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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 890 · 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. 1.234.4 × 1000 =
  2. 2.42.15 ÷ 10 =
  3. 3.256.3 × 100 =
  4. 4.32.29 ÷ 10 =
  5. 5.89.1 ÷ 10 =
  6. 6.29.81 ÷ 100 =
  7. 7.164.6 × 1000 =
  8. 8.11.21 × 1000 =
  9. 9.196.2 ÷ 10 =
  10. 10.424.1 × 1000 =
  11. 11.30.41 ÷ 1000 =
  12. 12.28.28 ÷ 10 =
  13. 13.122.1 ÷ 1000 =
  14. 14.57.3 × 1000 =
  15. 15.18.79 ÷ 10 =
  16. 16.33.62 ÷ 100 =
  17. 17.20.1 × 100 =
  18. 18.405.5 ÷ 100 =
  19. 19.140.2 × 10 =
  20. 20.432.4 ÷ 1000 =
  21. 21.40.71 × 1000 =
  22. 22.326.1 ÷ 1000 =
  23. 23.40.35 × 100 =
  24. 24.31.55 ÷ 100 =
  25. 25.7.94 ÷ 100 =
  26. 26.395.9 × 1000 =
  27. 27.136.8 × 10 =
  28. 28.133.2 ÷ 100 =
  29. 29.39.99 × 10 =
  30. 30.20.87 × 100 =
  31. 31.245.9 ÷ 10 =
  32. 32.384.9 ÷ 1000 =
  33. 33.412.1 ÷ 10 =
  34. 34.315.5 ÷ 1000 =
  35. 35.47.17 × 100 =
  36. 36.288.5 × 1000 =
  37. 37.488.3 ÷ 10 =
  38. 38.15.51 × 10 =
  39. 39.296.8 × 1000 =
  40. 40.52.5 × 1000 =

Answer key

  1. 234400
  2. 4.215
  3. 25630
  4. 3.229
  5. 8.91
  6. 0.2981
  7. 164600
  8. 11210
  9. 19.62
  10. 424100
  11. 0.03041
  12. 2.828
  13. 0.1221
  14. 57300
  15. 1.879
  16. 0.3362
  17. 2010
  18. 4.055
  19. 1402
  20. 0.4324
  21. 40710
  22. 0.3261
  23. 4035
  24. 0.3155
  25. 0.0794
  26. 395900
  27. 1368
  28. 1.332
  29. 399.9
  30. 2087
  31. 24.59
  32. 0.3849
  33. 41.21
  34. 0.3155
  35. 4717
  36. 288500
  37. 48.83
  38. 155.1
  39. 296800
  40. 52500

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