Addition

Addition is one of the basic operations in mathematics. It means putting quantities together to find how many there are altogether. For example, if you have 3 apples and receive 2 more, adding 3 and 2 gives 5 apples: 3 + 2 = 5. The numbers being added are called addends, and the result is the sum. We can add whole numbers, decimals, fractions, and many other kinds of numbers.

The plus sign (+) tells us that quantities are being combined. It helps solve everyday problems, such as counting objects, keeping score, or finding a total price. The order of the addends does not change the sum: 2 + 5 and 5 + 2 both equal 7. This is called the commutative property. Another useful idea is associativity.

When three or more numbers are added, changing how they are grouped does not change the result: (2 + 3) + 4 is equal to 2 + (3 + 4). These properties can make calculations easier and help us check an answer. Addition is closely connected to subtraction: subtraction can be understood as finding what must be removed from a quantity to reach another quantity.

We can also represent addition with objects, drawings, number lines, or written calculations. Learning to add begins with small quantities and gradually extends to larger numbers and more complex forms. Although it looks simple, addition is an essential building block of arithmetic and many areas of mathematics.