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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 316 · 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. 1.423.1 × 1000 =
  2. 2.17.9 ÷ 100 =
  3. 3.100.1 ÷ 10 =
  4. 4.5.31 × 1000 =
  5. 5.431.1 ÷ 10 =
  6. 6.1.32 × 1000 =
  7. 7.401.6 × 100 =
  8. 8.403.4 × 10 =
  9. 9.15.81 × 1000 =
  10. 10.34.32 ÷ 1000 =
  11. 11.37.57 × 10 =
  12. 12.53.9 × 1000 =
  13. 13.12.81 × 1000 =
  14. 14.0.16 × 1000 =
  15. 15.18.51 × 100 =
  16. 16.476.4 × 1000 =
  17. 17.39.59 × 10 =
  18. 18.170.2 ÷ 10 =
  19. 19.249.2 ÷ 10 =
  20. 20.14.81 × 1000 =
  21. 21.397.5 ÷ 10 =
  22. 22.37.52 ÷ 10 =
  23. 23.16.72 ÷ 100 =
  24. 24.44.49 × 1000 =
  25. 25.89.6 × 1000 =
  26. 26.40.84 × 100 =
  27. 27.370.6 ÷ 100 =
  28. 28.14.06 ÷ 10 =
  29. 29.16.33 ÷ 10 =
  30. 30.76.7 ÷ 10 =
  31. 31.0.63 ÷ 100 =
  32. 32.239.2 × 10 =
  33. 33.102.9 × 10 =
  34. 34.161.7 ÷ 100 =
  35. 35.295.1 × 1000 =
  36. 36.1.95 × 1000 =
  37. 37.69.9 × 1000 =
  38. 38.393.8 × 10 =
  39. 39.31.63 × 1000 =
  40. 40.490.5 ÷ 10 =

Answer key

  1. 423100
  2. 0.179
  3. 10.01
  4. 5310
  5. 43.11
  6. 1320
  7. 40160
  8. 4034
  9. 15810
  10. 0.03432
  11. 375.7
  12. 53900
  13. 12810
  14. 160
  15. 1851
  16. 476400
  17. 395.9
  18. 17.02
  19. 24.92
  20. 14810
  21. 39.75
  22. 3.752
  23. 0.1672
  24. 44490
  25. 89600
  26. 4084
  27. 3.706
  28. 1.406
  29. 1.633
  30. 7.67
  31. 0.0063
  32. 2392
  33. 1029
  34. 1.617
  35. 295100
  36. 1950
  37. 69900
  38. 3938
  39. 31630
  40. 49.05

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