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

Find the square root of the following decimal number.

2.56

Find the square root of the following decimal number.

7.29

Find the square root of the following decimal number.

51.84

Find the square root of the following decimal number.

42.25

Find the square root of the following decimal number.

31.36

Calculate the amount and compound interest on Rs 10800 for 3 years at `12 1/2` % per annum compounded annually.

Calculate the amount and compound interest on  Rs 18000 for `2 1/2` years at 10% per annum compounded annually.

Calculate the amount and compound interest on Rs 62500 for `1 1/2` years at 8% per annum compounded half yearly.

Calculate the amount and compound interest on Rs 8000 for 1 year at 9% per annum compound half yearly. (You could use the year by year calculation using SI formula to verify)

Calculate the amount and compound interest on Rs 10000 for 1 year at 8% per annum compounded half yearly.

Carry out the multiplication of the expression of the following pair.

4p, q + r

Carry out the multiplication of the expression of the following pair.

ab, a − b

Carry out the multiplication of the expression of the following pair.

a + b, 7a²b²

Carry out the multiplication of the expression of the following pair.

a² − 9, 4a

Carry out the multiplication of the expression of the following pair.

pq + qr + rp, 0

Complete the table.

Find the product.

(a²) × (2a²²) × (4a²⁶)

Find the product.

`(2/3 xy) xx ((-9)/10 x^2y^2)`

Find the product.

`(-10/3 pq^3) xx (6/5p^3q)`

Find the product.

x × x² × x³ × x⁴