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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 236 · 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. 1.8.2 × 1000 =
  2. 2.23.72 × 1000 =
  3. 3.10.34 ÷ 10 =
  4. 4.135.1 × 10 =
  5. 5.37.9 × 100 =
  6. 6.23.07 × 1000 =
  7. 7.471.9 ÷ 100 =
  8. 8.326.6 × 10 =
  9. 9.27.71 × 1000 =
  10. 10.20.9 ÷ 1000 =
  11. 11.45.87 × 1000 =
  12. 12.258.4 × 100 =
  13. 13.1.06 ÷ 100 =
  14. 14.78.6 × 10 =
  15. 15.11.04 × 10 =
  16. 16.37.28 ÷ 100 =
  17. 17.24.25 × 1000 =
  18. 18.28.81 × 100 =
  19. 19.4.21 ÷ 1000 =
  20. 20.31.82 ÷ 1000 =
  21. 21.47.89 × 1000 =
  22. 22.164.6 × 100 =
  23. 23.179.3 ÷ 10 =
  24. 24.164.2 ÷ 100 =
  25. 25.405.2 ÷ 1000 =
  26. 26.253.1 ÷ 100 =
  27. 27.51.2 ÷ 1000 =
  28. 28.39.28 × 1000 =
  29. 29.27.32 × 10 =
  30. 30.111.1 ÷ 1000 =
  31. 31.63.7 × 1000 =
  32. 32.41.15 × 1000 =
  33. 33.44.54 × 10 =
  34. 34.13.4 × 10 =
  35. 35.26.65 ÷ 10 =
  36. 36.18.81 × 1000 =
  37. 37.76.1 ÷ 1000 =
  38. 38.265.5 × 10 =
  39. 39.282.5 × 10 =
  40. 40.152.3 × 10 =

Answer key

  1. 8200
  2. 23720
  3. 1.034
  4. 1351
  5. 3790
  6. 23070
  7. 4.719
  8. 3266
  9. 27710
  10. 0.0209
  11. 45870
  12. 25840
  13. 0.0106
  14. 786
  15. 110.4
  16. 0.3728
  17. 24250
  18. 2881
  19. 0.00421
  20. 0.03182
  21. 47890
  22. 16460
  23. 17.93
  24. 1.642
  25. 0.4052
  26. 2.531
  27. 0.0512
  28. 39280
  29. 273.2
  30. 0.1111
  31. 63700
  32. 41150
  33. 445.4
  34. 134
  35. 2.665
  36. 18810
  37. 0.0761
  38. 2655
  39. 2825
  40. 1523

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