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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 251 · 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. 1.3.14 ÷ 1000 =
  2. 2.4.25 × 10 =
  3. 3.7.97 ÷ 10 =
  4. 4.304.3 × 1000 =
  5. 5.289.1 × 100 =
  6. 6.251.9 ÷ 100 =
  7. 7.47.02 ÷ 1000 =
  8. 8.254.9 × 10 =
  9. 9.400.7 × 10 =
  10. 10.140.8 × 100 =
  11. 11.7.91 × 10 =
  12. 12.71.1 × 100 =
  13. 13.15.92 × 1000 =
  14. 14.108.6 × 10 =
  15. 15.388.2 × 100 =
  16. 16.272.5 ÷ 10 =
  17. 17.120.9 ÷ 1000 =
  18. 18.34.91 × 1000 =
  19. 19.0.13 × 100 =
  20. 20.4.07 × 100 =
  21. 21.42.59 × 10 =
  22. 22.357.3 × 10 =
  23. 23.78.2 ÷ 100 =
  24. 24.28.05 ÷ 100 =
  25. 25.8.18 ÷ 10 =
  26. 26.213.5 × 100 =
  27. 27.12.61 ÷ 1000 =
  28. 28.46.9 ÷ 10 =
  29. 29.494.9 × 1000 =
  30. 30.35.44 ÷ 10 =
  31. 31.312.9 × 1000 =
  32. 32.25.42 × 1000 =
  33. 33.144.9 ÷ 10 =
  34. 34.69.7 ÷ 100 =
  35. 35.282.6 × 10 =
  36. 36.23.76 ÷ 10 =
  37. 37.2.85 × 100 =
  38. 38.217.5 × 1000 =
  39. 39.58.5 ÷ 1000 =
  40. 40.226.1 ÷ 10 =

Answer key

  1. 0.00314
  2. 42.5
  3. 0.797
  4. 304300
  5. 28910
  6. 2.519
  7. 0.04702
  8. 2549
  9. 4007
  10. 14080
  11. 79.1
  12. 7110
  13. 15920
  14. 1086
  15. 38820
  16. 27.25
  17. 0.1209
  18. 34910
  19. 13
  20. 407
  21. 425.9
  22. 3573
  23. 0.782
  24. 0.2805
  25. 0.818
  26. 21350
  27. 0.01261
  28. 4.69
  29. 494900
  30. 3.544
  31. 312900
  32. 25420
  33. 14.49
  34. 0.697
  35. 2826
  36. 2.376
  37. 285
  38. 217500
  39. 0.0585
  40. 22.61

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