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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 879 · 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. 1.14.11 ÷ 10 =
  2. 2.46.47 ÷ 10 =
  3. 3.43.94 ÷ 100 =
  4. 4.221.1 ÷ 10 =
  5. 5.367.5 ÷ 1000 =
  6. 6.11.8 ÷ 100 =
  7. 7.183.5 ÷ 100 =
  8. 8.1.27 × 100 =
  9. 9.40.79 ÷ 100 =
  10. 10.332.2 ÷ 100 =
  11. 11.48.37 × 10 =
  12. 12.5.72 × 10 =
  13. 13.70.2 × 10 =
  14. 14.19.19 × 10 =
  15. 15.29.4 ÷ 10 =
  16. 16.283.4 × 1000 =
  17. 17.9.51 ÷ 10 =
  18. 18.489.1 ÷ 10 =
  19. 19.22.21 ÷ 1000 =
  20. 20.417.2 × 10 =
  21. 21.227.4 × 10 =
  22. 22.27.66 × 10 =
  23. 23.291.1 × 1000 =
  24. 24.44.37 × 1000 =
  25. 25.222.2 × 100 =
  26. 26.218.1 ÷ 10 =
  27. 27.176.1 × 100 =
  28. 28.36.03 ÷ 1000 =
  29. 29.4.97 ÷ 1000 =
  30. 30.47.3 ÷ 10 =
  31. 31.269.7 × 100 =
  32. 32.59.9 ÷ 10 =
  33. 33.0.77 × 100 =
  34. 34.18.24 × 1000 =
  35. 35.8.5 ÷ 10 =
  36. 36.92.9 ÷ 10 =
  37. 37.24.45 × 1000 =
  38. 38.1.69 ÷ 1000 =
  39. 39.40.44 × 10 =
  40. 40.111.3 ÷ 100 =

Answer key

  1. 1.411
  2. 4.647
  3. 0.4394
  4. 22.11
  5. 0.3675
  6. 0.118
  7. 1.835
  8. 127
  9. 0.4079
  10. 3.322
  11. 483.7
  12. 57.2
  13. 702
  14. 191.9
  15. 2.94
  16. 283400
  17. 0.951
  18. 48.91
  19. 0.02221
  20. 4172
  21. 2274
  22. 276.6
  23. 291100
  24. 44370
  25. 22220
  26. 21.81
  27. 17610
  28. 0.03603
  29. 0.00497
  30. 4.73
  31. 26970
  32. 5.99
  33. 77
  34. 18240
  35. 0.85
  36. 9.29
  37. 24450
  38. 0.00169
  39. 404.4
  40. 1.113

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