In this worksheet, we will practise estimating square roots.
Method
We know the square numbers from 12 to 122
i.e., 12 = 1, 22 = 4, 32 = 9 etc.
We can estimate the square roots of numbers between the square numbers.
√7 is between √4 and √9 ie. 2 and 3.
So √7 is approximately 2.6 (7 is nearer to 9 than to 4)
√59 is between √49 and √64 between 7 and 8.
approximately 7.7 (nearer to 8).