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

Identify the terms, their coefficients for the following expressions.

5xyz² − 3zy

Identify the terms, their coefficients for the following expressions.

1 + x + x²

Identify the terms, their coefficients for the following expressions.

4x²y² − 4x²y²z² + z²

Identify the terms, their coefficients for the following expressions.

3 − pq + qr − rp

Identify the terms, their coefficients for the following expressions.

`x/2 + y/2 - xy`

Identify the terms, their coefficients for the following expressions.

0.3a − 0.6ab + 0.5b

The shape of the top surface of a table is a trapezium. Find its area if its parallel sides are 1 m and 1.2 m and perpendicular distance between them is 0.8 m.

The area of a trapezium is 34 cm² and the length of one of the parallel sides is 10 cm and its height is 4 cm. Find the length of the other parallel side.

Length of the fence of a trapezium shaped field ABCD is 120 m. If BC = 48 m, CD = 17 m and AD = 40 m, find the area of this field. Side AB is perpendicular to the parallel sides AD and BC.

Top surface of a raised platform is in the shape of a regular octagon as shown in the figure. Find the area of the octagonal surface.

Evaluate.

3⁻²

Evaluate.

(−4)⁻²

Evaluate.

`(1/2)^(-5)`

Simplify and express the result in power notation with positive exponent.

(−4)⁵ ÷ (−4)⁸

Simplify and express the result in power notation with positive exponent.

`(1/2^3)^2`

Find the value of (3⁻¹ + 4⁻¹ + 5⁻¹)⁰

Find the value of `{((-2)/3)^(-2)}^2`

Find the value of m for which 5^m ÷5⁻³ = 5⁵.

Evaluate.

`{(1/3)^(-1) - (1/4)^(-1)}^(-1)`

Evaluate.

`(5/8)^(-7) xx (8/5)^(-4)`