Abacus – Explain an abacus to a child An abacus is a traditional counting tool used for arithmetic calculations. It consists of a frame with rods or wires, each containing beads that can slide back and forth. The abacus is often considered one of the earliest counting devices, and it’s still used in various cultures […]

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Addition of Decimal numbers 1. John bought 5kg 70g of grapes, 3kg 50g apple and 4kg 200g of mangoes. Find the total weight of all the fruits he bought? Solution:                1000g = 1kg                               70g = 1/1000 x 70/1                                 […]

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Arithmetic Mean  Definition: The sum of the numerical values of each and every observation, that is divided by the total number of observations is equal to “Arithmetic Mean”.  Arithmetic Mean is also called average or mean. The Arithmetic Mean or mean or average is defined as,  Symbol:             X  = (𝚺xi)/n X = Mean […]

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 Addition – Definition and Examples In this section we will learn the basics of addition. (+) addition is a basic operation of arithmetic. To bring two or more numbers together and make a new number, is known as sum, add or total. Total is amount of two or more numbers or things.       […]

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Mixed Numbers Definition: A “Mixed Number” is combination of a whole number and a fraction. Example: If we have two whole cakes and one half cake, then we describe this as 2 and 1/2 cakes or 2 1/2 cakes. 2 1/2 (Two and a half) is a mixed number.It is also called Mixed fraction. Writing mixed numbers as fraction Mixed numbers can […]

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Representation of numbers on Number Line Natural numbers Natural numbers : A set of counting numbers, is known as natural numbers. N = (1, 2, 3, 4, 5,…..) This is a number line for Natural Numbers. Whole numbers Whole numbers : When we add the number zero (0) to the natural numbers, we get whole numbers. W = […]

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Simultaneous equations by Elimination Method Steps for solve linear equations with elimination method. Step 1: First we arrange both equations in standard form, placing like variables and constants one above the other. Step 2: Choose a variable (x or y) to eliminate, Multiply both equations by a suitable(non zero) constant to make the coefficients of one […]

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