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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 897 · 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. 1.207 − 186 =
  2. 2.530 − 496 =
  3. 3.312 − 289 =
  4. 4.62 − 40 =
  5. 5.95 − 64 =
  6. 6.230 − 187 =
  7. 7.321 − 282 =
  8. 8.103 − 96 =
  9. 9.207 − 190 =
  10. 10.117 − 96 =
  11. 11.301 − 290 =
  12. 12.209 − 176 =
  13. 13.202 − 190 =
  14. 14.328 − 278 =
  15. 15.1011 − 987 =
  16. 16.1008 − 990 =
  17. 17.502 − 494 =
  18. 18.116 − 92 =
  19. 19.519 − 491 =
  20. 20.329 − 285 =
  21. 21.51 − 25 =
  22. 22.520 − 487 =
  23. 23.112 − 92 =
  24. 24.100 − 59 =
  25. 25.505 − 475 =
  26. 26.106 − 58 =
  27. 27.54 − 33 =
  28. 28.110 − 89 =
  29. 29.213 − 188 =
  30. 30.222 − 183 =
  31. 31.73 − 44 =
  32. 32.329 − 290 =
  33. 33.128 − 83 =
  34. 34.207 − 197 =
  35. 35.1020 − 979 =
  36. 36.102 − 60 =
  37. 37.102 − 67 =
  38. 38.205 − 180 =
  39. 39.107 − 76 =
  40. 40.62 − 48 =

Answer key

  1. 21
  2. 34
  3. 23
  4. 22
  5. 31
  6. 43
  7. 39
  8. 7
  9. 17
  10. 21
  11. 11
  12. 33
  13. 12
  14. 50
  15. 24
  16. 18
  17. 8
  18. 24
  19. 28
  20. 44
  21. 26
  22. 33
  23. 20
  24. 41
  25. 30
  26. 48
  27. 21
  28. 21
  29. 25
  30. 39
  31. 29
  32. 39
  33. 45
  34. 10
  35. 41
  36. 42
  37. 35
  38. 25
  39. 31
  40. 14

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