walkerjamauriah
contestada

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.

Respuesta :

loserluna

Answer:

The numbers are not clustered around a common number. Two of the numbers are very large and one is very small.

Step-by-step explanation:

hope this helps

The reason is that the round off wasn't done in a correct manner.

What is decimal?

Decimals are the numbers, which consist of two parts namely, a whole number part and a fractional part separated by a decimal point.

Given:

7.95 + 8.11 + 78.5 + 8.05 + 79.4 + 0.815

The round off will be as follows:

8 + 8+ 79 + 8+  79 + 0.9

= 182.9

Hence, the clustered point for three numbers are not correct.

Learn more about this concept here:

https://brainly.com/question/4302459

#SPJ2

Otras preguntas