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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 661 · 40 questions
TalentJR

The fast method (Jump the point): Count the zeros: 10 → 1 jump, 100 → 2 jumps, 1000 → 3 jumps. × moves the point right; ÷ moves it left. Run out of digits? Fill the gaps with 0s. Drop 0s at the end of a decimal: 3.40 is 3.4.

NameDateTime takenScore ___ / 40
  1. 1.23.39 × 100 =
  2. 2.2.77 ÷ 100 =
  3. 3.3.1 × 10 =
  4. 4.46.91 ÷ 1000 =
  5. 5.11.42 × 10 =
  6. 6.0.44 × 1000 =
  7. 7.38.71 ÷ 100 =
  8. 8.33.68 ÷ 1000 =
  9. 9.300.2 ÷ 100 =
  10. 10.33.19 × 10 =
  11. 11.350.3 × 100 =
  12. 12.446.2 × 1000 =
  13. 13.496.1 ÷ 1000 =
  14. 14.231.4 ÷ 100 =
  15. 15.63.2 × 100 =
  16. 16.8.94 ÷ 10 =
  17. 17.122.1 × 1000 =
  18. 18.34.5 × 100 =
  19. 19.34.4 × 10 =
  20. 20.37.5 ÷ 1000 =
  21. 21.115.8 × 100 =
  22. 22.14.08 ÷ 10 =
  23. 23.277.1 × 10 =
  24. 24.328.6 ÷ 100 =
  25. 25.6.54 ÷ 100 =
  26. 26.41.31 ÷ 10 =
  27. 27.360.7 × 100 =
  28. 28.174.8 ÷ 10 =
  29. 29.398.8 ÷ 1000 =
  30. 30.274.6 × 100 =
  31. 31.116.6 × 1000 =
  32. 32.29.05 × 1000 =
  33. 33.39.42 × 100 =
  34. 34.40.72 × 10 =
  35. 35.8.83 ÷ 10 =
  36. 36.234.4 ÷ 10 =
  37. 37.38.96 × 10 =
  38. 38.259.5 ÷ 100 =
  39. 39.44.12 ÷ 10 =
  40. 40.5.32 × 1000 =

Answer key

  1. 2339
  2. 0.0277
  3. 31
  4. 0.04691
  5. 114.2
  6. 440
  7. 0.3871
  8. 0.03368
  9. 3.002
  10. 331.9
  11. 35030
  12. 446200
  13. 0.4961
  14. 2.314
  15. 6320
  16. 0.894
  17. 122100
  18. 3450
  19. 344
  20. 0.0375
  21. 11580
  22. 1.408
  23. 2771
  24. 3.286
  25. 0.0654
  26. 4.131
  27. 36070
  28. 17.48
  29. 0.3988
  30. 27460
  31. 116600
  32. 29050
  33. 3942
  34. 407.2
  35. 0.883
  36. 23.44
  37. 389.6
  38. 2.595
  39. 4.412
  40. 5320

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