Class 7

Equations

Image Credit: Pixabay.com An Equation When we solve any mathematical problem our answer must be in accordance with th…

Algebraic Expression

Image Credit: Pixabay.com Algebra Concept of algebra originated as a problem solving technique in which unknown numb…

Simple Interest

Image Credit: Pixabay.com   Principal Borrowed money is called Principal. Time Period  Period of time for which mo…

Profit and Loss

Image Credit: Pixabay.com Cost Price (CP)  The buying price of any item is known as its cost price.It is written in s…

Percentage

Image Credit: Pixabay.com ➤ We know how to compare fractions. In case of unlike fractions , first we get their equival…

Ratio & Proportion

Image Credit: Pixabay.com Comparing Quantities (same type) Compare by Difference - by how much ? e.g. Cost of a ca…

Exponents & Powers

Image Credit: Pixabay.com Mass of earth = 5,970,000,000,000,000,000,000,000 kg Mass of Uranus = 86,800,000,000,000,00…

Rational Numbers

Image Credit: Pixabay.com So far, we have studied about the following set of numbers Natural number,  N = {1, 2, 3, ..…

Multiplication & Division of Decimals

Multiplication of Decimals 1 / 10 of  1 / 10  =  1 / 10  ×  1 / 10  =  1 / 100 ⇒ 0.1 × 0.1 = 0.01 2 / 10  ×  2 / 10 …

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