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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 408 · 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. 1.29.95 × 10 =
  2. 2.387.3 × 10 =
  3. 3.498.1 × 10 =
  4. 4.101.4 × 1000 =
  5. 5.1.42 ÷ 10 =
  6. 6.349.1 ÷ 1000 =
  7. 7.47.11 × 10 =
  8. 8.30.66 ÷ 10 =
  9. 9.27.28 ÷ 1000 =
  10. 10.138.6 ÷ 10 =
  11. 11.115.5 ÷ 1000 =
  12. 12.37.33 × 1000 =
  13. 13.381.7 ÷ 10 =
  14. 14.47.95 × 1000 =
  15. 15.36.02 ÷ 10 =
  16. 16.9.76 × 1000 =
  17. 17.25.41 × 1000 =
  18. 18.307.1 × 10 =
  19. 19.16.78 ÷ 100 =
  20. 20.46.51 × 100 =
  21. 21.5.08 × 10 =
  22. 22.492.3 × 1000 =
  23. 23.0.17 ÷ 10 =
  24. 24.284.3 × 100 =
  25. 25.46.54 × 1000 =
  26. 26.30.23 × 100 =
  27. 27.17.14 × 100 =
  28. 28.78.7 × 1000 =
  29. 29.30.31 ÷ 100 =
  30. 30.20.65 × 1000 =
  31. 31.38.87 × 100 =
  32. 32.305.1 × 10 =
  33. 33.107.2 ÷ 100 =
  34. 34.25.47 × 1000 =
  35. 35.45.84 ÷ 1000 =
  36. 36.111.9 × 10 =
  37. 37.46.84 × 100 =
  38. 38.11.5 ÷ 10 =
  39. 39.23.46 × 10 =
  40. 40.306.4 ÷ 10 =

Answer key

  1. 299.5
  2. 3873
  3. 4981
  4. 101400
  5. 0.142
  6. 0.3491
  7. 471.1
  8. 3.066
  9. 0.02728
  10. 13.86
  11. 0.1155
  12. 37330
  13. 38.17
  14. 47950
  15. 3.602
  16. 9760
  17. 25410
  18. 3071
  19. 0.1678
  20. 4651
  21. 50.8
  22. 492300
  23. 0.017
  24. 28430
  25. 46540
  26. 3023
  27. 1714
  28. 78700
  29. 0.3031
  30. 20650
  31. 3887
  32. 3051
  33. 1.072
  34. 25470
  35. 0.04584
  36. 1119
  37. 4684
  38. 1.15
  39. 234.6
  40. 30.64

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