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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 511 · 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. 1.41.39 × 10 =
  2. 2.12.5 ÷ 10 =
  3. 3.47.07 × 100 =
  4. 4.16.81 × 100 =
  5. 5.11.87 ÷ 10 =
  6. 6.171.1 ÷ 10 =
  7. 7.290.8 ÷ 10 =
  8. 8.55.7 × 100 =
  9. 9.373.7 × 10 =
  10. 10.39.39 ÷ 10 =
  11. 11.3.62 × 100 =
  12. 12.26.19 ÷ 10 =
  13. 13.173.7 ÷ 10 =
  14. 14.406.1 × 100 =
  15. 15.471.9 ÷ 10 =
  16. 16.19.63 × 10 =
  17. 17.39.66 × 1000 =
  18. 18.25.1 × 10 =
  19. 19.62.3 × 10 =
  20. 20.206.3 × 10 =
  21. 21.20.11 ÷ 100 =
  22. 22.88.7 × 10 =
  23. 23.84.8 × 100 =
  24. 24.47.43 × 1000 =
  25. 25.290.5 ÷ 10 =
  26. 26.7.67 ÷ 10 =
  27. 27.20.19 × 100 =
  28. 28.402.2 × 10 =
  29. 29.5.76 ÷ 100 =
  30. 30.10.62 ÷ 1000 =
  31. 31.248.7 ÷ 1000 =
  32. 32.48.69 ÷ 10 =
  33. 33.45.41 ÷ 100 =
  34. 34.33.34 × 100 =
  35. 35.143.6 ÷ 10 =
  36. 36.21.03 × 100 =
  37. 37.3.11 ÷ 100 =
  38. 38.498.3 ÷ 1000 =
  39. 39.428.8 × 100 =
  40. 40.40.87 ÷ 10 =

Answer key

  1. 413.9
  2. 1.25
  3. 4707
  4. 1681
  5. 1.187
  6. 17.11
  7. 29.08
  8. 5570
  9. 3737
  10. 3.939
  11. 362
  12. 2.619
  13. 17.37
  14. 40610
  15. 47.19
  16. 196.3
  17. 39660
  18. 251
  19. 623
  20. 2063
  21. 0.2011
  22. 887
  23. 8480
  24. 47430
  25. 29.05
  26. 0.767
  27. 2019
  28. 4022
  29. 0.0576
  30. 0.01062
  31. 0.2487
  32. 4.869
  33. 0.4541
  34. 3334
  35. 14.36
  36. 2103
  37. 0.0311
  38. 0.4983
  39. 42880
  40. 4.087

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