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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 682 · 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. 1.389.6 × 10 =
  2. 2.11.98 × 10 =
  3. 3.22.06 × 1000 =
  4. 4.29.13 ÷ 10 =
  5. 5.46.44 ÷ 10 =
  6. 6.135.4 × 1000 =
  7. 7.399.7 ÷ 10 =
  8. 8.345.1 ÷ 100 =
  9. 9.44.74 × 1000 =
  10. 10.76.7 × 100 =
  11. 11.274.4 ÷ 100 =
  12. 12.16.1 × 10 =
  13. 13.31.59 ÷ 10 =
  14. 14.15.31 ÷ 100 =
  15. 15.212.4 ÷ 1000 =
  16. 16.44.58 × 100 =
  17. 17.25.87 ÷ 10 =
  18. 18.277.9 ÷ 10 =
  19. 19.65.6 × 10 =
  20. 20.24.26 × 1000 =
  21. 21.13.75 ÷ 10 =
  22. 22.207.7 × 10 =
  23. 23.112.1 × 100 =
  24. 24.41.4 × 1000 =
  25. 25.353.6 ÷ 1000 =
  26. 26.305.2 × 10 =
  27. 27.31.78 × 10 =
  28. 28.11.9 ÷ 1000 =
  29. 29.4.1 × 1000 =
  30. 30.23.46 × 10 =
  31. 31.103.8 × 1000 =
  32. 32.35.07 ÷ 10 =
  33. 33.9.62 ÷ 10 =
  34. 34.385.9 × 10 =
  35. 35.15.18 ÷ 1000 =
  36. 36.110.5 × 100 =
  37. 37.34.95 × 1000 =
  38. 38.34.39 × 10 =
  39. 39.436.2 ÷ 10 =
  40. 40.34.76 ÷ 1000 =

Answer key

  1. 3896
  2. 119.8
  3. 22060
  4. 2.913
  5. 4.644
  6. 135400
  7. 39.97
  8. 3.451
  9. 44740
  10. 7670
  11. 2.744
  12. 161
  13. 3.159
  14. 0.1531
  15. 0.2124
  16. 4458
  17. 2.587
  18. 27.79
  19. 656
  20. 24260
  21. 1.375
  22. 2077
  23. 11210
  24. 41400
  25. 0.3536
  26. 3052
  27. 317.8
  28. 0.0119
  29. 4100
  30. 234.6
  31. 103800
  32. 3.507
  33. 0.962
  34. 3859
  35. 0.01518
  36. 11050
  37. 34950
  38. 343.9
  39. 43.62
  40. 0.03476

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