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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 22 · 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. 1.15.63 ÷ 1000 =
  2. 2.3.48 × 100 =
  3. 3.432.6 ÷ 1000 =
  4. 4.38.42 × 10 =
  5. 5.270.7 ÷ 1000 =
  6. 6.14.52 × 1000 =
  7. 7.28.3 ÷ 100 =
  8. 8.30.84 × 1000 =
  9. 9.19.49 × 100 =
  10. 10.26.11 × 100 =
  11. 11.32.7 ÷ 10 =
  12. 12.2.2 × 10 =
  13. 13.203.1 ÷ 100 =
  14. 14.5.77 × 100 =
  15. 15.456.1 ÷ 10 =
  16. 16.408.9 × 1000 =
  17. 17.41.47 ÷ 10 =
  18. 18.10.21 ÷ 10 =
  19. 19.32.4 × 100 =
  20. 20.158.1 × 1000 =
  21. 21.208.9 × 10 =
  22. 22.18.64 ÷ 100 =
  23. 23.18.5 ÷ 10 =
  24. 24.45.57 × 100 =
  25. 25.31.54 ÷ 100 =
  26. 26.20.21 ÷ 10 =
  27. 27.150.4 × 100 =
  28. 28.29.63 × 1000 =
  29. 29.265.9 ÷ 100 =
  30. 30.6.11 ÷ 100 =
  31. 31.466.9 × 10 =
  32. 32.408.1 × 1000 =
  33. 33.24.4 × 100 =
  34. 34.44.62 ÷ 1000 =
  35. 35.489.7 × 10 =
  36. 36.8.7 ÷ 10 =
  37. 37.4.85 × 10 =
  38. 38.105.2 ÷ 1000 =
  39. 39.54.9 × 10 =
  40. 40.240.4 × 100 =

Answer key

  1. 0.01563
  2. 348
  3. 0.4326
  4. 384.2
  5. 0.2707
  6. 14520
  7. 0.283
  8. 30840
  9. 1949
  10. 2611
  11. 3.27
  12. 22
  13. 2.031
  14. 577
  15. 45.61
  16. 408900
  17. 4.147
  18. 1.021
  19. 3240
  20. 158100
  21. 2089
  22. 0.1864
  23. 1.85
  24. 4557
  25. 0.3154
  26. 2.021
  27. 15040
  28. 29630
  29. 2.659
  30. 0.0611
  31. 4669
  32. 408100
  33. 2440
  34. 0.04462
  35. 4897
  36. 0.87
  37. 48.5
  38. 0.1052
  39. 549
  40. 24040

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