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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 665 · 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. 1.75 − 42 =
  2. 2.321 − 292 =
  3. 3.309 − 292 =
  4. 4.98 − 70 =
  5. 5.202 − 195 =
  6. 6.118 − 79 =
  7. 7.322 − 289 =
  8. 8.70 − 46 =
  9. 9.217 − 195 =
  10. 10.315 − 297 =
  11. 11.1023 − 995 =
  12. 12.529 − 478 =
  13. 13.105 − 79 =
  14. 14.120 − 77 =
  15. 15.1018 − 980 =
  16. 16.69 − 40 =
  17. 17.68 − 32 =
  18. 18.102 − 82 =
  19. 19.118 − 87 =
  20. 20.314 − 282 =
  21. 21.112 − 94 =
  22. 22.324 − 295 =
  23. 23.63 − 32 =
  24. 24.208 − 194 =
  25. 25.93 − 61 =
  26. 26.101 − 71 =
  27. 27.314 − 295 =
  28. 28.124 − 77 =
  29. 29.201 − 198 =
  30. 30.101 − 60 =
  31. 31.318 − 276 =
  32. 32.1016 − 991 =
  33. 33.99 − 67 =
  34. 34.1019 − 981 =
  35. 35.209 − 183 =
  36. 36.67 − 42 =
  37. 37.104 − 56 =
  38. 38.505 − 497 =
  39. 39.102 − 86 =
  40. 40.1028 − 986 =

Answer key

  1. 33
  2. 29
  3. 17
  4. 28
  5. 7
  6. 39
  7. 33
  8. 24
  9. 22
  10. 18
  11. 28
  12. 51
  13. 26
  14. 43
  15. 38
  16. 29
  17. 36
  18. 20
  19. 31
  20. 32
  21. 18
  22. 29
  23. 31
  24. 14
  25. 32
  26. 30
  27. 19
  28. 47
  29. 3
  30. 41
  31. 42
  32. 25
  33. 32
  34. 38
  35. 26
  36. 25
  37. 48
  38. 8
  39. 16
  40. 42

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