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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 337 · 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 − 46 =
  2. 2.209 − 198 =
  3. 3.1022 − 998 =
  4. 4.96 − 56 =
  5. 5.110 − 55 =
  6. 6.1015 − 994 =
  7. 7.72 − 27 =
  8. 8.101 − 92 =
  9. 9.526 − 480 =
  10. 10.94 − 75 =
  11. 11.326 − 288 =
  12. 12.93 − 55 =
  13. 13.202 − 181 =
  14. 14.96 − 57 =
  15. 15.1001 − 987 =
  16. 16.113 − 80 =
  17. 17.501 − 489 =
  18. 18.307 − 293 =
  19. 19.210 − 186 =
  20. 20.206 − 187 =
  21. 21.316 − 293 =
  22. 22.1001 − 977 =
  23. 23.85 − 74 =
  24. 24.309 − 290 =
  25. 25.1005 − 996 =
  26. 26.1017 − 992 =
  27. 27.330 − 277 =
  28. 28.303 − 276 =
  29. 29.77 − 32 =
  30. 30.506 − 491 =
  31. 31.89 − 63 =
  32. 32.60 − 26 =
  33. 33.526 − 497 =
  34. 34.311 − 280 =
  35. 35.102 − 90 =
  36. 36.70 − 29 =
  37. 37.106 − 95 =
  38. 38.221 − 193 =
  39. 39.67 − 43 =
  40. 40.101 − 59 =

Answer key

  1. 21
  2. 11
  3. 24
  4. 40
  5. 55
  6. 21
  7. 45
  8. 9
  9. 46
  10. 19
  11. 38
  12. 38
  13. 21
  14. 39
  15. 14
  16. 33
  17. 12
  18. 14
  19. 24
  20. 19
  21. 23
  22. 24
  23. 11
  24. 19
  25. 9
  26. 25
  27. 53
  28. 27
  29. 45
  30. 15
  31. 26
  32. 34
  33. 29
  34. 31
  35. 12
  36. 41
  37. 11
  38. 28
  39. 24
  40. 42

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