Eight Grade Math

 In the previous post we have discussed about Math for 8th graders and In today's session we are going to discuss about Eight Grade Math.


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In Eight Grade Math, we study different topics related to numbers. We come across the chapter of Rational numbers. In rational numbers, we study about how rational numbers are formed, their standard form, the positive and the negative rational numbers and how to express the series of rational numbers on a number line.

Further we also learn in Eight Grade Math, about how to compare two rational numbers and how to perform the mathematical operations on rational expressions. We study different properties of rational numbers too.

Here are some of the properties of rational numbers:

1. Closure Property: By closure property we mean that if we have two rational numbers, then sum, difference, product and quotient of two rational numbers is also a rational number.

2. While talking about the Commutative property of rational numbers, we say that it holds true for addition and multiplication of rational numbers but not for the subtraction and the division operation, so if the two rational numbers are p1/ q1 and p2/q2, then we get :

(p1 / q1 + p2 / q2) = (p2 / q2 + p1 / q1)

(p1 / q1 * p2 / q2) = (p2 / q2 *  p1 / q1)

(p1/q1 - p2 / q2) < > (p2 / q2  - p1 / q1)

(p1/q1 divided by p2 / q2) < > (p2 / q2 divided by p1 / q1).

To know about the Lateral Area of a Cylinder, we can learn the formula from online math tutor help, which is available for free. We can also download the cbse syllabus for class 11, from Internet, which is available on website of cbse.