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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 831 · 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. 1.150.9 ÷ 10 =
  2. 2.26.03 × 100 =
  3. 3.6.67 × 10 =
  4. 4.296.7 × 100 =
  5. 5.329.4 ÷ 1000 =
  6. 6.42.86 ÷ 1000 =
  7. 7.112.8 × 100 =
  8. 8.4.92 × 10 =
  9. 9.6.81 × 100 =
  10. 10.267.1 ÷ 10 =
  11. 11.473.4 × 1000 =
  12. 12.37.59 × 100 =
  13. 13.46.66 × 10 =
  14. 14.49.43 × 100 =
  15. 15.187.9 × 100 =
  16. 16.484.2 × 1000 =
  17. 17.3.45 ÷ 100 =
  18. 18.426.1 × 1000 =
  19. 19.30.56 ÷ 1000 =
  20. 20.71.3 ÷ 10 =
  21. 21.8.19 × 100 =
  22. 22.26.54 ÷ 1000 =
  23. 23.228.1 ÷ 100 =
  24. 24.342.8 × 10 =
  25. 25.127.8 × 100 =
  26. 26.9.04 × 1000 =
  27. 27.31.44 × 100 =
  28. 28.349.2 ÷ 1000 =
  29. 29.24.84 × 10 =
  30. 30.124.6 ÷ 100 =
  31. 31.207.6 ÷ 10 =
  32. 32.173.3 × 10 =
  33. 33.282.7 × 1000 =
  34. 34.83.9 × 10 =
  35. 35.453.9 × 10 =
  36. 36.60.8 ÷ 10 =
  37. 37.30.16 × 10 =
  38. 38.17.86 × 100 =
  39. 39.369.6 × 100 =
  40. 40.23.82 ÷ 100 =

Answer key

  1. 15.09
  2. 2603
  3. 66.7
  4. 29670
  5. 0.3294
  6. 0.04286
  7. 11280
  8. 49.2
  9. 681
  10. 26.71
  11. 473400
  12. 3759
  13. 466.6
  14. 4943
  15. 18790
  16. 484200
  17. 0.0345
  18. 426100
  19. 0.03056
  20. 7.13
  21. 819
  22. 0.02654
  23. 2.281
  24. 3428
  25. 12780
  26. 9040
  27. 3144
  28. 0.3492
  29. 248.4
  30. 1.246
  31. 20.76
  32. 1733
  33. 282700
  34. 839
  35. 4539
  36. 6.08
  37. 301.6
  38. 1786
  39. 36960
  40. 0.2382

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