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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 766 · 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. 1.129.8 × 100 =
  2. 2.434.8 × 10 =
  3. 3.334.6 × 10 =
  4. 4.1.46 ÷ 1000 =
  5. 5.13.66 × 10 =
  6. 6.258.4 ÷ 1000 =
  7. 7.211.1 × 10 =
  8. 8.494.1 ÷ 10 =
  9. 9.312.3 × 1000 =
  10. 10.16.73 × 100 =
  11. 11.370.1 × 10 =
  12. 12.39.21 × 1000 =
  13. 13.61.8 ÷ 10 =
  14. 14.30.68 ÷ 10 =
  15. 15.38.9 ÷ 1000 =
  16. 16.96.9 × 1000 =
  17. 17.18.37 × 1000 =
  18. 18.402.1 × 100 =
  19. 19.48.68 ÷ 10 =
  20. 20.48.14 × 10 =
  21. 21.202.1 × 10 =
  22. 22.200.4 × 100 =
  23. 23.36.7 ÷ 1000 =
  24. 24.329.8 × 100 =
  25. 25.35.01 ÷ 1000 =
  26. 26.8.9 ÷ 10 =
  27. 27.18.08 ÷ 1000 =
  28. 28.4.08 ÷ 10 =
  29. 29.99.5 ÷ 1000 =
  30. 30.32.4 × 1000 =
  31. 31.199.7 × 1000 =
  32. 32.14.58 × 1000 =
  33. 33.26.1 × 100 =
  34. 34.412.9 × 1000 =
  35. 35.339.1 ÷ 100 =
  36. 36.23.31 × 100 =
  37. 37.23.8 ÷ 10 =
  38. 38.427.8 × 1000 =
  39. 39.8.82 ÷ 1000 =
  40. 40.10.22 ÷ 1000 =

Answer key

  1. 12980
  2. 4348
  3. 3346
  4. 0.00146
  5. 136.6
  6. 0.2584
  7. 2111
  8. 49.41
  9. 312300
  10. 1673
  11. 3701
  12. 39210
  13. 6.18
  14. 3.068
  15. 0.0389
  16. 96900
  17. 18370
  18. 40210
  19. 4.868
  20. 481.4
  21. 2021
  22. 20040
  23. 0.0367
  24. 32980
  25. 0.03501
  26. 0.89
  27. 0.01808
  28. 0.408
  29. 0.0995
  30. 32400
  31. 199700
  32. 14580
  33. 2610
  34. 412900
  35. 3.391
  36. 2331
  37. 2.38
  38. 427800
  39. 0.00882
  40. 0.01022

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