Fast Maths
To multiply a number by 9, the number should be multiplied by 10 first. Once
Fast Maths
You can calculate the square of two-digit numbers ending in 5 by following this simple
Fast Maths
To multiply an even number by 5, add a ‘0’ to half of the number.
Fast Maths
To multiply two-digit numbers by 11, add the digits in the tens and units place
Fast Maths
To subtract a three-digit number from 1,000 every number has to be subtracted from 9
Fast Maths
The addition of two-digit numbers can be performed in a simple way by splitting one
