 Good afternoon friends, this is Sarita Dayan from Governey D.M. School, Chinchwar. Today I am going to explain the operation of addition and subtraction of integers through a flow chart diagram. So if we want to perform addition or subtraction and if we follow this flow chart we will be able to get accurate and correct results. So first I will start with the addition of integers. In the addition of integers, if the two integers are of the same size, example, plus 1, plus 2. You have to add these two integers and get the desired result which we already know in more numbers till 3. But if it is two negative integers, again we follow this flow chart where it is same size, we have to put the sign of the integers. So if it is two negative integers, we will put the sign of the negative integers which is minus 3. If the two integers are of different size, one is positive and the other is negative, we perform subtraction. We perform subtraction that is we have to do minus 3 plus 2 that is we have to do 3 minus 2 which is equal to 1 sign of the bigger number. In this terms we are just referring to the absolute value of the integers which is minus 3. So which is 3 and the sign will take off the 3 which is equal to minus 1. So this flow diagram gives us the proper way by which we can perform addition of two integers. Now let us see how to do subtraction of two integers. To subtract two integers, the first step that we perform is additive inverse of the second number. So let's take up with the example. If I want to perform subtraction of two integers, I will take additive inverse of the second number. The additive inverse of minus 3 will be plus 3. We will convert this minus sign into plus into the flow chart or addition. So in this way you can solve addition and subtraction of integers by following this flow chart. Thank you.