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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 496 · 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. 1.41.07 ÷ 1000 =
  2. 2.3.61 ÷ 1000 =
  3. 3.312.9 ÷ 10 =
  4. 4.373.1 × 1000 =
  5. 5.49.53 ÷ 10 =
  6. 6.45.87 × 100 =
  7. 7.11.66 × 1000 =
  8. 8.12.47 ÷ 1000 =
  9. 9.20.34 ÷ 10 =
  10. 10.437.9 ÷ 1000 =
  11. 11.42.44 ÷ 10 =
  12. 12.32.45 ÷ 100 =
  13. 13.476.4 ÷ 100 =
  14. 14.153.1 ÷ 100 =
  15. 15.426.8 × 1000 =
  16. 16.7.35 ÷ 10 =
  17. 17.97.5 × 10 =
  18. 18.0.91 ÷ 1000 =
  19. 19.1.84 ÷ 100 =
  20. 20.34.79 × 10 =
  21. 21.11.71 × 10 =
  22. 22.38.31 ÷ 1000 =
  23. 23.427.1 × 1000 =
  24. 24.6.21 ÷ 10 =
  25. 25.60.5 × 100 =
  26. 26.13.09 ÷ 10 =
  27. 27.212.8 ÷ 10 =
  28. 28.0.99 × 1000 =
  29. 29.46.52 × 100 =
  30. 30.8.71 × 10 =
  31. 31.312.2 ÷ 10 =
  32. 32.121.7 ÷ 100 =
  33. 33.0.11 × 10 =
  34. 34.132.4 × 1000 =
  35. 35.29.36 ÷ 100 =
  36. 36.143.9 ÷ 100 =
  37. 37.3.42 × 1000 =
  38. 38.330.9 × 1000 =
  39. 39.63.1 ÷ 100 =
  40. 40.106.3 ÷ 100 =

Answer key

  1. 0.04107
  2. 0.00361
  3. 31.29
  4. 373100
  5. 4.953
  6. 4587
  7. 11660
  8. 0.01247
  9. 2.034
  10. 0.4379
  11. 4.244
  12. 0.3245
  13. 4.764
  14. 1.531
  15. 426800
  16. 0.735
  17. 975
  18. 0.00091
  19. 0.0184
  20. 347.9
  21. 117.1
  22. 0.03831
  23. 427100
  24. 0.621
  25. 6050
  26. 1.309
  27. 21.28
  28. 990
  29. 4652
  30. 87.1
  31. 31.22
  32. 1.217
  33. 1.1
  34. 132400
  35. 0.2936
  36. 1.439
  37. 3420
  38. 330900
  39. 0.631
  40. 1.063

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