Ever wanted to impress everyone by solving complex multiplication problems in your head, without needing a pencil or paper? It's not magic; it's mental math—a superpower you can learn! This article is ...

Estimating means making numbers simpler but keeping their value close to what it was. The result is not exact, but it gives an idea of what the total will be. There are steps which can be followed to ...

Sometimes we do not always need to give detailed answers to problems - we just want a rough idea. When we are faced with a large number, we could round it off to the nearest thousand, or nearest ...