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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 685 · 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. 1.17.76 × 10 =
  2. 2.16.59 ÷ 1000 =
  3. 3.257.1 × 10 =
  4. 4.12.85 × 1000 =
  5. 5.112.7 × 10 =
  6. 6.43.51 × 100 =
  7. 7.45.92 ÷ 10 =
  8. 8.280.1 × 10 =
  9. 9.45.96 ÷ 1000 =
  10. 10.43.74 ÷ 100 =
  11. 11.12.81 × 10 =
  12. 12.365.2 × 1000 =
  13. 13.47.97 ÷ 1000 =
  14. 14.223.9 ÷ 100 =
  15. 15.16.95 × 100 =
  16. 16.41.68 × 1000 =
  17. 17.13.57 ÷ 10 =
  18. 18.1.97 × 100 =
  19. 19.15.7 × 10 =
  20. 20.28.51 × 100 =
  21. 21.401.4 × 1000 =
  22. 22.115.7 × 100 =
  23. 23.16.98 × 100 =
  24. 24.430.2 × 1000 =
  25. 25.482.7 × 100 =
  26. 26.22.8 × 100 =
  27. 27.28.81 ÷ 1000 =
  28. 28.36.8 × 100 =
  29. 29.30.37 ÷ 1000 =
  30. 30.45.11 ÷ 10 =
  31. 31.13.75 ÷ 1000 =
  32. 32.9.54 ÷ 1000 =
  33. 33.452.5 ÷ 10 =
  34. 34.404.8 × 1000 =
  35. 35.18.71 ÷ 10 =
  36. 36.21.46 ÷ 10 =
  37. 37.43.07 ÷ 1000 =
  38. 38.42.4 × 10 =
  39. 39.5.36 ÷ 10 =
  40. 40.0.62 ÷ 1000 =

Answer key

  1. 177.6
  2. 0.01659
  3. 2571
  4. 12850
  5. 1127
  6. 4351
  7. 4.592
  8. 2801
  9. 0.04596
  10. 0.4374
  11. 128.1
  12. 365200
  13. 0.04797
  14. 2.239
  15. 1695
  16. 41680
  17. 1.357
  18. 197
  19. 157
  20. 2851
  21. 401400
  22. 11570
  23. 1698
  24. 430200
  25. 48270
  26. 2280
  27. 0.02881
  28. 3680
  29. 0.03037
  30. 4.511
  31. 0.01375
  32. 0.00954
  33. 45.25
  34. 404800
  35. 1.871
  36. 2.146
  37. 0.04307
  38. 424
  39. 0.536
  40. 0.00062

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