We have learned and studied different types of numbers in our previous grades. They are natural numbers (starting from 1), whole numbers (starting from 0), integers (the combination of positive and negative numbers). In this chapter, we will study the Rational Numbers. Rational Numbers as we know are any numbers expressed in fraction, i.e in …
What do we mean by an equation? An expression is said to be an ‘equation’, when there is the left side and the right side, with the ‘equality’ sign in the centre. On the other hand, when an equation contains only a single variable, with the highest power of one, it is said to be …
What do you think a notebook, a matchbox and a mobile phone have in common? All these figures have four sides, and any structure with four sides is termed as ‘Quadrilateral’. The word itself gives us an idea of its meaning as the word ‘Quadri’ stands for ‘Four’ and the word ‘Lateral’ stands for ‘Sides’. …
In the previous chapter, we got introduced to the world of “Quadrilaterals”. Square, rectangle, rhombus are a few examples in this category. What if we tell you that you can construct a quadrilateral on your own? Wondering how? Well, some tools help you construct a quadrilateral. These tools not only help you build the entire …
Suppose you have to have Rs. 50/-, out of which you are told to keep Rs. 30/- to yourself. Excited, you go out to buy some chocolates. You know that your favourite chocolate costs Rs. 5 for each. And you need to buy 5 chocolates. What is the amount that you will get in return? …
Look closely at the minute and the hour hand of the wall clock. You will observe that both these hands make an angle between them. What is the angle? An angle in Geometry is a shape, formed by two lines or rays diverging from a common point. They help us to figure out the degree …
Pizza is one of the most loved foods around the globe. But did you notice the shape of a pizza slice? This shape is a triangle. What do we mean by triangle? A triangle is a closed figure formed by three straight lines. It is made up of three angels and three vertices. The sum …
Place your left palm over your right palm. Now closely observe. All fingers of your left palm are as same as your right palm. Such an exact similarity is referred to as the ‘property of Congruence’ in geometry. The property of congruence can be studied by closely observing different shapes and figures. In this chapter, …
Understanding the difference between any two quantities is very important. The distinction helps us to identify which quantity is bigger and which is smaller. In this chapter, we will understand how to compare quantities, based on different factors. Here, we will learn about the profit-loss calculations, the percentage calculations and simple interest. This chapter will …
Numbers that start from zero are called as ‘Whole Numbers’. Numbers that come naturally are called as ‘Natural Numbers’. Numbers that are the combination of positive and negative numbers are called as ‘Integers’. We have learned all of these in our previous lessons. In this chapter, we will understand ‘Rational Numbers’. These are the numbers …
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