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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 332 · 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. 1.119.9 ÷ 10 =
  2. 2.334.1 ÷ 100 =
  3. 3.9.9 ÷ 100 =
  4. 4.41.75 ÷ 10 =
  5. 5.32.58 × 10 =
  6. 6.175.3 × 10 =
  7. 7.41.11 × 10 =
  8. 8.10.76 ÷ 10 =
  9. 9.23.71 × 100 =
  10. 10.164.1 × 100 =
  11. 11.274.1 × 10 =
  12. 12.18.94 × 10 =
  13. 13.118.1 × 100 =
  14. 14.47.4 × 1000 =
  15. 15.292.2 × 100 =
  16. 16.440.5 × 100 =
  17. 17.43.62 ÷ 100 =
  18. 18.44.08 × 10 =
  19. 19.16.28 ÷ 10 =
  20. 20.14.63 ÷ 100 =
  21. 21.270.5 × 100 =
  22. 22.51.1 ÷ 10 =
  23. 23.27.94 ÷ 10 =
  24. 24.129.6 × 100 =
  25. 25.39.01 ÷ 1000 =
  26. 26.406.4 × 10 =
  27. 27.22.1 × 100 =
  28. 28.31.31 ÷ 100 =
  29. 29.38.72 × 100 =
  30. 30.2.25 ÷ 1000 =
  31. 31.427.3 ÷ 10 =
  32. 32.175.3 × 10 =
  33. 33.496.5 ÷ 100 =
  34. 34.192.3 × 100 =
  35. 35.287.1 × 100 =
  36. 36.5.08 ÷ 10 =
  37. 37.49.6 × 10 =
  38. 38.41.43 ÷ 100 =
  39. 39.13.93 ÷ 1000 =
  40. 40.40.96 ÷ 100 =

Answer key

  1. 11.99
  2. 3.341
  3. 0.099
  4. 4.175
  5. 325.8
  6. 1753
  7. 411.1
  8. 1.076
  9. 2371
  10. 16410
  11. 2741
  12. 189.4
  13. 11810
  14. 47400
  15. 29220
  16. 44050
  17. 0.4362
  18. 440.8
  19. 1.628
  20. 0.1463
  21. 27050
  22. 5.11
  23. 2.794
  24. 12960
  25. 0.03901
  26. 4064
  27. 2210
  28. 0.3131
  29. 3872
  30. 0.00225
  31. 42.73
  32. 1753
  33. 4.965
  34. 19230
  35. 28710
  36. 0.508
  37. 496
  38. 0.4143
  39. 0.01393
  40. 0.4096

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