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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 361 · 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. 1.11.97 ÷ 100 =
  2. 2.39.65 × 10 =
  3. 3.46.27 ÷ 100 =
  4. 4.33.63 × 1000 =
  5. 5.56.6 × 1000 =
  6. 6.6.65 × 10 =
  7. 7.456.6 ÷ 10 =
  8. 8.45.5 × 100 =
  9. 9.49.45 × 10 =
  10. 10.153.9 × 1000 =
  11. 11.20.18 ÷ 1000 =
  12. 12.145.7 × 1000 =
  13. 13.280.7 × 100 =
  14. 14.44.52 × 10 =
  15. 15.496.3 × 1000 =
  16. 16.149.4 × 100 =
  17. 17.314.1 ÷ 10 =
  18. 18.435.1 ÷ 1000 =
  19. 19.312.1 × 100 =
  20. 20.382.3 ÷ 1000 =
  21. 21.29.59 ÷ 1000 =
  22. 22.43.81 ÷ 100 =
  23. 23.52.3 ÷ 1000 =
  24. 24.279.4 × 1000 =
  25. 25.12.45 × 1000 =
  26. 26.14.26 × 10 =
  27. 27.47.95 ÷ 1000 =
  28. 28.13.85 × 10 =
  29. 29.26.54 ÷ 10 =
  30. 30.3.38 × 100 =
  31. 31.345.1 × 10 =
  32. 32.18.21 ÷ 1000 =
  33. 33.283.1 × 1000 =
  34. 34.134.7 × 10 =
  35. 35.414.8 × 100 =
  36. 36.15.79 ÷ 10 =
  37. 37.469.1 ÷ 10 =
  38. 38.34.55 ÷ 1000 =
  39. 39.361.6 × 1000 =
  40. 40.21.52 × 1000 =

Answer key

  1. 0.1197
  2. 396.5
  3. 0.4627
  4. 33630
  5. 56600
  6. 66.5
  7. 45.66
  8. 4550
  9. 494.5
  10. 153900
  11. 0.02018
  12. 145700
  13. 28070
  14. 445.2
  15. 496300
  16. 14940
  17. 31.41
  18. 0.4351
  19. 31210
  20. 0.3823
  21. 0.02959
  22. 0.4381
  23. 0.0523
  24. 279400
  25. 12450
  26. 142.6
  27. 0.04795
  28. 138.5
  29. 2.654
  30. 338
  31. 3451
  32. 0.01821
  33. 283100
  34. 1347
  35. 41480
  36. 1.579
  37. 46.91
  38. 0.03455
  39. 361600
  40. 21520

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