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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 8 · 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. 1.403.4 × 10 =
  2. 2.337.9 ÷ 100 =
  3. 3.12.99 ÷ 100 =
  4. 4.390.2 × 1000 =
  5. 5.254.4 × 10 =
  6. 6.460.2 × 1000 =
  7. 7.19.11 × 100 =
  8. 8.21.82 ÷ 10 =
  9. 9.240.1 × 100 =
  10. 10.167.9 ÷ 100 =
  11. 11.45.61 ÷ 100 =
  12. 12.445.5 ÷ 1000 =
  13. 13.9.53 ÷ 100 =
  14. 14.139.3 ÷ 100 =
  15. 15.135.7 ÷ 100 =
  16. 16.164.5 × 100 =
  17. 17.165.4 ÷ 100 =
  18. 18.5.87 ÷ 100 =
  19. 19.38.68 ÷ 10 =
  20. 20.335.4 × 1000 =
  21. 21.33.1 × 10 =
  22. 22.32.02 ÷ 10 =
  23. 23.8.96 ÷ 100 =
  24. 24.246.1 × 100 =
  25. 25.2.09 ÷ 10 =
  26. 26.219.1 ÷ 10 =
  27. 27.47.65 ÷ 100 =
  28. 28.488.8 ÷ 1000 =
  29. 29.43.2 × 10 =
  30. 30.472.2 ÷ 1000 =
  31. 31.71.2 ÷ 10 =
  32. 32.150.2 × 100 =
  33. 33.327.4 ÷ 1000 =
  34. 34.17.36 × 1000 =
  35. 35.257.8 × 100 =
  36. 36.29.93 ÷ 100 =
  37. 37.17.09 × 1000 =
  38. 38.46.45 × 10 =
  39. 39.363.9 ÷ 1000 =
  40. 40.39.99 × 1000 =

Answer key

  1. 4034
  2. 3.379
  3. 0.1299
  4. 390200
  5. 2544
  6. 460200
  7. 1911
  8. 2.182
  9. 24010
  10. 1.679
  11. 0.4561
  12. 0.4455
  13. 0.0953
  14. 1.393
  15. 1.357
  16. 16450
  17. 1.654
  18. 0.0587
  19. 3.868
  20. 335400
  21. 331
  22. 3.202
  23. 0.0896
  24. 24610
  25. 0.209
  26. 21.91
  27. 0.4765
  28. 0.4888
  29. 432
  30. 0.4722
  31. 7.12
  32. 15020
  33. 0.3274
  34. 17360
  35. 25780
  36. 0.2993
  37. 17090
  38. 464.5
  39. 0.3639
  40. 39990

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