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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 230 · 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. 1.1021 − 995 =
  2. 2.205 − 187 =
  3. 3.56 − 25 =
  4. 4.507 − 479 =
  5. 5.522 − 480 =
  6. 6.506 − 497 =
  7. 7.1017 − 994 =
  8. 8.77 − 26 =
  9. 9.103 − 80 =
  10. 10.512 − 493 =
  11. 11.86 − 70 =
  12. 12.514 − 490 =
  13. 13.1008 − 997 =
  14. 14.208 − 196 =
  15. 15.65 − 40 =
  16. 16.1015 − 991 =
  17. 17.1001 − 991 =
  18. 18.311 − 278 =
  19. 19.1015 − 982 =
  20. 20.224 − 198 =
  21. 21.205 − 189 =
  22. 22.319 − 292 =
  23. 23.101 − 86 =
  24. 24.81 − 63 =
  25. 25.316 − 276 =
  26. 26.307 − 280 =
  27. 27.320 − 283 =
  28. 28.117 − 89 =
  29. 29.1009 − 997 =
  30. 30.102 − 91 =
  31. 31.310 − 292 =
  32. 32.304 − 277 =
  33. 33.55 − 31 =
  34. 34.58 − 46 =
  35. 35.123 − 94 =
  36. 36.223 − 184 =
  37. 37.511 − 478 =
  38. 38.129 − 78 =
  39. 39.311 − 291 =
  40. 40.56 − 42 =

Answer key

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

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