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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 296 · 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. 1.9.14 ÷ 100 =
  2. 2.434.6 ÷ 100 =
  3. 3.413.8 × 10 =
  4. 4.21.46 ÷ 10 =
  5. 5.88.5 ÷ 10 =
  6. 6.6.25 × 10 =
  7. 7.127.9 ÷ 1000 =
  8. 8.426.4 ÷ 10 =
  9. 9.29.71 ÷ 100 =
  10. 10.411.4 × 1000 =
  11. 11.35.44 ÷ 10 =
  12. 12.17.73 × 1000 =
  13. 13.6.52 × 100 =
  14. 14.156.2 ÷ 10 =
  15. 15.9.15 ÷ 1000 =
  16. 16.415.5 × 10 =
  17. 17.35.4 ÷ 10 =
  18. 18.403.8 ÷ 10 =
  19. 19.472.9 ÷ 1000 =
  20. 20.33.9 × 100 =
  21. 21.230.1 × 1000 =
  22. 22.38.21 ÷ 1000 =
  23. 23.40.04 × 1000 =
  24. 24.259.7 ÷ 10 =
  25. 25.174.6 × 100 =
  26. 26.269.6 ÷ 10 =
  27. 27.49.61 × 10 =
  28. 28.49.69 × 10 =
  29. 29.25.64 ÷ 1000 =
  30. 30.445.8 ÷ 100 =
  31. 31.468.6 ÷ 10 =
  32. 32.37.22 × 1000 =
  33. 33.439.6 ÷ 10 =
  34. 34.112.1 × 100 =
  35. 35.42.39 ÷ 10 =
  36. 36.15.72 ÷ 1000 =
  37. 37.392.8 ÷ 100 =
  38. 38.184.5 ÷ 1000 =
  39. 39.477.1 ÷ 1000 =
  40. 40.40.97 ÷ 1000 =

Answer key

  1. 0.0914
  2. 4.346
  3. 4138
  4. 2.146
  5. 8.85
  6. 62.5
  7. 0.1279
  8. 42.64
  9. 0.2971
  10. 411400
  11. 3.544
  12. 17730
  13. 652
  14. 15.62
  15. 0.00915
  16. 4155
  17. 3.54
  18. 40.38
  19. 0.4729
  20. 3390
  21. 230100
  22. 0.03821
  23. 40040
  24. 25.97
  25. 17460
  26. 26.96
  27. 496.1
  28. 496.9
  29. 0.02564
  30. 4.458
  31. 46.86
  32. 37220
  33. 43.96
  34. 11210
  35. 4.239
  36. 0.01572
  37. 3.928
  38. 0.1845
  39. 0.4771
  40. 0.04097

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