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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 422 · 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. 1.44.34 × 100 =
  2. 2.36.67 × 1000 =
  3. 3.315.9 ÷ 1000 =
  4. 4.15.9 × 10 =
  5. 5.28.39 ÷ 100 =
  6. 6.73.1 × 1000 =
  7. 7.375.5 × 10 =
  8. 8.2.16 ÷ 1000 =
  9. 9.380.5 ÷ 100 =
  10. 10.42.5 × 10 =
  11. 11.29.93 ÷ 100 =
  12. 12.408.8 ÷ 10 =
  13. 13.312.3 ÷ 10 =
  14. 14.2.15 ÷ 1000 =
  15. 15.28.24 ÷ 100 =
  16. 16.8.11 ÷ 1000 =
  17. 17.17.44 × 100 =
  18. 18.471.4 × 10 =
  19. 19.1.03 × 1000 =
  20. 20.423.6 × 1000 =
  21. 21.28.17 × 1000 =
  22. 22.1.06 × 10 =
  23. 23.354.4 × 1000 =
  24. 24.47.71 ÷ 1000 =
  25. 25.34.47 ÷ 1000 =
  26. 26.20.81 ÷ 100 =
  27. 27.5.51 × 1000 =
  28. 28.16.55 ÷ 1000 =
  29. 29.44.61 ÷ 100 =
  30. 30.276.9 × 100 =
  31. 31.42.77 × 1000 =
  32. 32.360.3 ÷ 100 =
  33. 33.476.6 × 1000 =
  34. 34.221.5 × 1000 =
  35. 35.0.31 ÷ 1000 =
  36. 36.464.6 × 10 =
  37. 37.5.48 × 1000 =
  38. 38.5.1 ÷ 1000 =
  39. 39.344.9 × 10 =
  40. 40.310.9 ÷ 10 =

Answer key

  1. 4434
  2. 36670
  3. 0.3159
  4. 159
  5. 0.2839
  6. 73100
  7. 3755
  8. 0.00216
  9. 3.805
  10. 425
  11. 0.2993
  12. 40.88
  13. 31.23
  14. 0.00215
  15. 0.2824
  16. 0.00811
  17. 1744
  18. 4714
  19. 1030
  20. 423600
  21. 28170
  22. 10.6
  23. 354400
  24. 0.04771
  25. 0.03447
  26. 0.2081
  27. 5510
  28. 0.01655
  29. 0.4461
  30. 27690
  31. 42770
  32. 3.603
  33. 476600
  34. 221500
  35. 0.00031
  36. 4646
  37. 5480
  38. 0.0051
  39. 3449
  40. 31.09

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