Introduction - If you have any usage issues, please Google them yourself
Addition is one of the basic operations of the four, it refers to the two or more than two of the number, the amount together, into a number, the amount of calculation. The expression of the symbol + plus addition . In addition to connect the plus sign. And put on the sign = . For example: 1, 2, 3 and 6, it is written as: 1+2+3=6.