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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 82 · 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. 1.18.7 × 10 =
  2. 2.455.6 ÷ 100 =
  3. 3.19.1 ÷ 1000 =
  4. 4.35.13 ÷ 1000 =
  5. 5.378.6 × 1000 =
  6. 6.249.1 × 100 =
  7. 7.17.21 × 1000 =
  8. 8.324.3 × 10 =
  9. 9.43.25 × 100 =
  10. 10.46.25 × 1000 =
  11. 11.31.86 × 100 =
  12. 12.22.32 × 10 =
  13. 13.27.42 ÷ 100 =
  14. 14.5.66 × 100 =
  15. 15.5.36 ÷ 10 =
  16. 16.244.8 × 100 =
  17. 17.42.74 × 10 =
  18. 18.46.97 × 1000 =
  19. 19.19.79 × 100 =
  20. 20.13.71 ÷ 10 =
  21. 21.392.2 ÷ 1000 =
  22. 22.417.4 ÷ 10 =
  23. 23.27.35 ÷ 1000 =
  24. 24.34.51 × 100 =
  25. 25.35.8 × 100 =
  26. 26.436.3 × 1000 =
  27. 27.467.1 × 10 =
  28. 28.35.06 ÷ 100 =
  29. 29.16.19 × 100 =
  30. 30.49.47 ÷ 100 =
  31. 31.17.47 ÷ 100 =
  32. 32.401.3 ÷ 1000 =
  33. 33.8.35 × 1000 =
  34. 34.43.18 ÷ 10 =
  35. 35.42.71 ÷ 100 =
  36. 36.14.81 × 10 =
  37. 37.487.6 ÷ 100 =
  38. 38.45.71 ÷ 10 =
  39. 39.37.37 ÷ 1000 =
  40. 40.313.6 × 100 =

Answer key

  1. 187
  2. 4.556
  3. 0.0191
  4. 0.03513
  5. 378600
  6. 24910
  7. 17210
  8. 3243
  9. 4325
  10. 46250
  11. 3186
  12. 223.2
  13. 0.2742
  14. 566
  15. 0.536
  16. 24480
  17. 427.4
  18. 46970
  19. 1979
  20. 1.371
  21. 0.3922
  22. 41.74
  23. 0.02735
  24. 3451
  25. 3580
  26. 436300
  27. 4671
  28. 0.3506
  29. 1619
  30. 0.4947
  31. 0.1747
  32. 0.4013
  33. 8350
  34. 4.318
  35. 0.4271
  36. 148.1
  37. 4.876
  38. 4.571
  39. 0.03737
  40. 31360

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