In the addition formula, the two numbers added are called addends. The sum of several identical addends forms a multiplication. Addition is one of the four basic operations, which refers to the calculation of combining two or more numbers and quantities into one number and quantity.

There are three calculation methods:

The first one: direct calculation method.

2+4=6

The second type: split method.

2+4=2+2+2=6

The third type: multiplication.

2+4=2+2+2=2×3=6