Mathematics, 09.04.2020 08:43 kashmoney8690

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.

Answers: 3

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Identifying an Error
A student estimated the sum
7.95 + 8.11 + 78.5 +8.05 + 79.4 +0.815...