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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 865 · 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. 1.30.51 ÷ 10 =
  2. 2.416.5 ÷ 100 =
  3. 3.15.88 ÷ 1000 =
  4. 4.1.29 × 10 =
  5. 5.23.27 × 100 =
  6. 6.438.7 × 1000 =
  7. 7.284.1 × 1000 =
  8. 8.176.1 ÷ 1000 =
  9. 9.0.88 × 100 =
  10. 10.318.7 ÷ 100 =
  11. 11.410.6 × 1000 =
  12. 12.32.81 ÷ 1000 =
  13. 13.46.45 × 10 =
  14. 14.46.28 ÷ 10 =
  15. 15.228.3 ÷ 1000 =
  16. 16.165.5 ÷ 100 =
  17. 17.19.32 × 100 =
  18. 18.6.74 × 100 =
  19. 19.341.7 × 1000 =
  20. 20.49.45 × 10 =
  21. 21.450.6 ÷ 10 =
  22. 22.64.3 ÷ 10 =
  23. 23.15.19 ÷ 10 =
  24. 24.4.86 × 1000 =
  25. 25.130.8 × 10 =
  26. 26.38.57 × 100 =
  27. 27.45.9 ÷ 1000 =
  28. 28.12.31 × 1000 =
  29. 29.16.1 × 100 =
  30. 30.466.3 × 100 =
  31. 31.68.4 ÷ 1000 =
  32. 32.33.71 × 10 =
  33. 33.11.52 × 100 =
  34. 34.145.5 ÷ 1000 =
  35. 35.72.9 × 10 =
  36. 36.22.99 × 100 =
  37. 37.7.77 × 1000 =
  38. 38.52.6 × 1000 =
  39. 39.48.01 × 1000 =
  40. 40.313.7 ÷ 1000 =

Answer key

  1. 3.051
  2. 4.165
  3. 0.01588
  4. 12.9
  5. 2327
  6. 438700
  7. 284100
  8. 0.1761
  9. 88
  10. 3.187
  11. 410600
  12. 0.03281
  13. 464.5
  14. 4.628
  15. 0.2283
  16. 1.655
  17. 1932
  18. 674
  19. 341700
  20. 494.5
  21. 45.06
  22. 6.43
  23. 1.519
  24. 4860
  25. 1308
  26. 3857
  27. 0.0459
  28. 12310
  29. 1610
  30. 46630
  31. 0.0684
  32. 337.1
  33. 1152
  34. 0.1455
  35. 729
  36. 2299
  37. 7770
  38. 52600
  39. 48010
  40. 0.3137

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