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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 751 · 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. 1.224 − 198 =
  2. 2.318 − 298 =
  3. 3.123 − 94 =
  4. 4.95 − 59 =
  5. 5.52 − 45 =
  6. 6.505 − 491 =
  7. 7.118 − 82 =
  8. 8.71 − 43 =
  9. 9.130 − 75 =
  10. 10.93 − 65 =
  11. 11.528 − 488 =
  12. 12.96 − 66 =
  13. 13.102 − 66 =
  14. 14.59 − 45 =
  15. 15.204 − 183 =
  16. 16.324 − 292 =
  17. 17.326 − 279 =
  18. 18.1001 − 988 =
  19. 19.1020 − 993 =
  20. 20.304 − 279 =
  21. 21.109 − 69 =
  22. 22.1006 − 992 =
  23. 23.89 − 68 =
  24. 24.124 − 95 =
  25. 25.323 − 276 =
  26. 26.530 − 493 =
  27. 27.1021 − 998 =
  28. 28.98 − 66 =
  29. 29.1001 − 998 =
  30. 30.118 − 90 =
  31. 31.71 − 29 =
  32. 32.108 − 60 =
  33. 33.512 − 483 =
  34. 34.1023 − 998 =
  35. 35.1005 − 978 =
  36. 36.510 − 487 =
  37. 37.125 − 76 =
  38. 38.220 − 196 =
  39. 39.58 − 35 =
  40. 40.527 − 476 =

Answer key

  1. 26
  2. 20
  3. 29
  4. 36
  5. 7
  6. 14
  7. 36
  8. 28
  9. 55
  10. 28
  11. 40
  12. 30
  13. 36
  14. 14
  15. 21
  16. 32
  17. 47
  18. 13
  19. 27
  20. 25
  21. 40
  22. 14
  23. 21
  24. 29
  25. 47
  26. 37
  27. 23
  28. 32
  29. 3
  30. 28
  31. 42
  32. 48
  33. 29
  34. 25
  35. 27
  36. 23
  37. 49
  38. 24
  39. 23
  40. 51

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