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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 876 · 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. 1.93.1 × 100 =
  2. 2.431.6 × 10 =
  3. 3.46.15 × 10 =
  4. 4.31.62 ÷ 10 =
  5. 5.17.34 × 100 =
  6. 6.466.7 ÷ 1000 =
  7. 7.320.8 ÷ 1000 =
  8. 8.24.84 ÷ 100 =
  9. 9.32.91 ÷ 1000 =
  10. 10.345.3 × 10 =
  11. 11.59.7 ÷ 100 =
  12. 12.324.2 × 1000 =
  13. 13.26.43 ÷ 100 =
  14. 14.20.82 × 1000 =
  15. 15.16.18 × 10 =
  16. 16.19.22 × 1000 =
  17. 17.302.2 ÷ 100 =
  18. 18.384.1 × 100 =
  19. 19.11.86 ÷ 1000 =
  20. 20.8.56 × 10 =
  21. 21.26.65 × 1000 =
  22. 22.30.52 ÷ 100 =
  23. 23.19.97 × 100 =
  24. 24.165.3 × 10 =
  25. 25.14.77 ÷ 10 =
  26. 26.2.2 ÷ 10 =
  27. 27.200.4 × 10 =
  28. 28.467.8 × 1000 =
  29. 29.34.04 ÷ 10 =
  30. 30.464.1 × 10 =
  31. 31.388.4 ÷ 10 =
  32. 32.185.5 × 10 =
  33. 33.1.74 ÷ 10 =
  34. 34.8.09 ÷ 100 =
  35. 35.55.4 ÷ 1000 =
  36. 36.37.34 × 1000 =
  37. 37.409.9 ÷ 10 =
  38. 38.438.5 × 1000 =
  39. 39.1.3 × 1000 =
  40. 40.12.68 × 1000 =

Answer key

  1. 9310
  2. 4316
  3. 461.5
  4. 3.162
  5. 1734
  6. 0.4667
  7. 0.3208
  8. 0.2484
  9. 0.03291
  10. 3453
  11. 0.597
  12. 324200
  13. 0.2643
  14. 20820
  15. 161.8
  16. 19220
  17. 3.022
  18. 38410
  19. 0.01186
  20. 85.6
  21. 26650
  22. 0.3052
  23. 1997
  24. 1653
  25. 1.477
  26. 0.22
  27. 2004
  28. 467800
  29. 3.404
  30. 4641
  31. 38.84
  32. 1855
  33. 0.174
  34. 0.0809
  35. 0.0554
  36. 37340
  37. 40.99
  38. 438500
  39. 1300
  40. 12680

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