• ## Playing with Numbers – Chapter 1 – Class VIII

1.1.1 Introduction Numbers have played important role in the development of the mankind. This still forms a perfect play ground for activities of children. 1.1.2 Numbers in general form – Playing with Numbers Consider the number 45. We write this as 45 = 40 + 5 = (4 x 10) + (5 x 1) Similarly, […]

• ## Playing with Numbers

1.1.1 Introduction Numbers have played important role in the development of the mankind. This still forms a perfect play ground for activities of children. 1.1.2 Numbers in general form Consider the number 45. We write this as 45 = 40 + 5 = (4 x 10) + (5 x 1) Similarly, 34 = […]

• ## Complex Number

A complex number is a number that can be expressed in the form a + bi, where a and b are real numbers and i is the imaginary unit, satisfying the equation i2 = −1. In this expression, a is the real part and b is the imaginary part of the complex number

• ## Cube

A cube is a three-dimensional solid object bounded by six square faces, facets or sides, with three meeting at each vertex. A cuboid whose length, breadth and height are all equal is called cube.  A cube has 12 edges, 8 vertices and 6 faces. Formula to find the volume of a cube : a³ Formula to find […]

• ## Cube root

If N is number and n is another number such that N = n3, we say n is the cube root of N and write n = ∛n Example: Find the cube root of 216 by factorization. Solution: 216 = 2 x (108) = 2 x 2 x 54 = 2 x 2 x 2 x 27 […]

• ## Cuboid

Cuboid is a three-dimensional shape with a length, width, and a height, it is more or less cubic in shape. Cuboid has 6 faces, 12 edges and 8 vertices. Any face of the cuboid is called its base. Each face of a cuboid is a rectangle, and all of a cuboid’s vertices are 90-degree angles. Thus, […]

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