Addition is a way of putting things together to find out how many you have in total. For example, if you have 2 apples and someone gives you 3 more, addition helps you figure out that you now have 5 apples. It’s like counting all the pieces from two or more groups to see how many there are altogether. The plus sign (+) is used to show that you are adding things together.
People use addition every day without even thinking about it. For example, you use addition when you count how much money you have after getting your allowance and finding some extra coins. You also use it when you figure out how many people are coming to a party by adding up family and friends. At the grocery store, you might add the prices of items in your cart to see how much you'll spend. Even when playing games, you often add points to keep score. Addition helps us solve problems and keep track of things in many parts of daily life.