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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 366 · 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. 1.107.5 ÷ 10 =
  2. 2.7.18 × 1000 =
  3. 3.306.3 ÷ 10 =
  4. 4.38.01 × 10 =
  5. 5.113.4 ÷ 1000 =
  6. 6.10.22 × 100 =
  7. 7.308.9 × 10 =
  8. 8.386.5 ÷ 1000 =
  9. 9.3.9 × 100 =
  10. 10.396.4 × 10 =
  11. 11.38.13 × 10 =
  12. 12.49.4 × 1000 =
  13. 13.289.1 ÷ 1000 =
  14. 14.185.1 × 100 =
  15. 15.432.1 ÷ 10 =
  16. 16.46.04 ÷ 10 =
  17. 17.468.5 ÷ 10 =
  18. 18.26.55 ÷ 10 =
  19. 19.87.1 × 1000 =
  20. 20.455.2 × 10 =
  21. 21.42.58 × 1000 =
  22. 22.1.3 ÷ 100 =
  23. 23.35.06 × 10 =
  24. 24.184.2 ÷ 10 =
  25. 25.424.3 ÷ 100 =
  26. 26.47.2 ÷ 100 =
  27. 27.188.8 × 10 =
  28. 28.290.7 ÷ 100 =
  29. 29.419.1 ÷ 1000 =
  30. 30.458.8 ÷ 1000 =
  31. 31.70.2 × 10 =
  32. 32.40.79 × 1000 =
  33. 33.42.45 × 100 =
  34. 34.6.23 ÷ 1000 =
  35. 35.302.9 × 10 =
  36. 36.41.71 × 1000 =
  37. 37.285.7 × 1000 =
  38. 38.300.4 ÷ 100 =
  39. 39.68.1 ÷ 10 =
  40. 40.31.89 × 10 =

Answer key

  1. 10.75
  2. 7180
  3. 30.63
  4. 380.1
  5. 0.1134
  6. 1022
  7. 3089
  8. 0.3865
  9. 390
  10. 3964
  11. 381.3
  12. 49400
  13. 0.2891
  14. 18510
  15. 43.21
  16. 4.604
  17. 46.85
  18. 2.655
  19. 87100
  20. 4552
  21. 42580
  22. 0.013
  23. 350.6
  24. 18.42
  25. 4.243
  26. 0.472
  27. 1888
  28. 2.907
  29. 0.4191
  30. 0.4588
  31. 702
  32. 40790
  33. 4245
  34. 0.00623
  35. 3029
  36. 41710
  37. 285700
  38. 3.004
  39. 6.81
  40. 318.9

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