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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 621 · 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. 1.67 − 37 =
  2. 2.76 − 47 =
  3. 3.126 − 91 =
  4. 4.1009 − 979 =
  5. 5.101 − 95 =
  6. 6.104 − 93 =
  7. 7.330 − 294 =
  8. 8.99 − 70 =
  9. 9.207 − 195 =
  10. 10.309 − 293 =
  11. 11.52 − 40 =
  12. 12.62 − 42 =
  13. 13.208 − 176 =
  14. 14.302 − 288 =
  15. 15.507 − 493 =
  16. 16.59 − 36 =
  17. 17.1015 − 997 =
  18. 18.1008 − 992 =
  19. 19.105 − 72 =
  20. 20.205 − 179 =
  21. 21.325 − 285 =
  22. 22.68 − 27 =
  23. 23.102 − 85 =
  24. 24.85 − 71 =
  25. 25.120 − 88 =
  26. 26.51 − 40 =
  27. 27.65 − 25 =
  28. 28.528 − 493 =
  29. 29.523 − 488 =
  30. 30.57 − 28 =
  31. 31.80 − 29 =
  32. 32.64 − 40 =
  33. 33.99 − 74 =
  34. 34.99 − 61 =
  35. 35.80 − 26 =
  36. 36.309 − 281 =
  37. 37.70 − 34 =
  38. 38.75 − 45 =
  39. 39.129 − 97 =
  40. 40.62 − 36 =

Answer key

  1. 30
  2. 29
  3. 35
  4. 30
  5. 6
  6. 11
  7. 36
  8. 29
  9. 12
  10. 16
  11. 12
  12. 20
  13. 32
  14. 14
  15. 14
  16. 23
  17. 18
  18. 16
  19. 33
  20. 26
  21. 40
  22. 41
  23. 17
  24. 14
  25. 32
  26. 11
  27. 40
  28. 35
  29. 35
  30. 29
  31. 51
  32. 24
  33. 25
  34. 38
  35. 54
  36. 28
  37. 36
  38. 30
  39. 32
  40. 26

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