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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 484 · 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. 1.71.6 ÷ 100 =
  2. 2.249.2 × 100 =
  3. 3.205.4 × 1000 =
  4. 4.329.4 ÷ 100 =
  5. 5.46.1 ÷ 100 =
  6. 6.196.1 ÷ 1000 =
  7. 7.6.07 × 1000 =
  8. 8.19.2 × 100 =
  9. 9.385.1 × 1000 =
  10. 10.333.1 × 100 =
  11. 11.25.46 × 10 =
  12. 12.178.8 × 100 =
  13. 13.35.6 ÷ 10 =
  14. 14.469.4 × 1000 =
  15. 15.54.9 × 100 =
  16. 16.259.1 ÷ 1000 =
  17. 17.33.09 × 100 =
  18. 18.38.86 × 100 =
  19. 19.68.3 ÷ 100 =
  20. 20.394.4 × 100 =
  21. 21.43.69 × 100 =
  22. 22.31.69 × 10 =
  23. 23.20.35 × 1000 =
  24. 24.321.3 × 1000 =
  25. 25.32.31 × 1000 =
  26. 26.262.3 ÷ 100 =
  27. 27.9.04 ÷ 100 =
  28. 28.312.2 ÷ 100 =
  29. 29.207.9 × 1000 =
  30. 30.216.5 ÷ 1000 =
  31. 31.39.91 × 1000 =
  32. 32.9.62 ÷ 1000 =
  33. 33.338.4 ÷ 1000 =
  34. 34.399.5 × 100 =
  35. 35.85.2 ÷ 100 =
  36. 36.27.01 ÷ 1000 =
  37. 37.12.85 × 10 =
  38. 38.427.8 × 1000 =
  39. 39.238.2 ÷ 10 =
  40. 40.26.06 ÷ 10 =

Answer key

  1. 0.716
  2. 24920
  3. 205400
  4. 3.294
  5. 0.461
  6. 0.1961
  7. 6070
  8. 1920
  9. 385100
  10. 33310
  11. 254.6
  12. 17880
  13. 3.56
  14. 469400
  15. 5490
  16. 0.2591
  17. 3309
  18. 3886
  19. 0.683
  20. 39440
  21. 4369
  22. 316.9
  23. 20350
  24. 321300
  25. 32310
  26. 2.623
  27. 0.0904
  28. 3.122
  29. 207900
  30. 0.2165
  31. 39910
  32. 0.00962
  33. 0.3384
  34. 39950
  35. 0.852
  36. 0.02701
  37. 128.5
  38. 427800
  39. 23.82
  40. 2.606

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