The expression "5 > 3" means that the number 5 is greater than the number 3. In simple terms, if you have five apples and someone else has three apples, you have more apples than they do. This comparison shows that 5 is a larger quantity than 3. In mathematics, the symbol ">" is called the "greater than" sign. It is used to compare two numbers or values. When we say "5 > 3," we are stating a fact about their sizes. This concept is fundamental in understanding numbers and their relationships in arithmetic.