This is a Guest Contribution from Fahim Laskkariya of Excel Data Pro. I have created some basic excel templates for addition, subtraction, multiplication and division. These templates will help kids practice more mathematics. These templates can be used by kids, teachers as well as parents. You can download the templates from the below links: Addition […]

## Mixture

In our everyday lives we are often required to mix two different substances for practical purposes- for example, we mix phenyl with water or dettol with water to wipe floors, tea manufacturers often mix tea from different regions like Assam and Darjeeling in different proportions to produce a blended tea. The substance obtained by this […]

## Average

The average o two or more similar quantities is the quantity obtained by dividing the sum of the quantities by the number of quantities. Also, The average value of a quantity need not be the usual value of the quantity. It need not even be the value that occurs most often. For example, if three […]

## Elementary Estimation

Suppose, there is going to be a big event at your workplace or school. And you have to make an estimate the number of guests that will come to the event, because food, place etc need to be arranged for them. Is it possible to know the exact number of guests that will be coming?

## Divisibility Rules

Divisibility rules make it easier for us to determine whether a certain number x is divisible by another number y or not.

## Fractions

If an apple is divided into five equal parts, each part is said to be one fifth of the whole apple. If out of these five equal parts, 2 parts are eaten, we say two-fifth of the apple is eaten or three-fifth of the apple is left.

## Understanding Decimals

A decimal fraction (or, a decimal number) is a fraction whose denominator is 10 or a higher power of 10.

## Unitary Method

The method in which the value of a unit quantity is first calculated to get the value of other quantity is called the unitary method. In unitary method we have two types of variations : direct and inverse.

## Speed: Unit of Speed, Variable and Average Speed …

Speed of a body is the distance covered by the body in unit time. Therefore Speed is Distance upon Time which implies that Distance is Speed times Time or Time is Distance upon Speed.

## Ratio and Proportion

In comparing two quantities of the same kind, the fraction, which expresses by how many times the first quantity is greater or smaller than the second quantity is called the ‘ratio’ between the quantities. When the values of two ratios are equal, they are said to be in ‘proportion’ and one is called proportional to the other.