A student estimated the sum 7.95 +8.11 +78.5+ 8.05 + 79.4 +0.815 as: All the numbers begin with a 7 or 8, so use cluster estimation. 8 + 8 + 80+ 8 + 80+ 0.8 = 184.8

Algebra and Trigonometry (6th Edition)
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ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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**Adding and Subtracting Decimals Assignment**  
Active

### Identifying an Error

A student estimated the sum:  
7.95 + 8.11 + 78.5 + 8.05 + 79.4 + 0.815 as:
   
All the numbers begin with a 7 or 8, so use cluster estimation.

8 + 8 + 80 + 8 + 80 + 0.8 = 184.8

**Explain why this reasoning is not accurate:**

[Provide your explanation here]
Transcribed Image Text:**Adding and Subtracting Decimals Assignment** Active ### Identifying an Error A student estimated the sum: 7.95 + 8.11 + 78.5 + 8.05 + 79.4 + 0.815 as: All the numbers begin with a 7 or 8, so use cluster estimation. 8 + 8 + 80 + 8 + 80 + 0.8 = 184.8 **Explain why this reasoning is not accurate:** [Provide your explanation here]
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