Question: Estimate this sum: 3.068 + 12.42 + 5.7 How did you get your estimate? Now determine the exact answer. Does your estimate make sense? How

  • Estimate this sum:3.068 + 12.42 + 5.7How did you get your estimate?
  • Now determine the exact answer. Does your estimate make sense? How did you get your exact answer?
  • Use that method on this sum:
  • 3.14 + 26.2Why do you think your method works? Will your method work for subtraction
  • Explain how the line- up- the- decimals rule for adding and subtracting can be developed through practice with estimation.
  • Give an example explaining how, in many problems, multiplication and division with decimals can be replaced with estimation and whole-number methods.

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