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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 270 · 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. 1.323 − 295 =
  2. 2.316 − 283 =
  3. 3.90 − 71 =
  4. 4.322 − 282 =
  5. 5.1002 − 996 =
  6. 6.308 − 296 =
  7. 7.72 − 28 =
  8. 8.106 − 69 =
  9. 9.71 − 25 =
  10. 10.325 − 297 =
  11. 11.320 − 278 =
  12. 12.90 − 75 =
  13. 13.118 − 96 =
  14. 14.227 − 197 =
  15. 15.223 − 197 =
  16. 16.1007 − 987 =
  17. 17.511 − 480 =
  18. 18.1007 − 996 =
  19. 19.107 − 79 =
  20. 20.112 − 85 =
  21. 21.206 − 182 =
  22. 22.320 − 283 =
  23. 23.311 − 278 =
  24. 24.1023 − 984 =
  25. 25.119 − 93 =
  26. 26.66 − 38 =
  27. 27.512 − 490 =
  28. 28.208 − 185 =
  29. 29.82 − 70 =
  30. 30.71 − 45 =
  31. 31.104 − 88 =
  32. 32.325 − 292 =
  33. 33.1005 − 994 =
  34. 34.57 − 33 =
  35. 35.101 − 77 =
  36. 36.526 − 478 =
  37. 37.110 − 77 =
  38. 38.230 − 183 =
  39. 39.73 − 36 =
  40. 40.302 − 292 =

Answer key

  1. 28
  2. 33
  3. 19
  4. 40
  5. 6
  6. 12
  7. 44
  8. 37
  9. 46
  10. 28
  11. 42
  12. 15
  13. 22
  14. 30
  15. 26
  16. 20
  17. 31
  18. 11
  19. 28
  20. 27
  21. 24
  22. 37
  23. 33
  24. 39
  25. 26
  26. 28
  27. 22
  28. 23
  29. 12
  30. 26
  31. 16
  32. 33
  33. 11
  34. 24
  35. 24
  36. 48
  37. 33
  38. 47
  39. 37
  40. 10

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