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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 225 · 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. 1.39.67 × 10 =
  2. 2.15.02 × 1000 =
  3. 3.35.67 ÷ 10 =
  4. 4.153.6 × 10 =
  5. 5.135.1 ÷ 100 =
  6. 6.65.4 × 10 =
  7. 7.453.1 × 10 =
  8. 8.381.2 × 100 =
  9. 9.454.5 ÷ 10 =
  10. 10.1.96 × 10 =
  11. 11.198.1 × 100 =
  12. 12.12.94 × 10 =
  13. 13.21.88 × 1000 =
  14. 14.13.31 ÷ 1000 =
  15. 15.4.14 × 1000 =
  16. 16.35.91 ÷ 100 =
  17. 17.42.87 × 1000 =
  18. 18.469.7 ÷ 1000 =
  19. 19.345.6 ÷ 1000 =
  20. 20.348.2 ÷ 10 =
  21. 21.48.21 ÷ 1000 =
  22. 22.442.6 ÷ 10 =
  23. 23.452.4 × 10 =
  24. 24.99.2 × 100 =
  25. 25.22.64 × 1000 =
  26. 26.18.08 × 1000 =
  27. 27.11.89 × 1000 =
  28. 28.298.5 × 100 =
  29. 29.109.5 ÷ 10 =
  30. 30.46.06 × 1000 =
  31. 31.5.52 × 100 =
  32. 32.328.9 × 100 =
  33. 33.44.73 × 1000 =
  34. 34.46.51 × 10 =
  35. 35.95.4 × 1000 =
  36. 36.129.2 ÷ 10 =
  37. 37.36.66 ÷ 1000 =
  38. 38.16.95 × 10 =
  39. 39.30.61 ÷ 10 =
  40. 40.307.3 × 1000 =

Answer key

  1. 396.7
  2. 15020
  3. 3.567
  4. 1536
  5. 1.351
  6. 654
  7. 4531
  8. 38120
  9. 45.45
  10. 19.6
  11. 19810
  12. 129.4
  13. 21880
  14. 0.01331
  15. 4140
  16. 0.3591
  17. 42870
  18. 0.4697
  19. 0.3456
  20. 34.82
  21. 0.04821
  22. 44.26
  23. 4524
  24. 9920
  25. 22640
  26. 18080
  27. 11890
  28. 29850
  29. 10.95
  30. 46060
  31. 552
  32. 32890
  33. 44730
  34. 465.1
  35. 95400
  36. 12.92
  37. 0.03666
  38. 169.5
  39. 3.061
  40. 307300

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