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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 327 · 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. 1.6.6 × 1000 =
  2. 2.369.6 × 1000 =
  3. 3.10.99 × 10 =
  4. 4.167.8 ÷ 1000 =
  5. 5.24.7 ÷ 1000 =
  6. 6.6.09 × 1000 =
  7. 7.454.2 × 1000 =
  8. 8.41.3 ÷ 100 =
  9. 9.36.01 × 100 =
  10. 10.25.64 × 10 =
  11. 11.300.5 ÷ 100 =
  12. 12.373.2 ÷ 100 =
  13. 13.41.16 × 1000 =
  14. 14.37.9 × 10 =
  15. 15.344.4 × 10 =
  16. 16.311.6 × 100 =
  17. 17.375.1 ÷ 1000 =
  18. 18.18.51 × 1000 =
  19. 19.47.43 × 10 =
  20. 20.19.8 ÷ 100 =
  21. 21.10.76 × 10 =
  22. 22.6.1 ÷ 100 =
  23. 23.338.7 × 10 =
  24. 24.21.41 ÷ 1000 =
  25. 25.7.74 × 1000 =
  26. 26.234.4 × 100 =
  27. 27.157.7 ÷ 1000 =
  28. 28.443.9 ÷ 100 =
  29. 29.15.35 × 1000 =
  30. 30.158.1 ÷ 100 =
  31. 31.222.6 × 10 =
  32. 32.114.9 × 10 =
  33. 33.19.01 × 1000 =
  34. 34.14.79 × 100 =
  35. 35.4.18 ÷ 100 =
  36. 36.25.79 × 100 =
  37. 37.199.2 ÷ 10 =
  38. 38.463.9 × 10 =
  39. 39.292.7 ÷ 10 =
  40. 40.167.9 × 10 =

Answer key

  1. 6600
  2. 369600
  3. 109.9
  4. 0.1678
  5. 0.0247
  6. 6090
  7. 454200
  8. 0.413
  9. 3601
  10. 256.4
  11. 3.005
  12. 3.732
  13. 41160
  14. 379
  15. 3444
  16. 31160
  17. 0.3751
  18. 18510
  19. 474.3
  20. 0.198
  21. 107.6
  22. 0.061
  23. 3387
  24. 0.02141
  25. 7740
  26. 23440
  27. 0.1577
  28. 4.439
  29. 15350
  30. 1.581
  31. 2226
  32. 1149
  33. 19010
  34. 1479
  35. 0.0418
  36. 2579
  37. 19.92
  38. 4639
  39. 29.27
  40. 1679

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