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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 242 · 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. 1.28.06 × 1000 =
  2. 2.27.08 × 100 =
  3. 3.30.9 ÷ 10 =
  4. 4.0.58 × 1000 =
  5. 5.40.19 × 1000 =
  6. 6.373.1 ÷ 100 =
  7. 7.14.07 ÷ 1000 =
  8. 8.155.5 × 100 =
  9. 9.211.6 ÷ 10 =
  10. 10.7.78 × 10 =
  11. 11.470.2 × 100 =
  12. 12.23.01 × 1000 =
  13. 13.25.98 ÷ 10 =
  14. 14.31.99 × 1000 =
  15. 15.13.82 ÷ 10 =
  16. 16.208.1 × 100 =
  17. 17.14.03 × 10 =
  18. 18.3.02 ÷ 100 =
  19. 19.294.9 × 10 =
  20. 20.140.8 × 10 =
  21. 21.45.89 × 1000 =
  22. 22.369.1 ÷ 10 =
  23. 23.196.5 × 100 =
  24. 24.29.78 × 10 =
  25. 25.45.96 × 1000 =
  26. 26.42.21 × 10 =
  27. 27.5.31 ÷ 10 =
  28. 28.1.3 ÷ 1000 =
  29. 29.415.1 × 10 =
  30. 30.109.1 × 100 =
  31. 31.8.23 × 10 =
  32. 32.307.3 × 1000 =
  33. 33.250.4 × 1000 =
  34. 34.89.5 ÷ 10 =
  35. 35.7.4 × 100 =
  36. 36.26.63 × 1000 =
  37. 37.42.51 × 1000 =
  38. 38.357.5 ÷ 100 =
  39. 39.393.7 ÷ 10 =
  40. 40.211.4 ÷ 10 =

Answer key

  1. 28060
  2. 2708
  3. 3.09
  4. 580
  5. 40190
  6. 3.731
  7. 0.01407
  8. 15550
  9. 21.16
  10. 77.8
  11. 47020
  12. 23010
  13. 2.598
  14. 31990
  15. 1.382
  16. 20810
  17. 140.3
  18. 0.0302
  19. 2949
  20. 1408
  21. 45890
  22. 36.91
  23. 19650
  24. 297.8
  25. 45960
  26. 422.1
  27. 0.531
  28. 0.0013
  29. 4151
  30. 10910
  31. 82.3
  32. 307300
  33. 250400
  34. 8.95
  35. 740
  36. 26630
  37. 42510
  38. 3.575
  39. 39.37
  40. 21.14

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