Secondary School (English Medium) (5 to 8) इयत्ता ८ - CBSE Question Bank Solutions for Mathematics

Find the amount and the compound interest on Rs 10,000 for `1 1/2` years at 10% per annum, compounded half yearly. Would this interest be more than the interest he would get if it was compounded annually?

Find the amount which Ram will get on Rs 4,096, he gave it for 18 months at `12 1/2` %per annum, interest being compounded half yearly.

Multiply the binomials.

(2x + 5) and (4x − 3)

Multiply the binomials.

(y − 8) and (3y − 4)

Multiply the binomials.

(2.5l − 0.5m) and (2.5l + 0.5m)

Multiply the binomials.

(a + 3b) and (x + 5)

Multiply the binomials.

(2pq + 3q²) and (3pq − 2q²)

Multiply the binomials.

`(3/4 a^2 + 3b^2) and 4(a^2 - 2/3 b^2)`

Find the Product.

(5 − 2x) (3 + x)

Find the product.

(x + 7y) (7x − y)

Find the product.

(a² + b) (a + b²)

Find the product.

(p² − q²) (2p + q)

Draw the graphs for the following tables of values, with suitable scales on the axes.

Cost of apples

Draw the graphs for the following tables of values, with suitable scales on the axes.

Distance travelled by a car

1. How much distance did the car cover during the period 7.30 a.m. to 8 a.m.?
2. What was the time when the car had covered a distance of 100 km since it's start?

Draw the graphs for the following tables of values, with suitable scales on the axes.

Interest on deposits for a year:

1. Does the graph pass through the origin?
2. Use the graph to find the interest on Rs 2500 for a year:
3. To get an interest of Rs 280 per year, how much money should be deposited?

Draw a graph for the following:

Is it a linear graph?

Draw a graph for the following:

Is it a linear graph?

Multiply the monomial by the binomial and find the value for x = −1, y = 0.25 and z = 0.05: 15y²(2 − 3x)

Multiply the monomial by the binomial and find the value for x = −1, y = 0.25 and z = 0.05: −3x(y² + z²)

Multiply the monomial by the binomial and find the value for x = −1, y = 0.25 and z = 0.05: z²(x − y)