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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 506 · 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. 1.64 − 36 =
  2. 2.110 − 60 =
  3. 3.122 − 85 =
  4. 4.108 − 58 =
  5. 5.1023 − 979 =
  6. 6.509 − 493 =
  7. 7.112 − 84 =
  8. 8.512 − 481 =
  9. 9.51 − 35 =
  10. 10.103 − 94 =
  11. 11.317 − 298 =
  12. 12.530 − 488 =
  13. 13.523 − 477 =
  14. 14.111 − 95 =
  15. 15.70 − 39 =
  16. 16.1006 − 988 =
  17. 17.509 − 483 =
  18. 18.219 − 197 =
  19. 19.57 − 25 =
  20. 20.80 − 29 =
  21. 21.115 − 93 =
  22. 22.102 − 63 =
  23. 23.513 − 484 =
  24. 24.65 − 26 =
  25. 25.510 − 478 =
  26. 26.99 − 60 =
  27. 27.75 − 41 =
  28. 28.59 − 25 =
  29. 29.70 − 25 =
  30. 30.314 − 282 =
  31. 31.227 − 196 =
  32. 32.78 − 34 =
  33. 33.59 − 33 =
  34. 34.309 − 285 =
  35. 35.106 − 89 =
  36. 36.113 − 87 =
  37. 37.118 − 81 =
  38. 38.315 − 282 =
  39. 39.1001 − 977 =
  40. 40.306 − 292 =

Answer key

  1. 28
  2. 50
  3. 37
  4. 50
  5. 44
  6. 16
  7. 28
  8. 31
  9. 16
  10. 9
  11. 19
  12. 42
  13. 46
  14. 16
  15. 31
  16. 18
  17. 26
  18. 22
  19. 32
  20. 51
  21. 22
  22. 39
  23. 29
  24. 39
  25. 32
  26. 39
  27. 34
  28. 34
  29. 45
  30. 32
  31. 31
  32. 44
  33. 26
  34. 24
  35. 17
  36. 26
  37. 37
  38. 33
  39. 24
  40. 14

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