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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 378 · 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. 1.35.98 × 10 =
  2. 2.125.1 ÷ 10 =
  3. 3.114.3 × 100 =
  4. 4.160.4 ÷ 10 =
  5. 5.37.47 × 100 =
  6. 6.483.2 ÷ 1000 =
  7. 7.24.12 ÷ 100 =
  8. 8.296.7 × 10 =
  9. 9.46.11 ÷ 1000 =
  10. 10.410.4 ÷ 100 =
  11. 11.85.1 ÷ 1000 =
  12. 12.49.06 × 10 =
  13. 13.18.05 ÷ 1000 =
  14. 14.348.7 ÷ 100 =
  15. 15.458.4 ÷ 100 =
  16. 16.265.4 ÷ 1000 =
  17. 17.207.6 ÷ 1000 =
  18. 18.78.8 ÷ 10 =
  19. 19.281.9 × 100 =
  20. 20.208.7 × 100 =
  21. 21.197.7 × 1000 =
  22. 22.27.97 ÷ 1000 =
  23. 23.12.24 ÷ 100 =
  24. 24.17.52 ÷ 100 =
  25. 25.181.6 ÷ 1000 =
  26. 26.21.1 × 100 =
  27. 27.40.72 × 1000 =
  28. 28.21.27 × 1000 =
  29. 29.3.35 ÷ 100 =
  30. 30.298.2 × 100 =
  31. 31.440.1 × 1000 =
  32. 32.263.6 × 10 =
  33. 33.7.11 ÷ 1000 =
  34. 34.287.4 ÷ 1000 =
  35. 35.51.5 × 1000 =
  36. 36.156.1 ÷ 10 =
  37. 37.472.9 × 10 =
  38. 38.434.1 × 10 =
  39. 39.435.4 ÷ 100 =
  40. 40.39.49 ÷ 1000 =

Answer key

  1. 359.8
  2. 12.51
  3. 11430
  4. 16.04
  5. 3747
  6. 0.4832
  7. 0.2412
  8. 2967
  9. 0.04611
  10. 4.104
  11. 0.0851
  12. 490.6
  13. 0.01805
  14. 3.487
  15. 4.584
  16. 0.2654
  17. 0.2076
  18. 7.88
  19. 28190
  20. 20870
  21. 197700
  22. 0.02797
  23. 0.1224
  24. 0.1752
  25. 0.1816
  26. 2110
  27. 40720
  28. 21270
  29. 0.0335
  30. 29820
  31. 440100
  32. 2636
  33. 0.00711
  34. 0.2874
  35. 51500
  36. 15.61
  37. 4729
  38. 4341
  39. 4.354
  40. 0.03949

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