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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 314 · 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. 1.118 − 90 =
  2. 2.329 − 281 =
  3. 3.82 − 69 =
  4. 4.528 − 493 =
  5. 5.107 − 85 =
  6. 6.1029 − 983 =
  7. 7.323 − 298 =
  8. 8.58 − 48 =
  9. 9.523 − 480 =
  10. 10.91 − 76 =
  11. 11.518 − 493 =
  12. 12.302 − 294 =
  13. 13.228 − 182 =
  14. 14.209 − 180 =
  15. 15.209 − 186 =
  16. 16.63 − 27 =
  17. 17.63 − 39 =
  18. 18.504 − 479 =
  19. 19.127 − 76 =
  20. 20.1012 − 985 =
  21. 21.507 − 481 =
  22. 22.308 − 298 =
  23. 23.207 − 198 =
  24. 24.111 − 75 =
  25. 25.1027 − 998 =
  26. 26.64 − 34 =
  27. 27.305 − 285 =
  28. 28.328 − 286 =
  29. 29.126 − 91 =
  30. 30.61 − 42 =
  31. 31.88 − 67 =
  32. 32.205 − 193 =
  33. 33.327 − 282 =
  34. 34.55 − 46 =
  35. 35.57 − 47 =
  36. 36.69 − 32 =
  37. 37.99 − 77 =
  38. 38.226 − 178 =
  39. 39.58 − 44 =
  40. 40.110 − 56 =

Answer key

  1. 28
  2. 48
  3. 13
  4. 35
  5. 22
  6. 46
  7. 25
  8. 10
  9. 43
  10. 15
  11. 25
  12. 8
  13. 46
  14. 29
  15. 23
  16. 36
  17. 24
  18. 25
  19. 51
  20. 27
  21. 26
  22. 10
  23. 9
  24. 36
  25. 29
  26. 30
  27. 20
  28. 42
  29. 35
  30. 19
  31. 21
  32. 12
  33. 45
  34. 9
  35. 10
  36. 37
  37. 22
  38. 48
  39. 14
  40. 54

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