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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 288 · 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. 1.113 − 90 =
  2. 2.229 − 176 =
  3. 3.109 − 79 =
  4. 4.505 − 477 =
  5. 5.60 − 32 =
  6. 6.308 − 290 =
  7. 7.88 − 67 =
  8. 8.1002 − 996 =
  9. 9.100 − 77 =
  10. 10.204 − 186 =
  11. 11.107 − 75 =
  12. 12.111 − 93 =
  13. 13.1024 − 992 =
  14. 14.95 − 58 =
  15. 15.1016 − 997 =
  16. 16.330 − 298 =
  17. 17.518 − 493 =
  18. 18.228 − 195 =
  19. 19.515 − 475 =
  20. 20.105 − 98 =
  21. 21.225 − 198 =
  22. 22.120 − 98 =
  23. 23.87 − 57 =
  24. 24.510 − 485 =
  25. 25.1022 − 993 =
  26. 26.521 − 492 =
  27. 27.52 − 42 =
  28. 28.507 − 479 =
  29. 29.75 − 46 =
  30. 30.222 − 176 =
  31. 31.328 − 276 =
  32. 32.102 − 83 =
  33. 33.310 − 276 =
  34. 34.1025 − 986 =
  35. 35.314 − 281 =
  36. 36.1022 − 986 =
  37. 37.100 − 78 =
  38. 38.96 − 77 =
  39. 39.202 − 196 =
  40. 40.208 − 198 =

Answer key

  1. 23
  2. 53
  3. 30
  4. 28
  5. 28
  6. 18
  7. 21
  8. 6
  9. 23
  10. 18
  11. 32
  12. 18
  13. 32
  14. 37
  15. 19
  16. 32
  17. 25
  18. 33
  19. 40
  20. 7
  21. 27
  22. 22
  23. 30
  24. 25
  25. 29
  26. 29
  27. 10
  28. 28
  29. 29
  30. 46
  31. 52
  32. 19
  33. 34
  34. 39
  35. 33
  36. 36
  37. 22
  38. 19
  39. 6
  40. 10

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