Squares and odd numbers The series of first n odd square numbers are 1, 9, 25, 49, 81, 121…… When we add, odd numbers we get square numbers. 1. First odd number is 1, and square of 1 is (1 x 1 = 1) 2. Next odd number is 3, total of 1 and […]
Read More →Problems and Solutions Percentage wise distribution of players who play four different games are given in below pie graph and total number of players are 1200. Example1: What is the total number of players who play cricket and rugby? Solution: Total number of players are 1200, Percentage of players who play cricket = 12% Percentage of players who play rugby […]
Read More →Convert Decimal into Percentage To converting decimal into percentage, simply multiply by 100 and add percent sign %. Example: convert 0.45 into percent. Solution: to convert 0.45 into percent we multiply o.45 by 100, we get 0.45 x 100 […]
Read More →Sets and Venn Diagrams The relationship between sets can be represented by diagrams is known as Venn Diagrams. In venn diagrams, 1. A rectangle is represent a universal set. 2. Circles or ovals are represent other subsets of the universal set. Example: The set of Natural numbers is a subset of set of Whole numbers, which […]
Read More →Supplementary and Complementary Angels To understand supplementary and complementary angles, first we need to understand the adjacent angles. Adjacent angle Two angles that have a common vertex and a common side but not overlap, are known as adjacent angles. Complementary Angles When the total of […]
Read More →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 […]
Read More →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. […]
Read More →Mean Value – Word problems In this lesson we will learn about mean. We will also learn how to find mean of given data and solve word problems on mean. How to calculate mean Example: (1)What is the mean of 1, 2, 5, and 4. Solution : Mean = Sum of observations/Number of observations the numbers […]
Read More →Addition of One When we add one to any number the total will be next number of the number. While adding one to any number Changing the order of numbers, total does not change. When we add one to any number and get next number that is called the Successor. 0 + 1 = 1 […]
Read More →Rules – Addition of Integers There are two conditions when adding integers. Rule 1: When integers have same sign. Rule 2: When integers have opposite sign. (a) When integers have same sign. (b) When integers have opposite sign. a. Integers having (same)positive sign. When we add two positive integers means both […]
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