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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 835 · 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. 1.47.2 × 100 =
  2. 2.23.1 × 1000 =
  3. 3.363.6 × 1000 =
  4. 4.16.24 ÷ 100 =
  5. 5.35.6 ÷ 1000 =
  6. 6.427.9 ÷ 1000 =
  7. 7.49.07 × 10 =
  8. 8.451.2 × 1000 =
  9. 9.23.76 × 1000 =
  10. 10.16.33 × 10 =
  11. 11.320.4 × 10 =
  12. 12.15.23 ÷ 10 =
  13. 13.1.08 × 100 =
  14. 14.5.54 ÷ 1000 =
  15. 15.0.54 ÷ 10 =
  16. 16.229.1 ÷ 1000 =
  17. 17.35.61 × 10 =
  18. 18.2.36 ÷ 10 =
  19. 19.39.21 × 1000 =
  20. 20.444.5 × 1000 =
  21. 21.2.59 × 1000 =
  22. 22.3.98 × 100 =
  23. 23.121.4 ÷ 10 =
  24. 24.382.2 ÷ 10 =
  25. 25.41.06 × 1000 =
  26. 26.18.09 ÷ 1000 =
  27. 27.110.6 ÷ 100 =
  28. 28.20.05 ÷ 100 =
  29. 29.4.06 ÷ 100 =
  30. 30.412.4 × 1000 =
  31. 31.45.69 × 100 =
  32. 32.14.34 × 1000 =
  33. 33.46.61 ÷ 1000 =
  34. 34.212.7 × 10 =
  35. 35.273.9 ÷ 10 =
  36. 36.19.97 ÷ 1000 =
  37. 37.34.07 ÷ 100 =
  38. 38.81.7 × 1000 =
  39. 39.419.1 ÷ 100 =
  40. 40.188.8 ÷ 100 =

Answer key

  1. 4720
  2. 23100
  3. 363600
  4. 0.1624
  5. 0.0356
  6. 0.4279
  7. 490.7
  8. 451200
  9. 23760
  10. 163.3
  11. 3204
  12. 1.523
  13. 108
  14. 0.00554
  15. 0.054
  16. 0.2291
  17. 356.1
  18. 0.236
  19. 39210
  20. 444500
  21. 2590
  22. 398
  23. 12.14
  24. 38.22
  25. 41060
  26. 0.01809
  27. 1.106
  28. 0.2005
  29. 0.0406
  30. 412400
  31. 4569
  32. 14340
  33. 0.04661
  34. 2127
  35. 27.39
  36. 0.01997
  37. 0.3407
  38. 81700
  39. 4.191
  40. 1.888

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