Secondary School (English Medium) (5 to 8) Class 8 - CBSE Question Bank Solutions

By what numbers should each of the following be divided to get a perfect square? Also, find the number whose square is the new number. 

 3174

What should be added to \[\frac{- 7}{8}\]  so as to get \[\frac{5}{9}?\]

By what numbers should each of the following be divided to get a perfect square ? Also, find the number whose square is the new number. 

 1575 

What number should be added to \[\frac{- 5}{11}\] so as to get\[\frac{26}{33}?\]

Find the greatest number of two digits which is a perfect square.

What number should be added to \[\frac{- 5}{7}\] to get\[\frac{- 2}{3}?\]

Find the least number of three digits which is perfect square.

What number should be subtracted from \[\frac{- 5}{3}\] to get\[\frac{5}{6}?\]

Find the smallest number by which 4851 must be multiplied so that the product becomes a perfect suqare. 

Find the smallest number by which 28812 must be divided so that the quotient becomes a perfect square. 

Find the smallest number by which 1152 must be divided so that it becomes a perfect square. Also, find the number whose square is the resulting number.

The following number are not perfect squares. Give reason. 

 1547

The following number is  not perfect square. Give reason. 

45743

The following number is not perfect square. Give reason.

8948

The following number is not perfect square. Give reason. 

333333

What number should be subtracted from \[\frac{3}{7}\] to get\[\frac{5}{4}?\]

What should be added to \[\left( \frac{2}{3} + \frac{3}{5} \right)\] to get\[\frac{- 2}{15}?\]

Show that the following number is not perfect square: 

 9327 

What should be added to \[\left( \frac{1}{2} + \frac{1}{3} + \frac{1}{5} \right)\] to get 3?

Show that the following number is not perfect square:

4058