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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 405 · 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. 1.118.8 ÷ 10 =
  2. 2.369.5 × 100 =
  3. 3.36.57 ÷ 100 =
  4. 4.6.29 × 10 =
  5. 5.5.94 × 1000 =
  6. 6.243.1 × 100 =
  7. 7.36.1 × 10 =
  8. 8.43.98 ÷ 10 =
  9. 9.41.9 × 100 =
  10. 10.370.5 × 100 =
  11. 11.48.05 ÷ 1000 =
  12. 12.277.4 ÷ 100 =
  13. 13.15.01 ÷ 100 =
  14. 14.56.5 ÷ 10 =
  15. 15.8.81 × 1000 =
  16. 16.1.65 × 10 =
  17. 17.9.84 ÷ 1000 =
  18. 18.365.2 ÷ 100 =
  19. 19.399.6 ÷ 10 =
  20. 20.34.3 × 1000 =
  21. 21.376.3 × 1000 =
  22. 22.254.7 × 1000 =
  23. 23.9.63 ÷ 10 =
  24. 24.47.8 × 10 =
  25. 25.7.45 ÷ 100 =
  26. 26.27.47 ÷ 100 =
  27. 27.93.6 × 10 =
  28. 28.32.92 ÷ 100 =
  29. 29.231.3 ÷ 100 =
  30. 30.366.1 × 10 =
  31. 31.471.5 ÷ 100 =
  32. 32.44.11 ÷ 1000 =
  33. 33.391.1 × 100 =
  34. 34.471.6 ÷ 1000 =
  35. 35.367.8 × 100 =
  36. 36.13.26 ÷ 100 =
  37. 37.7.95 × 10 =
  38. 38.217.9 ÷ 10 =
  39. 39.420.9 × 10 =
  40. 40.24.89 × 100 =

Answer key

  1. 11.88
  2. 36950
  3. 0.3657
  4. 62.9
  5. 5940
  6. 24310
  7. 361
  8. 4.398
  9. 4190
  10. 37050
  11. 0.04805
  12. 2.774
  13. 0.1501
  14. 5.65
  15. 8810
  16. 16.5
  17. 0.00984
  18. 3.652
  19. 39.96
  20. 34300
  21. 376300
  22. 254700
  23. 0.963
  24. 478
  25. 0.0745
  26. 0.2747
  27. 936
  28. 0.3292
  29. 2.313
  30. 3661
  31. 4.715
  32. 0.04411
  33. 39110
  34. 0.4716
  35. 36780
  36. 0.1326
  37. 79.5
  38. 21.79
  39. 4209
  40. 2489

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