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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 696 · 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. 1.30.51 × 10 =
  2. 2.446.5 ÷ 10 =
  3. 3.17.38 × 100 =
  4. 4.38.97 ÷ 10 =
  5. 5.491.8 ÷ 1000 =
  6. 6.38.27 × 10 =
  7. 7.49.09 ÷ 10 =
  8. 8.4.01 ÷ 10 =
  9. 9.333.3 × 100 =
  10. 10.44.1 × 100 =
  11. 11.7.46 × 1000 =
  12. 12.43.29 ÷ 100 =
  13. 13.462.2 × 1000 =
  14. 14.12.96 × 1000 =
  15. 15.69.5 × 10 =
  16. 16.27.45 × 10 =
  17. 17.12.36 ÷ 10 =
  18. 18.9.18 ÷ 100 =
  19. 19.188.2 × 1000 =
  20. 20.290.4 ÷ 100 =
  21. 21.105.3 ÷ 1000 =
  22. 22.33.22 ÷ 1000 =
  23. 23.10.96 ÷ 100 =
  24. 24.147.4 × 100 =
  25. 25.45.61 ÷ 1000 =
  26. 26.108.1 ÷ 10 =
  27. 27.83.1 × 10 =
  28. 28.475.9 × 10 =
  29. 29.192.7 × 100 =
  30. 30.0.35 ÷ 1000 =
  31. 31.5.51 ÷ 10 =
  32. 32.100.3 × 100 =
  33. 33.132.7 ÷ 100 =
  34. 34.17.38 ÷ 1000 =
  35. 35.334.1 ÷ 10 =
  36. 36.45.42 × 1000 =
  37. 37.231.3 × 100 =
  38. 38.174.4 × 10 =
  39. 39.30.05 × 100 =
  40. 40.229.6 × 10 =

Answer key

  1. 305.1
  2. 44.65
  3. 1738
  4. 3.897
  5. 0.4918
  6. 382.7
  7. 4.909
  8. 0.401
  9. 33330
  10. 4410
  11. 7460
  12. 0.4329
  13. 462200
  14. 12960
  15. 695
  16. 274.5
  17. 1.236
  18. 0.0918
  19. 188200
  20. 2.904
  21. 0.1053
  22. 0.03322
  23. 0.1096
  24. 14740
  25. 0.04561
  26. 10.81
  27. 831
  28. 4759
  29. 19270
  30. 0.00035
  31. 0.551
  32. 10030
  33. 1.327
  34. 0.01738
  35. 33.41
  36. 45420
  37. 23130
  38. 1744
  39. 3005
  40. 2296

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