Question

Which is the best approximation for the value of √102?
A.10
B.11
C.50
D.51

Answer 1

10, because when you use a scientific calculator you get 10.09950494
which would be round to 10 because after the decimal the number is 0 below 5 so 10 stays as 10

Answer 2

We know that √100 = 10,
so √102 is approximately 10