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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 395 · 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. 1.78.9 × 100 =
  2. 2.37.9 × 1000 =
  3. 3.38.98 × 10 =
  4. 4.42.88 ÷ 10 =
  5. 5.311.7 ÷ 100 =
  6. 6.299.3 ÷ 10 =
  7. 7.194.1 ÷ 10 =
  8. 8.410.7 ÷ 10 =
  9. 9.9.54 ÷ 1000 =
  10. 10.5.45 ÷ 10 =
  11. 11.40.26 ÷ 1000 =
  12. 12.31.14 ÷ 10 =
  13. 13.22.94 ÷ 10 =
  14. 14.26.38 ÷ 10 =
  15. 15.358.8 ÷ 10 =
  16. 16.47.11 × 1000 =
  17. 17.438.1 ÷ 10 =
  18. 18.13.68 × 100 =
  19. 19.185.1 ÷ 10 =
  20. 20.52.6 × 1000 =
  21. 21.203.7 ÷ 100 =
  22. 22.397.1 ÷ 1000 =
  23. 23.74.1 ÷ 100 =
  24. 24.15.41 × 10 =
  25. 25.455.4 × 10 =
  26. 26.136.3 × 10 =
  27. 27.8.03 ÷ 10 =
  28. 28.6.41 × 1000 =
  29. 29.205.4 × 10 =
  30. 30.1.77 × 1000 =
  31. 31.40.68 ÷ 1000 =
  32. 32.30.44 × 100 =
  33. 33.40.19 × 10 =
  34. 34.46.38 × 10 =
  35. 35.433.3 ÷ 1000 =
  36. 36.31.72 ÷ 10 =
  37. 37.320.3 ÷ 1000 =
  38. 38.43.89 ÷ 100 =
  39. 39.20.69 ÷ 10 =
  40. 40.155.4 × 10 =

Answer key

  1. 7890
  2. 37900
  3. 389.8
  4. 4.288
  5. 3.117
  6. 29.93
  7. 19.41
  8. 41.07
  9. 0.00954
  10. 0.545
  11. 0.04026
  12. 3.114
  13. 2.294
  14. 2.638
  15. 35.88
  16. 47110
  17. 43.81
  18. 1368
  19. 18.51
  20. 52600
  21. 2.037
  22. 0.3971
  23. 0.741
  24. 154.1
  25. 4554
  26. 1363
  27. 0.803
  28. 6410
  29. 2054
  30. 1770
  31. 0.04068
  32. 3044
  33. 401.9
  34. 463.8
  35. 0.4333
  36. 3.172
  37. 0.3203
  38. 0.4389
  39. 2.069
  40. 1554

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