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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 612 · 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. 1.102 − 96 =
  2. 2.505 − 485 =
  3. 3.87 − 70 =
  4. 4.315 − 290 =
  5. 5.88 − 73 =
  6. 6.211 − 189 =
  7. 7.81 − 63 =
  8. 8.1023 − 975 =
  9. 9.97 − 78 =
  10. 10.219 − 180 =
  11. 11.527 − 475 =
  12. 12.60 − 27 =
  13. 13.101 − 93 =
  14. 14.321 − 289 =
  15. 15.1022 − 976 =
  16. 16.313 − 276 =
  17. 17.228 − 195 =
  18. 18.108 − 87 =
  19. 19.520 − 483 =
  20. 20.303 − 277 =
  21. 21.225 − 181 =
  22. 22.101 − 69 =
  23. 23.73 − 29 =
  24. 24.319 − 293 =
  25. 25.63 − 38 =
  26. 26.209 − 176 =
  27. 27.125 − 98 =
  28. 28.63 − 28 =
  29. 29.53 − 43 =
  30. 30.512 − 494 =
  31. 31.1006 − 988 =
  32. 32.73 − 38 =
  33. 33.508 − 490 =
  34. 34.202 − 194 =
  35. 35.328 − 295 =
  36. 36.329 − 296 =
  37. 37.302 − 282 =
  38. 38.222 − 181 =
  39. 39.52 − 28 =
  40. 40.104 − 65 =

Answer key

  1. 6
  2. 20
  3. 17
  4. 25
  5. 15
  6. 22
  7. 18
  8. 48
  9. 19
  10. 39
  11. 52
  12. 33
  13. 8
  14. 32
  15. 46
  16. 37
  17. 33
  18. 21
  19. 37
  20. 26
  21. 44
  22. 32
  23. 44
  24. 26
  25. 25
  26. 33
  27. 27
  28. 35
  29. 10
  30. 18
  31. 18
  32. 35
  33. 18
  34. 8
  35. 33
  36. 33
  37. 20
  38. 41
  39. 24
  40. 39

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