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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 140 · 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. 1.227 − 179 =
  2. 2.70 − 42 =
  3. 3.511 − 495 =
  4. 4.303 − 295 =
  5. 5.127 − 98 =
  6. 6.126 − 92 =
  7. 7.119 − 75 =
  8. 8.69 − 25 =
  9. 9.205 − 176 =
  10. 10.1030 − 983 =
  11. 11.209 − 176 =
  12. 12.111 − 86 =
  13. 13.309 − 290 =
  14. 14.107 − 97 =
  15. 15.108 − 76 =
  16. 16.62 − 29 =
  17. 17.125 − 92 =
  18. 18.71 − 48 =
  19. 19.1022 − 992 =
  20. 20.516 − 498 =
  21. 21.227 − 182 =
  22. 22.507 − 478 =
  23. 23.224 − 191 =
  24. 24.1002 − 996 =
  25. 25.206 − 197 =
  26. 26.82 − 78 =
  27. 27.301 − 288 =
  28. 28.228 − 195 =
  29. 29.51 − 27 =
  30. 30.310 − 296 =
  31. 31.1009 − 977 =
  32. 32.101 − 72 =
  33. 33.64 − 28 =
  34. 34.1009 − 988 =
  35. 35.505 − 484 =
  36. 36.104 − 89 =
  37. 37.327 − 295 =
  38. 38.58 − 26 =
  39. 39.110 − 63 =
  40. 40.201 − 196 =

Answer key

  1. 48
  2. 28
  3. 16
  4. 8
  5. 29
  6. 34
  7. 44
  8. 44
  9. 29
  10. 47
  11. 33
  12. 25
  13. 19
  14. 10
  15. 32
  16. 33
  17. 33
  18. 23
  19. 30
  20. 18
  21. 45
  22. 29
  23. 33
  24. 6
  25. 9
  26. 4
  27. 13
  28. 33
  29. 24
  30. 14
  31. 32
  32. 29
  33. 36
  34. 21
  35. 21
  36. 15
  37. 32
  38. 32
  39. 47
  40. 5

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