Imperfect Square Approximations (Sample)
Where should you place √
Closest perfect square less than 78
on the number line?
Closest perfect square greater than 78
64
81
_________________
__________________
Square root of this number
64
So, the √
Square root of this number
78
81
is between ___8___ and ___9____.
Now, approximate the answer to the nearest hundredth. How many spaces are there
between 64 and 81? 17 (Since 78 is in the 14th spot, you would divide 14/17 and get 0.82,
rounded to the nearest hundredth)
√
≈ 8.82