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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 85 · 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. 1.25.83 × 1000 =
  2. 2.392.4 × 1000 =
  3. 3.12.63 ÷ 1000 =
  4. 4.261.1 ÷ 1000 =
  5. 5.4.71 ÷ 10 =
  6. 6.35.35 ÷ 1000 =
  7. 7.11.89 × 1000 =
  8. 8.40.21 × 10 =
  9. 9.1.96 ÷ 1000 =
  10. 10.31.07 × 1000 =
  11. 11.355.9 × 100 =
  12. 12.2.59 × 1000 =
  13. 13.497.6 × 100 =
  14. 14.20.35 ÷ 10 =
  15. 15.243.8 ÷ 10 =
  16. 16.8.75 × 1000 =
  17. 17.14.98 ÷ 100 =
  18. 18.247.1 ÷ 100 =
  19. 19.151.2 × 10 =
  20. 20.12.32 ÷ 10 =
  21. 21.6.77 × 10 =
  22. 22.25.59 ÷ 1000 =
  23. 23.435.1 × 1000 =
  24. 24.85.7 ÷ 10 =
  25. 25.175.1 ÷ 10 =
  26. 26.6.01 × 10 =
  27. 27.5.15 × 10 =
  28. 28.0.21 ÷ 10 =
  29. 29.491.1 × 100 =
  30. 30.58.8 × 1000 =
  31. 31.47.09 ÷ 100 =
  32. 32.123.3 ÷ 10 =
  33. 33.23.21 × 10 =
  34. 34.91.7 ÷ 100 =
  35. 35.9.01 × 10 =
  36. 36.186.7 ÷ 10 =
  37. 37.230.4 ÷ 100 =
  38. 38.34.07 × 1000 =
  39. 39.427.3 ÷ 100 =
  40. 40.489.8 ÷ 10 =

Answer key

  1. 25830
  2. 392400
  3. 0.01263
  4. 0.2611
  5. 0.471
  6. 0.03535
  7. 11890
  8. 402.1
  9. 0.00196
  10. 31070
  11. 35590
  12. 2590
  13. 49760
  14. 2.035
  15. 24.38
  16. 8750
  17. 0.1498
  18. 2.471
  19. 1512
  20. 1.232
  21. 67.7
  22. 0.02559
  23. 435100
  24. 8.57
  25. 17.51
  26. 60.1
  27. 51.5
  28. 0.021
  29. 49110
  30. 58800
  31. 0.4709
  32. 12.33
  33. 232.1
  34. 0.917
  35. 90.1
  36. 18.67
  37. 2.304
  38. 34070
  39. 4.273
  40. 48.98

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