Approximately means close to an exact amount, but not perfectly precise. When you say there are approximately 30 students in your class, there might actually be 28 or 32, but you're giving a useful estimate rather than counting each person. Scientists use this word when their measurements are very close but not exact: “The temperature is approximately 72 degrees.”

The word comes in handy when you need to communicate something useful without getting bogged down in tiny details. If someone asks how far your house is from school, saying “approximately two miles” gives them the information they need, even if the real distance is 1.9 or 2.1 miles.

You'll often see the symbol ≈ in math, which means “approximately equal to.” When you round numbers, you're finding approximate values. If 47 people attended an event, you might say approximately 50 people attended.

Being approximate isn't the same as being sloppy or careless. Sometimes precision matters enormously (like measuring medicine), but other times a close estimate serves the purpose perfectly well. Knowing when approximate answers work and when you need exactness is an important skill in both math and everyday life.