Use the clustering estimation technique to find the approximate total in the following question. What is the estimated sum of 105, 101, 139, and 78?

Question

Mathematics

Johnston

6 May, 01:16

Use the clustering estimation technique to find the approximate total in the following question. What is the estimated sum of 105, 101, 139, and 78?

+5

Answers (2)

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Brewster · Answer 1

cluster estimation is to estimate sums when the numbers being added cluster near in value to a single number. it is 100 in this case.

estimate sum = 100x4 = 400

Celia Mckay · Answer 2

105, 101, 139, and 78 all cluster around 100

so estimated sum = 4 * 100

= 400