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

Find the least number which must be subtracted from the following number so as to get a perfect square. Also find the square root of the perfect square so obtained.

1989

Find the least number which must be subtracted from the following number so as to get a perfect square. Also find the square root of the perfect square so obtained.

3250

Find the least number which must be subtracted from the following number so as to get a perfect square. Also find the square root of the perfect square so obtained.

825

Find the least number which must be subtracted from the following number so as to get a perfect square. Also find the square root of the perfect square so obtained.

4000

Find the least number which must be added to the following number so as to get a perfect square. Also find the square root of the perfect square so obtained.

525

Find the least number which must be added to the following number so as to get a perfect square. Also find the square root of the perfect square so obtained.

1750

Find the least number which must be added to the following number so as to get a perfect square. Also find the square root of the perfect square so obtained.

252

Find the least number which must be added to the following number so as to get a perfect square. Also find the square root of the perfect square so obtained.

1825

Find the least number which must be added to the following number so as to get a perfect square. Also find the square root of the perfect square so obtained.

6412

A gardener has 1000 plants. He wants to plant these in such a way that the number of rows and the number of columns remain same. Find the minimum number of plants he needs more for this.

These are 500 children in a school. For a P.T. drill they have to stand in such a manner that the number of rows is equal to number of columns. How many children would be left out in this arrangement?

Find the product of the following pair of monomial.

4, 7p

Find the product of the following pair of monomial.

− 4p, 7p

Find the product of the following pair of monomial.

− 4p, 7pq

Find the product of the following pair of monomial.

4p³, − 3p

Find the product of the following pair of monomial.

4p, 0

Find the areas of rectangles with the following pairs of monomials as their lengths and breadths, respectively.

(p, q); (10m, 5n); (20x², 5y²); (4x, 3x²); (3mn, 4np)

Complete the table of products.

Obtain the volume of a rectangular box with the following length, breadth, and height, respectively.

5a, 3a², 7a⁴