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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 178 · 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. 1.333.9 × 10 =
  2. 2.84.2 × 10 =
  3. 3.10.82 ÷ 100 =
  4. 4.43.56 ÷ 10 =
  5. 5.116.2 × 10 =
  6. 6.71.1 ÷ 1000 =
  7. 7.335.6 ÷ 10 =
  8. 8.490.3 ÷ 100 =
  9. 9.40.07 × 10 =
  10. 10.24.01 ÷ 100 =
  11. 11.17.52 × 10 =
  12. 12.428.3 ÷ 10 =
  13. 13.16.61 × 10 =
  14. 14.6.08 × 10 =
  15. 15.151.4 ÷ 10 =
  16. 16.41.3 × 10 =
  17. 17.33.65 ÷ 100 =
  18. 18.28.25 ÷ 10 =
  19. 19.8.4 × 1000 =
  20. 20.74.1 ÷ 1000 =
  21. 21.349.2 × 1000 =
  22. 22.23.99 ÷ 1000 =
  23. 23.286.7 ÷ 10 =
  24. 24.39.47 ÷ 1000 =
  25. 25.246.1 × 1000 =
  26. 26.276.4 × 1000 =
  27. 27.24.95 × 100 =
  28. 28.106.7 × 1000 =
  29. 29.486.1 × 10 =
  30. 30.19.61 ÷ 100 =
  31. 31.205.3 × 100 =
  32. 32.57.1 ÷ 10 =
  33. 33.56.7 ÷ 100 =
  34. 34.49.9 × 1000 =
  35. 35.23.76 ÷ 100 =
  36. 36.489.3 ÷ 1000 =
  37. 37.42.76 ÷ 10 =
  38. 38.278.4 ÷ 100 =
  39. 39.243.1 ÷ 1000 =
  40. 40.200.3 ÷ 1000 =

Answer key

  1. 3339
  2. 842
  3. 0.1082
  4. 4.356
  5. 1162
  6. 0.0711
  7. 33.56
  8. 4.903
  9. 400.7
  10. 0.2401
  11. 175.2
  12. 42.83
  13. 166.1
  14. 60.8
  15. 15.14
  16. 413
  17. 0.3365
  18. 2.825
  19. 8400
  20. 0.0741
  21. 349200
  22. 0.02399
  23. 28.67
  24. 0.03947
  25. 246100
  26. 276400
  27. 2495
  28. 106700
  29. 4861
  30. 0.1961
  31. 20530
  32. 5.71
  33. 0.567
  34. 49900
  35. 0.2376
  36. 0.4893
  37. 4.276
  38. 2.784
  39. 0.2431
  40. 0.2003

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