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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 727 · 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. 1.89.7 ÷ 10 =
  2. 2.7.05 ÷ 10 =
  3. 3.27.34 × 100 =
  4. 4.38.3 × 10 =
  5. 5.280.6 ÷ 1000 =
  6. 6.465.3 ÷ 10 =
  7. 7.7.6 ÷ 100 =
  8. 8.230.6 × 10 =
  9. 9.29.67 ÷ 100 =
  10. 10.28.99 × 100 =
  11. 11.5.29 ÷ 10 =
  12. 12.101.9 × 100 =
  13. 13.22.12 ÷ 1000 =
  14. 14.111.4 × 1000 =
  15. 15.23.38 ÷ 100 =
  16. 16.39.39 ÷ 10 =
  17. 17.4.56 ÷ 1000 =
  18. 18.379.7 × 10 =
  19. 19.15.55 × 10 =
  20. 20.367.9 × 10 =
  21. 21.7.14 × 100 =
  22. 22.33.51 ÷ 100 =
  23. 23.35.47 × 100 =
  24. 24.325.7 × 1000 =
  25. 25.41.31 ÷ 100 =
  26. 26.428.9 ÷ 1000 =
  27. 27.36.22 × 1000 =
  28. 28.442.3 ÷ 10 =
  29. 29.18.84 × 10 =
  30. 30.53.7 ÷ 10 =
  31. 31.458.2 ÷ 10 =
  32. 32.14.71 × 10 =
  33. 33.395.2 × 10 =
  34. 34.39.52 × 100 =
  35. 35.410.3 × 10 =
  36. 36.98.6 × 10 =
  37. 37.310.3 ÷ 1000 =
  38. 38.454.5 × 10 =
  39. 39.119.5 × 1000 =
  40. 40.146.1 × 1000 =

Answer key

  1. 8.97
  2. 0.705
  3. 2734
  4. 383
  5. 0.2806
  6. 46.53
  7. 0.076
  8. 2306
  9. 0.2967
  10. 2899
  11. 0.529
  12. 10190
  13. 0.02212
  14. 111400
  15. 0.2338
  16. 3.939
  17. 0.00456
  18. 3797
  19. 155.5
  20. 3679
  21. 714
  22. 0.3351
  23. 3547
  24. 325700
  25. 0.4131
  26. 0.4289
  27. 36220
  28. 44.23
  29. 188.4
  30. 5.37
  31. 45.82
  32. 147.1
  33. 3952
  34. 3952
  35. 4103
  36. 986
  37. 0.3103
  38. 4545
  39. 119500
  40. 146100

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