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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 635 · 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. 1.32.31 × 1000 =
  2. 2.242.9 ÷ 1000 =
  3. 3.9.41 × 100 =
  4. 4.47.58 ÷ 1000 =
  5. 5.22.45 × 100 =
  6. 6.38.14 ÷ 10 =
  7. 7.42.47 × 10 =
  8. 8.320.6 ÷ 1000 =
  9. 9.183.7 ÷ 1000 =
  10. 10.22.07 ÷ 10 =
  11. 11.49.41 ÷ 10 =
  12. 12.42.44 ÷ 10 =
  13. 13.5.68 ÷ 10 =
  14. 14.66.1 × 10 =
  15. 15.169.2 × 10 =
  16. 16.218.6 ÷ 10 =
  17. 17.2.69 ÷ 10 =
  18. 18.57.9 ÷ 100 =
  19. 19.42.78 × 1000 =
  20. 20.18.24 × 10 =
  21. 21.36.38 ÷ 1000 =
  22. 22.472.4 × 1000 =
  23. 23.34.25 ÷ 100 =
  24. 24.307.6 ÷ 10 =
  25. 25.275.6 ÷ 10 =
  26. 26.13.93 ÷ 10 =
  27. 27.24.28 × 10 =
  28. 28.142.1 ÷ 1000 =
  29. 29.48.37 × 1000 =
  30. 30.20.57 × 100 =
  31. 31.256.1 × 1000 =
  32. 32.10.21 ÷ 100 =
  33. 33.1.75 × 1000 =
  34. 34.489.7 ÷ 100 =
  35. 35.167.5 × 100 =
  36. 36.6.01 × 10 =
  37. 37.370.3 × 1000 =
  38. 38.25.31 ÷ 10 =
  39. 39.2.85 ÷ 1000 =
  40. 40.32.06 ÷ 10 =

Answer key

  1. 32310
  2. 0.2429
  3. 941
  4. 0.04758
  5. 2245
  6. 3.814
  7. 424.7
  8. 0.3206
  9. 0.1837
  10. 2.207
  11. 4.941
  12. 4.244
  13. 0.568
  14. 661
  15. 1692
  16. 21.86
  17. 0.269
  18. 0.579
  19. 42780
  20. 182.4
  21. 0.03638
  22. 472400
  23. 0.3425
  24. 30.76
  25. 27.56
  26. 1.393
  27. 242.8
  28. 0.1421
  29. 48370
  30. 2057
  31. 256100
  32. 0.1021
  33. 1750
  34. 4.897
  35. 16750
  36. 60.1
  37. 370300
  38. 2.531
  39. 0.00285
  40. 3.206

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