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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 290 · 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. 1.25.48 ÷ 10 =
  2. 2.406.1 ÷ 1000 =
  3. 3.414.4 × 10 =
  4. 4.16.51 × 10 =
  5. 5.74.7 × 10 =
  6. 6.36.54 ÷ 100 =
  7. 7.187.8 ÷ 100 =
  8. 8.4.27 ÷ 100 =
  9. 9.53.6 × 1000 =
  10. 10.150.7 × 100 =
  11. 11.27.02 × 10 =
  12. 12.417.1 ÷ 1000 =
  13. 13.377.4 × 1000 =
  14. 14.7.87 × 1000 =
  15. 15.48.11 ÷ 10 =
  16. 16.367.6 × 100 =
  17. 17.35.49 × 100 =
  18. 18.11.93 × 10 =
  19. 19.125.1 × 100 =
  20. 20.13.16 ÷ 100 =
  21. 21.139.8 × 10 =
  22. 22.311.6 × 1000 =
  23. 23.11.66 ÷ 10 =
  24. 24.3.11 × 10 =
  25. 25.95.3 × 100 =
  26. 26.121.1 ÷ 1000 =
  27. 27.40.9 ÷ 1000 =
  28. 28.216.6 ÷ 10 =
  29. 29.58.1 × 10 =
  30. 30.368.1 × 10 =
  31. 31.34.71 ÷ 10 =
  32. 32.230.9 ÷ 100 =
  33. 33.43.65 ÷ 1000 =
  34. 34.3.93 ÷ 1000 =
  35. 35.13.61 × 100 =
  36. 36.36.54 ÷ 10 =
  37. 37.9.43 × 1000 =
  38. 38.354.8 ÷ 10 =
  39. 39.35.1 × 100 =
  40. 40.236.7 × 100 =

Answer key

  1. 2.548
  2. 0.4061
  3. 4144
  4. 165.1
  5. 747
  6. 0.3654
  7. 1.878
  8. 0.0427
  9. 53600
  10. 15070
  11. 270.2
  12. 0.4171
  13. 377400
  14. 7870
  15. 4.811
  16. 36760
  17. 3549
  18. 119.3
  19. 12510
  20. 0.1316
  21. 1398
  22. 311600
  23. 1.166
  24. 31.1
  25. 9530
  26. 0.1211
  27. 0.0409
  28. 21.66
  29. 581
  30. 3681
  31. 3.471
  32. 2.309
  33. 0.04365
  34. 0.00393
  35. 1361
  36. 3.654
  37. 9430
  38. 35.48
  39. 3510
  40. 23670

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