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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 154 · 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. 1.69 − 40 =
  2. 2.58 − 46 =
  3. 3.504 − 497 =
  4. 4.99 − 61 =
  5. 5.224 − 177 =
  6. 6.313 − 291 =
  7. 7.109 − 58 =
  8. 8.90 − 63 =
  9. 9.517 − 498 =
  10. 10.502 − 490 =
  11. 11.55 − 33 =
  12. 12.80 − 46 =
  13. 13.320 − 287 =
  14. 14.212 − 180 =
  15. 15.209 − 180 =
  16. 16.510 − 493 =
  17. 17.525 − 483 =
  18. 18.74 − 36 =
  19. 19.109 − 77 =
  20. 20.93 − 60 =
  21. 21.58 − 28 =
  22. 22.501 − 478 =
  23. 23.308 − 290 =
  24. 24.209 − 176 =
  25. 25.230 − 175 =
  26. 26.128 − 86 =
  27. 27.99 − 67 =
  28. 28.89 − 73 =
  29. 29.1007 − 996 =
  30. 30.118 − 87 =
  31. 31.114 − 79 =
  32. 32.1021 − 978 =
  33. 33.1024 − 988 =
  34. 34.111 − 88 =
  35. 35.303 − 295 =
  36. 36.86 − 60 =
  37. 37.65 − 32 =
  38. 38.1008 − 987 =
  39. 39.75 − 33 =
  40. 40.107 − 94 =

Answer key

  1. 29
  2. 12
  3. 7
  4. 38
  5. 47
  6. 22
  7. 51
  8. 27
  9. 19
  10. 12
  11. 22
  12. 34
  13. 33
  14. 32
  15. 29
  16. 17
  17. 42
  18. 38
  19. 32
  20. 33
  21. 30
  22. 23
  23. 18
  24. 33
  25. 55
  26. 42
  27. 32
  28. 16
  29. 11
  30. 31
  31. 35
  32. 43
  33. 36
  34. 23
  35. 8
  36. 26
  37. 33
  38. 21
  39. 42
  40. 13

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