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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 1 · 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. 1.452.9 × 100 =
  2. 2.410.5 × 10 =
  3. 3.22.45 × 100 =
  4. 4.306.3 ÷ 1000 =
  5. 5.79.1 ÷ 1000 =
  6. 6.10.31 ÷ 1000 =
  7. 7.21.69 × 100 =
  8. 8.491.6 ÷ 1000 =
  9. 9.156.7 ÷ 10 =
  10. 10.481.1 ÷ 1000 =
  11. 11.32.33 × 10 =
  12. 12.434.7 ÷ 10 =
  13. 13.78.2 × 1000 =
  14. 14.17.35 × 10 =
  15. 15.130.9 ÷ 1000 =
  16. 16.127.5 × 100 =
  17. 17.10.1 × 10 =
  18. 18.24.59 ÷ 10 =
  19. 19.17.09 ÷ 10 =
  20. 20.46.97 × 10 =
  21. 21.170.3 ÷ 10 =
  22. 22.206.9 ÷ 1000 =
  23. 23.168.8 × 100 =
  24. 24.325.3 × 100 =
  25. 25.216.2 × 10 =
  26. 26.484.4 ÷ 100 =
  27. 27.107.8 ÷ 10 =
  28. 28.481.5 ÷ 1000 =
  29. 29.69.4 × 1000 =
  30. 30.7.35 ÷ 1000 =
  31. 31.100.8 × 10 =
  32. 32.13.45 ÷ 10 =
  33. 33.42.12 ÷ 1000 =
  34. 34.229.1 ÷ 1000 =
  35. 35.4.82 × 100 =
  36. 36.68.8 ÷ 10 =
  37. 37.466.6 × 100 =
  38. 38.318.1 × 100 =
  39. 39.18.57 × 1000 =
  40. 40.1.72 × 1000 =

Answer key

  1. 45290
  2. 4105
  3. 2245
  4. 0.3063
  5. 0.0791
  6. 0.01031
  7. 2169
  8. 0.4916
  9. 15.67
  10. 0.4811
  11. 323.3
  12. 43.47
  13. 78200
  14. 173.5
  15. 0.1309
  16. 12750
  17. 101
  18. 2.459
  19. 1.709
  20. 469.7
  21. 17.03
  22. 0.2069
  23. 16880
  24. 32530
  25. 2162
  26. 4.844
  27. 10.78
  28. 0.4815
  29. 69400
  30. 0.00735
  31. 1008
  32. 1.345
  33. 0.04212
  34. 0.2291
  35. 482
  36. 6.88
  37. 46660
  38. 31810
  39. 18570
  40. 1720

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