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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 667 · 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. 1.47.25 × 100 =
  2. 2.424.1 ÷ 10 =
  3. 3.129.1 × 1000 =
  4. 4.1.3 ÷ 10 =
  5. 5.426.2 ÷ 10 =
  6. 6.0.33 ÷ 100 =
  7. 7.15.58 × 1000 =
  8. 8.49.82 ÷ 100 =
  9. 9.25.81 × 100 =
  10. 10.431.5 ÷ 1000 =
  11. 11.266.1 ÷ 100 =
  12. 12.386.5 × 10 =
  13. 13.270.8 ÷ 100 =
  14. 14.497.6 × 10 =
  15. 15.204.6 × 1000 =
  16. 16.25.08 ÷ 100 =
  17. 17.314.4 ÷ 1000 =
  18. 18.14.19 ÷ 1000 =
  19. 19.362.8 ÷ 100 =
  20. 20.8.11 ÷ 100 =
  21. 21.219.6 ÷ 100 =
  22. 22.30.5 ÷ 1000 =
  23. 23.10.79 × 100 =
  24. 24.14.69 × 1000 =
  25. 25.473.4 ÷ 100 =
  26. 26.175.1 × 100 =
  27. 27.25.48 × 1000 =
  28. 28.33.86 × 1000 =
  29. 29.243.5 ÷ 10 =
  30. 30.25.29 ÷ 100 =
  31. 31.197.1 × 1000 =
  32. 32.15.79 ÷ 10 =
  33. 33.324.5 ÷ 100 =
  34. 34.48.49 × 100 =
  35. 35.31.38 × 1000 =
  36. 36.425.1 ÷ 10 =
  37. 37.45.69 ÷ 1000 =
  38. 38.27.48 ÷ 1000 =
  39. 39.202.1 ÷ 10 =
  40. 40.96.8 × 1000 =

Answer key

  1. 4725
  2. 42.41
  3. 129100
  4. 0.13
  5. 42.62
  6. 0.0033
  7. 15580
  8. 0.4982
  9. 2581
  10. 0.4315
  11. 2.661
  12. 3865
  13. 2.708
  14. 4976
  15. 204600
  16. 0.2508
  17. 0.3144
  18. 0.01419
  19. 3.628
  20. 0.0811
  21. 2.196
  22. 0.0305
  23. 1079
  24. 14690
  25. 4.734
  26. 17510
  27. 25480
  28. 33860
  29. 24.35
  30. 0.2529
  31. 197100
  32. 1.579
  33. 3.245
  34. 4849
  35. 31380
  36. 42.51
  37. 0.04569
  38. 0.02748
  39. 20.21
  40. 96800

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