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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 498 · 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. 1.240.6 ÷ 10 =
  2. 2.4.15 ÷ 100 =
  3. 3.8.15 ÷ 1000 =
  4. 4.144.6 × 10 =
  5. 5.4.4 × 1000 =
  6. 6.22.41 × 10 =
  7. 7.18.11 × 100 =
  8. 8.43.25 × 10 =
  9. 9.338.4 ÷ 100 =
  10. 10.31.95 × 100 =
  11. 11.46.89 ÷ 10 =
  12. 12.42.57 × 10 =
  13. 13.11.45 ÷ 1000 =
  14. 14.45.22 ÷ 100 =
  15. 15.21.21 × 100 =
  16. 16.25.96 ÷ 10 =
  17. 17.10.4 × 100 =
  18. 18.35.91 × 1000 =
  19. 19.164.1 × 10 =
  20. 20.117.3 ÷ 10 =
  21. 21.10.21 × 1000 =
  22. 22.31.47 × 10 =
  23. 23.2.11 × 1000 =
  24. 24.353.7 × 1000 =
  25. 25.227.3 × 100 =
  26. 26.9.68 ÷ 100 =
  27. 27.256.8 × 100 =
  28. 28.450.1 ÷ 1000 =
  29. 29.239.4 ÷ 100 =
  30. 30.20.25 ÷ 1000 =
  31. 31.47.65 ÷ 100 =
  32. 32.35.8 ÷ 10 =
  33. 33.7.52 × 10 =
  34. 34.24.94 × 10 =
  35. 35.465.3 × 10 =
  36. 36.25.61 ÷ 100 =
  37. 37.41.19 ÷ 100 =
  38. 38.0.31 ÷ 1000 =
  39. 39.19.73 × 100 =
  40. 40.32.03 × 10 =

Answer key

  1. 24.06
  2. 0.0415
  3. 0.00815
  4. 1446
  5. 4400
  6. 224.1
  7. 1811
  8. 432.5
  9. 3.384
  10. 3195
  11. 4.689
  12. 425.7
  13. 0.01145
  14. 0.4522
  15. 2121
  16. 2.596
  17. 1040
  18. 35910
  19. 1641
  20. 11.73
  21. 10210
  22. 314.7
  23. 2110
  24. 353700
  25. 22730
  26. 0.0968
  27. 25680
  28. 0.4501
  29. 2.394
  30. 0.02025
  31. 0.4765
  32. 3.58
  33. 75.2
  34. 249.4
  35. 4653
  36. 0.2561
  37. 0.4119
  38. 0.00031
  39. 1973
  40. 320.3

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