Addition
Addition When we were at school, we have been taught how to sum two or more numbers together by using the right to left approach. With this method, you first sum the decimal part of the number, then you move to the hundreds and so on. This works good on paper, but it’s a pain when you’re doingmental calculations. Fortunately, the solution is very easy. Left to right approach Instead of using a right to left approach, we can start from the left and move to theright. Take the following example: Usually, you would first sum up 4 to 45, and then and 30 to the result. But by using the left to right approach, you first sum up 30 to 45, and then you add 4 to the result. Although this exampleis very simple, you’ll see theadvantages of this method as you start to use it. If you’re working with three digits numbers, the process is the same. For example 45+34 now, (45+30)=(75+4)=79 This example is a bit more complicated than the previous one, yet it’s very easy to solve using the left t