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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 603 · 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. 1.39.16 × 100 =
  2. 2.108.9 × 10 =
  3. 3.11.87 ÷ 100 =
  4. 4.23.55 ÷ 10 =
  5. 5.4.82 ÷ 10 =
  6. 6.364.3 ÷ 10 =
  7. 7.12.85 × 10 =
  8. 8.59.8 ÷ 1000 =
  9. 9.18.62 × 1000 =
  10. 10.119.4 ÷ 10 =
  11. 11.34.3 × 100 =
  12. 12.244.1 ÷ 1000 =
  13. 13.231.8 × 10 =
  14. 14.9.42 ÷ 1000 =
  15. 15.131.1 × 1000 =
  16. 16.212.8 ÷ 10 =
  17. 17.232.9 × 1000 =
  18. 18.14.1 × 1000 =
  19. 19.340.1 ÷ 10 =
  20. 20.383.3 × 1000 =
  21. 21.448.3 × 100 =
  22. 22.368.1 × 10 =
  23. 23.345.5 × 100 =
  24. 24.391.8 ÷ 10 =
  25. 25.462.9 × 100 =
  26. 26.319.9 ÷ 100 =
  27. 27.232.3 × 1000 =
  28. 28.285.9 × 1000 =
  29. 29.27.12 ÷ 10 =
  30. 30.34.7 × 1000 =
  31. 31.8.81 × 10 =
  32. 32.3.09 × 100 =
  33. 33.225.4 × 10 =
  34. 34.78.4 × 10 =
  35. 35.313.3 × 100 =
  36. 36.42.08 × 1000 =
  37. 37.112.2 ÷ 10 =
  38. 38.16.99 × 1000 =
  39. 39.26.22 × 100 =
  40. 40.320.7 ÷ 10 =

Answer key

  1. 3916
  2. 1089
  3. 0.1187
  4. 2.355
  5. 0.482
  6. 36.43
  7. 128.5
  8. 0.0598
  9. 18620
  10. 11.94
  11. 3430
  12. 0.2441
  13. 2318
  14. 0.00942
  15. 131100
  16. 21.28
  17. 232900
  18. 14100
  19. 34.01
  20. 383300
  21. 44830
  22. 3681
  23. 34550
  24. 39.18
  25. 46290
  26. 3.199
  27. 232300
  28. 285900
  29. 2.712
  30. 34700
  31. 88.1
  32. 309
  33. 2254
  34. 784
  35. 31330
  36. 42080
  37. 11.22
  38. 16990
  39. 2622
  40. 32.07

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