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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 441 · 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. 1.3.98 ÷ 10 =
  2. 2.337.1 ÷ 10 =
  3. 3.27.44 × 10 =
  4. 4.70.8 × 1000 =
  5. 5.6.41 ÷ 100 =
  6. 6.36.7 × 1000 =
  7. 7.131.2 ÷ 100 =
  8. 8.101.9 × 10 =
  9. 9.33.69 × 1000 =
  10. 10.7.04 ÷ 10 =
  11. 11.28.1 ÷ 1000 =
  12. 12.15.56 ÷ 100 =
  13. 13.0.61 ÷ 1000 =
  14. 14.37.37 × 100 =
  15. 15.242.8 ÷ 10 =
  16. 16.0.61 × 10 =
  17. 17.39.94 × 1000 =
  18. 18.25.49 ÷ 1000 =
  19. 19.126.3 ÷ 1000 =
  20. 20.8.2 × 1000 =
  21. 21.45.06 ÷ 100 =
  22. 22.131.3 × 10 =
  23. 23.41.36 × 10 =
  24. 24.48.53 ÷ 10 =
  25. 25.13.26 ÷ 1000 =
  26. 26.13.17 ÷ 10 =
  27. 27.421.7 × 1000 =
  28. 28.498.9 × 10 =
  29. 29.16.26 ÷ 1000 =
  30. 30.35.14 × 10 =
  31. 31.23.35 × 1000 =
  32. 32.32.93 ÷ 10 =
  33. 33.190.8 × 1000 =
  34. 34.43.31 ÷ 1000 =
  35. 35.18.15 × 10 =
  36. 36.42.98 ÷ 10 =
  37. 37.9.52 × 100 =
  38. 38.248.1 ÷ 100 =
  39. 39.3.5 × 10 =
  40. 40.44.89 ÷ 100 =

Answer key

  1. 0.398
  2. 33.71
  3. 274.4
  4. 70800
  5. 0.0641
  6. 36700
  7. 1.312
  8. 1019
  9. 33690
  10. 0.704
  11. 0.0281
  12. 0.1556
  13. 0.00061
  14. 3737
  15. 24.28
  16. 6.1
  17. 39940
  18. 0.02549
  19. 0.1263
  20. 8200
  21. 0.4506
  22. 1313
  23. 413.6
  24. 4.853
  25. 0.01326
  26. 1.317
  27. 421700
  28. 4989
  29. 0.01626
  30. 351.4
  31. 23350
  32. 3.293
  33. 190800
  34. 0.04331
  35. 181.5
  36. 4.298
  37. 952
  38. 2.481
  39. 35
  40. 0.4489

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