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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 412 · 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. 1.405.2 × 1000 =
  2. 2.22.16 ÷ 1000 =
  3. 3.327.4 ÷ 1000 =
  4. 4.202.5 × 1000 =
  5. 5.24.51 ÷ 100 =
  6. 6.451.5 × 1000 =
  7. 7.20.85 ÷ 1000 =
  8. 8.384.5 ÷ 10 =
  9. 9.364.7 × 100 =
  10. 10.270.1 × 10 =
  11. 11.222.1 ÷ 1000 =
  12. 12.57.7 ÷ 100 =
  13. 13.396.1 ÷ 1000 =
  14. 14.301.1 ÷ 1000 =
  15. 15.55.5 × 10 =
  16. 16.19.76 × 10 =
  17. 17.28.3 × 1000 =
  18. 18.426.5 × 1000 =
  19. 19.335.1 ÷ 100 =
  20. 20.90.1 × 10 =
  21. 21.5.27 ÷ 100 =
  22. 22.34.24 ÷ 1000 =
  23. 23.13.59 ÷ 100 =
  24. 24.39.21 × 1000 =
  25. 25.36.33 ÷ 10 =
  26. 26.23.2 ÷ 100 =
  27. 27.3.71 × 1000 =
  28. 28.26.38 ÷ 100 =
  29. 29.462.9 × 100 =
  30. 30.174.7 ÷ 100 =
  31. 31.49.99 × 10 =
  32. 32.497.4 ÷ 100 =
  33. 33.44.4 ÷ 1000 =
  34. 34.135.8 ÷ 1000 =
  35. 35.38.5 ÷ 10 =
  36. 36.356.4 × 10 =
  37. 37.329.6 × 10 =
  38. 38.38.01 ÷ 10 =
  39. 39.227.4 ÷ 10 =
  40. 40.20.6 × 1000 =

Answer key

  1. 405200
  2. 0.02216
  3. 0.3274
  4. 202500
  5. 0.2451
  6. 451500
  7. 0.02085
  8. 38.45
  9. 36470
  10. 2701
  11. 0.2221
  12. 0.577
  13. 0.3961
  14. 0.3011
  15. 555
  16. 197.6
  17. 28300
  18. 426500
  19. 3.351
  20. 901
  21. 0.0527
  22. 0.03424
  23. 0.1359
  24. 39210
  25. 3.633
  26. 0.232
  27. 3710
  28. 0.2638
  29. 46290
  30. 1.747
  31. 499.9
  32. 4.974
  33. 0.0444
  34. 0.1358
  35. 3.85
  36. 3564
  37. 3296
  38. 3.801
  39. 22.74
  40. 20600

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