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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 135 · 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. 1.7.29 × 100 =
  2. 2.13.6 × 10 =
  3. 3.33.97 × 100 =
  4. 4.49.9 × 100 =
  5. 5.16.49 × 100 =
  6. 6.426.1 × 100 =
  7. 7.14.48 × 1000 =
  8. 8.252.4 ÷ 100 =
  9. 9.16.45 ÷ 1000 =
  10. 10.394.9 ÷ 10 =
  11. 11.161.9 ÷ 1000 =
  12. 12.16.25 ÷ 10 =
  13. 13.111.2 ÷ 100 =
  14. 14.39.34 ÷ 100 =
  15. 15.25.68 ÷ 10 =
  16. 16.437.9 × 1000 =
  17. 17.102.9 ÷ 10 =
  18. 18.26.68 ÷ 10 =
  19. 19.108.7 ÷ 100 =
  20. 20.76.2 × 10 =
  21. 21.175.7 ÷ 10 =
  22. 22.198.9 ÷ 100 =
  23. 23.320.1 × 10 =
  24. 24.18.82 × 1000 =
  25. 25.9.41 ÷ 100 =
  26. 26.37.04 ÷ 1000 =
  27. 27.5.81 × 10 =
  28. 28.129.1 ÷ 10 =
  29. 29.23.93 ÷ 100 =
  30. 30.21.2 ÷ 1000 =
  31. 31.344.5 × 100 =
  32. 32.19.65 × 100 =
  33. 33.7.61 × 1000 =
  34. 34.33.47 ÷ 10 =
  35. 35.194.9 ÷ 100 =
  36. 36.33.41 × 1000 =
  37. 37.143.7 × 100 =
  38. 38.97.5 × 1000 =
  39. 39.12.18 × 10 =
  40. 40.60.8 × 10 =

Answer key

  1. 729
  2. 136
  3. 3397
  4. 4990
  5. 1649
  6. 42610
  7. 14480
  8. 2.524
  9. 0.01645
  10. 39.49
  11. 0.1619
  12. 1.625
  13. 1.112
  14. 0.3934
  15. 2.568
  16. 437900
  17. 10.29
  18. 2.668
  19. 1.087
  20. 762
  21. 17.57
  22. 1.989
  23. 3201
  24. 18820
  25. 0.0941
  26. 0.03704
  27. 58.1
  28. 12.91
  29. 0.2393
  30. 0.0212
  31. 34450
  32. 1965
  33. 7610
  34. 3.347
  35. 1.949
  36. 33410
  37. 14370
  38. 97500
  39. 121.8
  40. 608

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