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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 545 · 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. 1.210.8 ÷ 1000 =
  2. 2.5.4 ÷ 1000 =
  3. 3.35.93 × 1000 =
  4. 4.311.6 × 10 =
  5. 5.42.99 ÷ 1000 =
  6. 6.214.1 × 1000 =
  7. 7.14.04 ÷ 100 =
  8. 8.428.7 ÷ 10 =
  9. 9.30.1 ÷ 1000 =
  10. 10.480.8 × 100 =
  11. 11.48.03 ÷ 1000 =
  12. 12.18.49 × 10 =
  13. 13.104.8 ÷ 10 =
  14. 14.426.7 × 1000 =
  15. 15.49.74 ÷ 100 =
  16. 16.425.6 ÷ 1000 =
  17. 17.331.5 ÷ 100 =
  18. 18.85.7 × 1000 =
  19. 19.40.89 ÷ 1000 =
  20. 20.26.67 × 10 =
  21. 21.22.6 × 100 =
  22. 22.42.69 × 10 =
  23. 23.325.1 × 1000 =
  24. 24.157.1 ÷ 100 =
  25. 25.39.76 ÷ 100 =
  26. 26.15.69 × 1000 =
  27. 27.34.27 × 100 =
  28. 28.22.77 × 10 =
  29. 29.27.01 × 100 =
  30. 30.452.1 ÷ 100 =
  31. 31.41.14 × 1000 =
  32. 32.5.33 × 1000 =
  33. 33.12.5 × 1000 =
  34. 34.6.61 ÷ 1000 =
  35. 35.42.44 × 1000 =
  36. 36.371.7 × 10 =
  37. 37.81.6 ÷ 100 =
  38. 38.134.1 × 100 =
  39. 39.247.3 ÷ 10 =
  40. 40.3.17 ÷ 100 =

Answer key

  1. 0.2108
  2. 0.0054
  3. 35930
  4. 3116
  5. 0.04299
  6. 214100
  7. 0.1404
  8. 42.87
  9. 0.0301
  10. 48080
  11. 0.04803
  12. 184.9
  13. 10.48
  14. 426700
  15. 0.4974
  16. 0.4256
  17. 3.315
  18. 85700
  19. 0.04089
  20. 266.7
  21. 2260
  22. 426.9
  23. 325100
  24. 1.571
  25. 0.3976
  26. 15690
  27. 3427
  28. 227.7
  29. 2701
  30. 4.521
  31. 41140
  32. 5330
  33. 12500
  34. 0.00661
  35. 42440
  36. 3717
  37. 0.816
  38. 13410
  39. 24.73
  40. 0.0317

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