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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 870 · 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. 1.119.1 × 1000 =
  2. 2.62.4 ÷ 1000 =
  3. 3.222.7 ÷ 10 =
  4. 4.31.95 ÷ 10 =
  5. 5.4.91 × 1000 =
  6. 6.254.2 × 1000 =
  7. 7.30.49 × 10 =
  8. 8.459.1 × 10 =
  9. 9.372.1 ÷ 10 =
  10. 10.49.6 ÷ 10 =
  11. 11.14.43 × 10 =
  12. 12.21.46 × 100 =
  13. 13.80.7 × 1000 =
  14. 14.35.69 × 10 =
  15. 15.3.7 × 10 =
  16. 16.321.3 × 100 =
  17. 17.8.01 ÷ 1000 =
  18. 18.445.1 ÷ 1000 =
  19. 19.17.3 × 100 =
  20. 20.41.74 ÷ 10 =
  21. 21.36.72 ÷ 100 =
  22. 22.38.29 ÷ 1000 =
  23. 23.49.41 ÷ 1000 =
  24. 24.36.86 × 100 =
  25. 25.291.2 × 100 =
  26. 26.16.1 × 100 =
  27. 27.47.91 ÷ 1000 =
  28. 28.22.57 × 10 =
  29. 29.152.4 × 100 =
  30. 30.32.39 ÷ 1000 =
  31. 31.109.1 ÷ 1000 =
  32. 32.366.9 × 10 =
  33. 33.142.7 ÷ 100 =
  34. 34.47.71 × 100 =
  35. 35.46.02 ÷ 10 =
  36. 36.11.5 × 10 =
  37. 37.155.8 ÷ 1000 =
  38. 38.462.1 × 10 =
  39. 39.352.5 ÷ 1000 =
  40. 40.18.79 × 10 =

Answer key

  1. 119100
  2. 0.0624
  3. 22.27
  4. 3.195
  5. 4910
  6. 254200
  7. 304.9
  8. 4591
  9. 37.21
  10. 4.96
  11. 144.3
  12. 2146
  13. 80700
  14. 356.9
  15. 37
  16. 32130
  17. 0.00801
  18. 0.4451
  19. 1730
  20. 4.174
  21. 0.3672
  22. 0.03829
  23. 0.04941
  24. 3686
  25. 29120
  26. 1610
  27. 0.04791
  28. 225.7
  29. 15240
  30. 0.03239
  31. 0.1091
  32. 3669
  33. 1.427
  34. 4771
  35. 4.602
  36. 115
  37. 0.1558
  38. 4621
  39. 0.3525
  40. 187.9

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