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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 233 · 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. 1.144.8 × 1000 =
  2. 2.17.5 ÷ 10 =
  3. 3.313.1 ÷ 10 =
  4. 4.23.81 × 10 =
  5. 5.6.51 × 10 =
  6. 6.43.11 × 1000 =
  7. 7.6.3 ÷ 1000 =
  8. 8.92.9 × 100 =
  9. 9.47.86 × 1000 =
  10. 10.25.21 ÷ 1000 =
  11. 11.330.1 × 1000 =
  12. 12.16.51 × 1000 =
  13. 13.35.02 ÷ 10 =
  14. 14.180.7 × 1000 =
  15. 15.348.3 ÷ 10 =
  16. 16.347.1 × 1000 =
  17. 17.173.5 × 10 =
  18. 18.316.8 ÷ 10 =
  19. 19.124.4 ÷ 10 =
  20. 20.1.7 × 1000 =
  21. 21.183.7 ÷ 1000 =
  22. 22.289.2 × 1000 =
  23. 23.7.14 × 10 =
  24. 24.14.71 × 1000 =
  25. 25.10.12 × 1000 =
  26. 26.13.91 × 100 =
  27. 27.115.8 × 1000 =
  28. 28.308.6 ÷ 1000 =
  29. 29.11.25 ÷ 100 =
  30. 30.3.97 × 100 =
  31. 31.485.5 × 100 =
  32. 32.384.6 ÷ 10 =
  33. 33.41.21 × 10 =
  34. 34.17.37 ÷ 100 =
  35. 35.26.77 × 100 =
  36. 36.23.27 ÷ 10 =
  37. 37.117.9 × 100 =
  38. 38.27.63 × 1000 =
  39. 39.414.9 × 100 =
  40. 40.20.44 × 10 =

Answer key

  1. 144800
  2. 1.75
  3. 31.31
  4. 238.1
  5. 65.1
  6. 43110
  7. 0.0063
  8. 9290
  9. 47860
  10. 0.02521
  11. 330100
  12. 16510
  13. 3.502
  14. 180700
  15. 34.83
  16. 347100
  17. 1735
  18. 31.68
  19. 12.44
  20. 1700
  21. 0.1837
  22. 289200
  23. 71.4
  24. 14710
  25. 10120
  26. 1391
  27. 115800
  28. 0.3086
  29. 0.1125
  30. 397
  31. 48550
  32. 38.46
  33. 412.1
  34. 0.1737
  35. 2677
  36. 2.327
  37. 11790
  38. 27630
  39. 41490
  40. 204.4

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