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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 816 · 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. 1.64 − 48 =
  2. 2.212 − 193 =
  3. 3.103 − 88 =
  4. 4.80 − 34 =
  5. 5.109 − 81 =
  6. 6.1010 − 986 =
  7. 7.129 − 97 =
  8. 8.311 − 295 =
  9. 9.1011 − 993 =
  10. 10.1015 − 998 =
  11. 11.310 − 296 =
  12. 12.504 − 496 =
  13. 13.520 − 490 =
  14. 14.203 − 182 =
  15. 15.503 − 498 =
  16. 16.311 − 298 =
  17. 17.95 − 70 =
  18. 18.204 − 185 =
  19. 19.107 − 62 =
  20. 20.106 − 76 =
  21. 21.310 − 285 =
  22. 22.107 − 90 =
  23. 23.1005 − 992 =
  24. 24.309 − 275 =
  25. 25.517 − 489 =
  26. 26.129 − 96 =
  27. 27.81 − 63 =
  28. 28.87 − 56 =
  29. 29.307 − 278 =
  30. 30.313 − 291 =
  31. 31.60 − 37 =
  32. 32.66 − 38 =
  33. 33.65 − 31 =
  34. 34.59 − 28 =
  35. 35.1009 − 983 =
  36. 36.51 − 33 =
  37. 37.530 − 498 =
  38. 38.505 − 485 =
  39. 39.85 − 65 =
  40. 40.202 − 191 =

Answer key

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

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