You can already count and you can compare. Today we'll bring those skills together and learn something new — adding and taking away. We call it addition and subtraction.
When you have three cars and your friend gives you two more, how many do you have now? That's an addition question. Let's count:
three cars and two cars are five cars in total
Adding is putting together. We use the sign + (plus).
When you have five cookies and you eat two, how many are left? That's a subtraction question. Let's count:
five cookies, eat two, three left
Subtracting is taking some away. We use the sign – (minus).
Your fingers are a fantastic counter. To work out 3 + 2, hold up three fingers, then add two more, and count them all. The answer is five.
For 5 – 2, hold up five fingers and bend two down. How many are left up? Three.
In this topic you'll find short articles for you, and one for your parents:
Try the Addition and subtraction exercise on the "up to 10" level, or Adding pictures, where you add what you see.