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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 533 · 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. 1.186.4 × 10 =
  2. 2.21.55 × 100 =
  3. 3.86.5 × 1000 =
  4. 4.11.71 × 1000 =
  5. 5.13.19 × 100 =
  6. 6.48.33 ÷ 10 =
  7. 7.468.2 × 1000 =
  8. 8.17.47 ÷ 1000 =
  9. 9.22.26 ÷ 100 =
  10. 10.44.31 ÷ 10 =
  11. 11.45.17 ÷ 10 =
  12. 12.416.9 × 10 =
  13. 13.48.54 × 10 =
  14. 14.54.7 × 10 =
  15. 15.366.3 ÷ 10 =
  16. 16.186.7 ÷ 1000 =
  17. 17.348.2 ÷ 100 =
  18. 18.223.7 × 100 =
  19. 19.26.26 ÷ 1000 =
  20. 20.239.2 × 1000 =
  21. 21.46.89 × 100 =
  22. 22.164.7 ÷ 10 =
  23. 23.38.89 × 10 =
  24. 24.120.4 ÷ 100 =
  25. 25.212.9 ÷ 1000 =
  26. 26.411.9 ÷ 100 =
  27. 27.0.92 ÷ 1000 =
  28. 28.312.3 ÷ 100 =
  29. 29.37.1 × 1000 =
  30. 30.346.7 × 10 =
  31. 31.1.73 ÷ 1000 =
  32. 32.36.84 ÷ 1000 =
  33. 33.222.6 × 10 =
  34. 34.410.7 ÷ 100 =
  35. 35.2.74 × 100 =
  36. 36.75.1 ÷ 100 =
  37. 37.42.95 ÷ 100 =
  38. 38.340.1 ÷ 1000 =
  39. 39.395.4 ÷ 1000 =
  40. 40.134.6 × 10 =

Answer key

  1. 1864
  2. 2155
  3. 86500
  4. 11710
  5. 1319
  6. 4.833
  7. 468200
  8. 0.01747
  9. 0.2226
  10. 4.431
  11. 4.517
  12. 4169
  13. 485.4
  14. 547
  15. 36.63
  16. 0.1867
  17. 3.482
  18. 22370
  19. 0.02626
  20. 239200
  21. 4689
  22. 16.47
  23. 388.9
  24. 1.204
  25. 0.2129
  26. 4.119
  27. 0.00092
  28. 3.123
  29. 37100
  30. 3467
  31. 0.00173
  32. 0.03684
  33. 2226
  34. 4.107
  35. 274
  36. 0.751
  37. 0.4295
  38. 0.3401
  39. 0.3954
  40. 1346

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