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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 180 · 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. 1.188.8 ÷ 100 =
  2. 2.26.98 ÷ 100 =
  3. 3.162.9 ÷ 1000 =
  4. 4.144.1 × 100 =
  5. 5.231.1 × 10 =
  6. 6.34.55 ÷ 10 =
  7. 7.17.21 × 100 =
  8. 8.361.3 ÷ 10 =
  9. 9.312.4 ÷ 1000 =
  10. 10.366.1 × 100 =
  11. 11.3.54 ÷ 1000 =
  12. 12.423.1 × 1000 =
  13. 13.318.3 ÷ 10 =
  14. 14.284.7 × 1000 =
  15. 15.28.46 × 1000 =
  16. 16.6.8 × 100 =
  17. 17.292.2 ÷ 10 =
  18. 18.41.83 ÷ 1000 =
  19. 19.235.1 ÷ 100 =
  20. 20.14.98 ÷ 100 =
  21. 21.4.57 × 1000 =
  22. 22.42.93 ÷ 10 =
  23. 23.9.87 × 1000 =
  24. 24.274.9 × 10 =
  25. 25.332.1 × 1000 =
  26. 26.447.1 × 1000 =
  27. 27.340.6 × 1000 =
  28. 28.37.4 × 100 =
  29. 29.34.91 × 10 =
  30. 30.31.34 × 10 =
  31. 31.303.9 ÷ 10 =
  32. 32.396.1 ÷ 1000 =
  33. 33.47.98 ÷ 10 =
  34. 34.186.1 × 10 =
  35. 35.148.1 × 100 =
  36. 36.4.66 × 1000 =
  37. 37.158.1 × 1000 =
  38. 38.34.77 ÷ 100 =
  39. 39.470.1 ÷ 1000 =
  40. 40.7.68 × 10 =

Answer key

  1. 1.888
  2. 0.2698
  3. 0.1629
  4. 14410
  5. 2311
  6. 3.455
  7. 1721
  8. 36.13
  9. 0.3124
  10. 36610
  11. 0.00354
  12. 423100
  13. 31.83
  14. 284700
  15. 28460
  16. 680
  17. 29.22
  18. 0.04183
  19. 2.351
  20. 0.1498
  21. 4570
  22. 4.293
  23. 9870
  24. 2749
  25. 332100
  26. 447100
  27. 340600
  28. 3740
  29. 349.1
  30. 313.4
  31. 30.39
  32. 0.3961
  33. 4.798
  34. 1861
  35. 14810
  36. 4660
  37. 158100
  38. 0.3477
  39. 0.4701
  40. 76.8

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