The expression "2 + 3" represents a simple arithmetic operation known as addition. In this case, the number 2 is combined with the number 3 to find their total. Addition is one of the basic operations in mathematics, used to calculate the sum of two or more numbers. When you add 2 and 3, you count up from 2 by 3 more units. Starting at 2, if you count three steps forward, you reach 5. Therefore, the result of "2 + 3" is 5, which is the sum of the two numbers.