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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 314 · 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. 1.10.81 × 10 =
  2. 2.31.15 ÷ 1000 =
  3. 3.448.6 × 100 =
  4. 4.32.62 ÷ 10 =
  5. 5.496.8 ÷ 100 =
  6. 6.39.49 × 100 =
  7. 7.43.21 ÷ 100 =
  8. 8.18.37 ÷ 10 =
  9. 9.34.28 ÷ 1000 =
  10. 10.21.34 × 10 =
  11. 11.47.68 × 10 =
  12. 12.3.75 ÷ 10 =
  13. 13.29.25 × 1000 =
  14. 14.330.3 ÷ 1000 =
  15. 15.474.3 × 1000 =
  16. 16.164.1 × 1000 =
  17. 17.49.86 × 10 =
  18. 18.44.33 × 10 =
  19. 19.80.9 ÷ 1000 =
  20. 20.48.73 × 1000 =
  21. 21.400.9 ÷ 10 =
  22. 22.22.3 × 100 =
  23. 23.4.1 ÷ 1000 =
  24. 24.387.3 × 100 =
  25. 25.34.38 ÷ 10 =
  26. 26.241.1 ÷ 1000 =
  27. 27.23.23 × 1000 =
  28. 28.17.54 × 10 =
  29. 29.340.8 ÷ 100 =
  30. 30.444.8 ÷ 1000 =
  31. 31.31.84 × 10 =
  32. 32.136.9 ÷ 10 =
  33. 33.451.3 × 1000 =
  34. 34.220.6 ÷ 100 =
  35. 35.198.8 × 10 =
  36. 36.19.28 × 1000 =
  37. 37.45.8 ÷ 100 =
  38. 38.33.39 ÷ 100 =
  39. 39.25.99 × 10 =
  40. 40.26.58 ÷ 100 =

Answer key

  1. 108.1
  2. 0.03115
  3. 44860
  4. 3.262
  5. 4.968
  6. 3949
  7. 0.4321
  8. 1.837
  9. 0.03428
  10. 213.4
  11. 476.8
  12. 0.375
  13. 29250
  14. 0.3303
  15. 474300
  16. 164100
  17. 498.6
  18. 443.3
  19. 0.0809
  20. 48730
  21. 40.09
  22. 2230
  23. 0.0041
  24. 38730
  25. 3.438
  26. 0.2411
  27. 23230
  28. 175.4
  29. 3.408
  30. 0.4448
  31. 318.4
  32. 13.69
  33. 451300
  34. 2.206
  35. 1988
  36. 19280
  37. 0.458
  38. 0.3339
  39. 259.9
  40. 0.2658

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