What is 5% of 88.5cm?

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Answer 1 · 2017-01-01T21:35:16

Introduction to a way of thinking about numbers.

#4.425#

5% is just another way of writing #5/100#

So we have #5/100" of "88.5" "->" "5/100xx88.5#

This is the same as #5xx(88.5)/100 = 5xx0.885#

But 5 is #1/2xx10#

So we can write #5xx0.885" as "1/2xx10xx0.885#

#=1/2xx8.85 = 4.425#