A polygon is a simple figure formed by connecting line segments. These line segments do not cross each other. Triangles and quadrilaterals (rectangles, squares, etc.) are examples of polygons. TRIANGLES The word triangle means three angles. The given triangle has three angles ∠A, ∠B and ∠C. Points A, B and C are the …

Read More »## NCERT 5th Class (CBSE) Mathematics: Lines And Angle

CHECK IN A protractor is used to measure angles. This angle is measured on the inner scale as the baseline arm point to 0° on the inner scale. The other arm crosses 50° showing that ∠ AOB = 50°. Angles are named according to their measures.

Read More »## NCERT 5th Class (CBSE) Mathematics: Graphical Representation

Sometimes when we have a lot of information about things, it helps us to organize the information or data, as also called, Into graphs. Graphs also help us understand and use the information in a proper manner. Graphs are pictorial or diagrammatic representations of data. PICTOGRAPHS Pictograph use pictures or …

Read More »## NCERT 5th Class (CBSE) Mathematics: Application Of Percentage

PROFIT AND LOSS Mr Gupta makes very good rocking chairs. It coast him Rs. 795 to make one rocking chair. He sells it in his furniture shop at Rs. 900. Rs. 795 is the Cost Price (CP) of the chair. Rs. 900 is the Selling Price (SP) of the chair. …

Read More »## NCERT 5th Class (CBSE) Mathematics: Percentage

Anisha collects ancient coins. She has collected 100 coins of which 43 coins. We can express this in many ways. Using fractions we can say 43/100 of her coins are Indian coins. Using decimals we can say 0.43 coins of her collection are Indian coins. We can also express this …

Read More »## NCERT 5th Class (CBSE) Mathematics: Ratio And Proportion

Yash is an artist trying to find the perfect shade of green for his new painting. He is mixing. He is mixing tubes of yellow and blue paint to find his ‘perfect’ green. Subtraction is one way to compare the quantities of yellow and blue paint that Yash used 2 …

Read More »## NCERT 5th Class (CBSE) Mathematics: Decimals

The place value of a digit decreases every time it move to the right. It gets ten times smaller for every move to the right. The Decimals point is always placed after the ones place. After the decimal point, the place values are tenths, hundredths, thousandths, … All these places …

Read More »## NCERT 5th Class (CBSE) Mathematics: Fractions

A faction shows a part of a whole. A whole can be region or a collection. You are familiar with these fractions. Like Fractions: Fractions that have same denominator are called like fractions, e.g., 3/7, 5/7, 1/7 Unlike fractions: Factions that have different denominators are called unlike fractions, e.g., 4/7, …

Read More »## NCERT 5th Class (CBSE) Mathematics: Order Of Operations

WHO IS RIGHT? Meera: 3+4×8 = 56 Manu: 3+4×8 = 35 Meera and Manu were both given the same question to solve. Notice that they both got different answer because Meera added first and Manu multiplied first. To be sure that there should be only one answer for sums like …

Read More »## NCERT 5th Class (CBSE) Mathematics: The Four Operations And Their Application

ADDITION AND SUBTRACTION Properties of Addition: When you change the order of the addends, the sum does not change. The sum of any number and zero is that same number. Adding large numbers is the same as adding smaller numbers. You start from the ones place and regroup (carry over) …

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