Question

What is the error when cach of these numbers is given to 1 significant figure a)7.2

Answer 1

Given numver is 7.2.

Since there is 2 in the tenth place which is less than 5, then, in one significant figure, it can be written as 7.

The error is

$7.2-7=0.2$

So, when the number is given to the one significant figure, the error is 0.2.