 197 =
  11. 11.73 − 48 =
  12. 12.1029 − 982 =
  13. 13.93 − 69 =
  14. 14.210 − 189 =
  15. 15.526 − 493 =
  16. 16.85 − 75 =
  17. 17.519 − 488 =
  18. 18.503 − 482 =
  19. 19.86 − 56 =
  20. 20.207 − 196 =
  21. 21.1024 − 994 =
  22. 22.1010 − 985 =
  23. 23.80 − 42 =
  24. 24.304 − 280 =
  25. 25.324 − 298 =
  26. 26.325 − 284 =
  27. 27.215 − 188 =
  28. 28.51 − 34 =
  29. 29.52 − 43 =
  30. 30.108 − 95 =
  31. 31.1002 − 991 =
  32. 32.520 − 483 =
  33. 33.304 − 281 =
  34. 34.230 − 186 =
  35. 35.109 − 83 =
  36. 36.513 − 483 =
  37. 37.310 − 279 =
  38. 38.217 − 197 =
  39. 39.88 − 67 =
  40. 40.1010 − 996 =

Answer key

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

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