Open a notebook, and carefully observe the right-hand side and the left-hand side of it. You will observe that both parts are exactly the same. We can say they are symmetrical. Now there is a dividing line between the left side and the right side, that’s called the axis of symmetry. If you observe carefully …
Can you tell us the difference between a rectangular drawing and a rectangular box? If you are thinking that both are one and the same, then you are wrong. A rectangular drawing is a 2D shape because it has two important factors – i.e the length and the breadth. Whereas a rectangular box is a …
Multiplication of Integers In the previous grade, we have already learned about Integers. In this chapter, we will add to that knowledge and advance our skills to carry out calculations with integers. Integers come with different properties that help us in their calculation. For instance – one of the properties of integers is – Closure …
You have drawn a square-shaped figure. Now, you are asked to divide that into four equal parts? How would you do it? It’s simple. You can divide the square into four equal parts by drawing two straight lines from the centre of two sides to the opposite side. But what if we ask you to …
You have 10 numbers ranging from 1 to 10, which are randomly arranged. These numbers make up your data. Now, if asked to find the smallest and the biggest number, you would simply arrange your data in an ascending order and provide your answer. This process is referred to as ‘Data Analysis’. Now to find …
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, …
As learned in the previous chapters, numbers that start with Zero are called ‘Whole Numbers’, on the other hand, numbers that come naturally, such as 1,2,3, and so on are called ‘Natural Numbers’. But what if we tell you that there are numbers that are placed before zero? Baffled? Don’t worry. There are a group …
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