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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 356 · 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. 1.219.3 × 100 =
  2. 2.20.17 ÷ 10 =
  3. 3.9.09 ÷ 1000 =
  4. 4.13.73 ÷ 10 =
  5. 5.13.54 ÷ 10 =
  6. 6.241.1 × 100 =
  7. 7.11.21 × 100 =
  8. 8.318.2 × 10 =
  9. 9.250.4 ÷ 100 =
  10. 10.308.3 ÷ 10 =
  11. 11.20.69 × 10 =
  12. 12.215.7 ÷ 10 =
  13. 13.249.9 ÷ 1000 =
  14. 14.29.97 ÷ 10 =
  15. 15.2.18 × 100 =
  16. 16.29.81 × 1000 =
  17. 17.7.05 × 10 =
  18. 18.1.06 ÷ 1000 =
  19. 19.8.98 ÷ 100 =
  20. 20.10.03 × 10 =
  21. 21.41.77 × 10 =
  22. 22.13.13 × 10 =
  23. 23.45.66 ÷ 1000 =
  24. 24.216.4 × 100 =
  25. 25.237.3 × 10 =
  26. 26.29.79 ÷ 10 =
  27. 27.8.68 ÷ 10 =
  28. 28.404.9 × 100 =
  29. 29.13.71 ÷ 100 =
  30. 30.333.8 × 100 =
  31. 31.22.66 × 1000 =
  32. 32.197.1 × 10 =
  33. 33.20.99 × 100 =
  34. 34.240.1 × 10 =
  35. 35.431.1 ÷ 10 =
  36. 36.26.49 × 1000 =
  37. 37.16.51 × 1000 =
  38. 38.85.3 ÷ 1000 =
  39. 39.245.9 ÷ 10 =
  40. 40.206.7 × 10 =

Answer key

  1. 21930
  2. 2.017
  3. 0.00909
  4. 1.373
  5. 1.354
  6. 24110
  7. 1121
  8. 3182
  9. 2.504
  10. 30.83
  11. 206.9
  12. 21.57
  13. 0.2499
  14. 2.997
  15. 218
  16. 29810
  17. 70.5
  18. 0.00106
  19. 0.0898
  20. 100.3
  21. 417.7
  22. 131.3
  23. 0.04566
  24. 21640
  25. 2373
  26. 2.979
  27. 0.868
  28. 40490
  29. 0.1371
  30. 33380
  31. 22660
  32. 1971
  33. 2099
  34. 2401
  35. 43.11
  36. 26490
  37. 16510
  38. 0.0853
  39. 24.59
  40. 2067

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