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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 281 · 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. 1.24.73 ÷ 10 =
  2. 2.470.1 ÷ 100 =
  3. 3.343.2 ÷ 1000 =
  4. 4.207.6 × 10 =
  5. 5.148.8 ÷ 1000 =
  6. 6.312.3 × 10 =
  7. 7.19.63 ÷ 10 =
  8. 8.278.9 ÷ 100 =
  9. 9.410.4 × 1000 =
  10. 10.16.03 ÷ 10 =
  11. 11.28.01 ÷ 1000 =
  12. 12.390.5 × 10 =
  13. 13.149.1 × 100 =
  14. 14.495.3 × 10 =
  15. 15.44.27 ÷ 100 =
  16. 16.264.5 × 100 =
  17. 17.364.6 × 10 =
  18. 18.24.83 ÷ 1000 =
  19. 19.15.81 ÷ 10 =
  20. 20.14.17 × 1000 =
  21. 21.2.1 × 1000 =
  22. 22.23.41 × 10 =
  23. 23.48.78 × 10 =
  24. 24.124.9 × 1000 =
  25. 25.484.9 ÷ 10 =
  26. 26.33.21 × 100 =
  27. 27.157.4 ÷ 1000 =
  28. 28.285.9 × 10 =
  29. 29.338.6 ÷ 1000 =
  30. 30.442.1 × 100 =
  31. 31.384.4 × 10 =
  32. 32.107.1 ÷ 10 =
  33. 33.10.76 × 100 =
  34. 34.12.37 ÷ 10 =
  35. 35.5.54 ÷ 100 =
  36. 36.410.1 × 1000 =
  37. 37.49.03 ÷ 100 =
  38. 38.394.4 × 10 =
  39. 39.1.92 ÷ 100 =
  40. 40.43.18 ÷ 1000 =

Answer key

  1. 2.473
  2. 4.701
  3. 0.3432
  4. 2076
  5. 0.1488
  6. 3123
  7. 1.963
  8. 2.789
  9. 410400
  10. 1.603
  11. 0.02801
  12. 3905
  13. 14910
  14. 4953
  15. 0.4427
  16. 26450
  17. 3646
  18. 0.02483
  19. 1.581
  20. 14170
  21. 2100
  22. 234.1
  23. 487.8
  24. 124900
  25. 48.49
  26. 3321
  27. 0.1574
  28. 2859
  29. 0.3386
  30. 44210
  31. 3844
  32. 10.71
  33. 1076
  34. 1.237
  35. 0.0554
  36. 410100
  37. 0.4903
  38. 3944
  39. 0.0192
  40. 0.04318

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