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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 148 · 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. 1.34.42 × 10 =
  2. 2.459.6 ÷ 1000 =
  3. 3.137.3 ÷ 100 =
  4. 4.342.8 × 100 =
  5. 5.104.5 ÷ 10 =
  6. 6.139.1 × 10 =
  7. 7.6.38 × 1000 =
  8. 8.60.9 ÷ 10 =
  9. 9.45.09 × 100 =
  10. 10.439.7 × 1000 =
  11. 11.39.66 × 1000 =
  12. 12.44.71 × 100 =
  13. 13.6.31 ÷ 1000 =
  14. 14.137.4 ÷ 100 =
  15. 15.374.3 ÷ 10 =
  16. 16.282.4 × 10 =
  17. 17.21.26 ÷ 1000 =
  18. 18.31.71 ÷ 10 =
  19. 19.32.64 ÷ 100 =
  20. 20.46.17 ÷ 100 =
  21. 21.49.35 × 100 =
  22. 22.123.2 ÷ 100 =
  23. 23.244.6 ÷ 10 =
  24. 24.248.1 ÷ 100 =
  25. 25.15.01 ÷ 100 =
  26. 26.11.84 × 1000 =
  27. 27.47.94 ÷ 10 =
  28. 28.115.7 ÷ 1000 =
  29. 29.35.31 ÷ 10 =
  30. 30.175.5 × 100 =
  31. 31.15.45 × 10 =
  32. 32.4.17 ÷ 10 =
  33. 33.18.37 ÷ 100 =
  34. 34.131.3 ÷ 100 =
  35. 35.70.8 ÷ 1000 =
  36. 36.375.3 ÷ 100 =
  37. 37.202.4 ÷ 1000 =
  38. 38.19.12 ÷ 10 =
  39. 39.12.59 × 10 =
  40. 40.28.19 × 100 =

Answer key

  1. 344.2
  2. 0.4596
  3. 1.373
  4. 34280
  5. 10.45
  6. 1391
  7. 6380
  8. 6.09
  9. 4509
  10. 439700
  11. 39660
  12. 4471
  13. 0.00631
  14. 1.374
  15. 37.43
  16. 2824
  17. 0.02126
  18. 3.171
  19. 0.3264
  20. 0.4617
  21. 4935
  22. 1.232
  23. 24.46
  24. 2.481
  25. 0.1501
  26. 11840
  27. 4.794
  28. 0.1157
  29. 3.531
  30. 17550
  31. 154.5
  32. 0.417
  33. 0.1837
  34. 1.313
  35. 0.0708
  36. 3.753
  37. 0.2024
  38. 1.912
  39. 125.9
  40. 2819

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