## How to multiply any number by 101?

In this tutorial, we are going see an interesting class of numbers like 101, 203, 10001, 201 etc. Notice an important thing here. You have 2 different numbers (may be same or different) at the end and you have 1 or… Continue Reading

## How to obtain the squares of the numbers ending in 95?

This shortcut is really cool. Using this shortcut, you can obtain the squares of any number which ends in 95. For example, numbers such as 195, 295, 595 etc. Let’s say, we want to calculate the square of… Continue Reading

## How to Square Numbers Ending in 05 ?

This is an interesting find. While teaching students on obtaining the square of any number, I observed an amazing patterns in the squares of the number which ends with the digits 05 like 105, 205, 1105 etc. You already… Continue Reading

## How to find the day of a January 1st ?

This has to be an absolute classic of a shortcut that I came across  in the book “Secrets of Mental Maths”. Using this shortcut, you can find the day of January 1st of any year after 2000. Mind you… Continue Reading

## HCF and LCM

Questions on HCF and LCM are the most common in the competitive examinations.  We have already studied HCF & LCM in our elementary schools.  Let’s recall from our memory.   Highest Common Factor (HCF)   Highest Common Factor (HCF) or… Continue Reading