AI Tutor
Imagine you have 8 toy cars, but 5 of them roll under the couch. How many cars are still on the rug?
You could count backward on your fingers, but there is a much faster secret trick you can use.
What is this speedy math trick?

The Think-Addition Trick

Addition and subtraction are best friends that work in opposite directions.
When you see 8−5=?8 - 5 = \text{?}, you can turn it around using think-addition: ask yourself, "55 plus what number makes 88?"
Since you already know 5+3=85 + 3 = 8, you instantly know that 8−5=38 - 5 = 3!
How can you use this trick step-by-step on a new problem?

Step-by-Step Example

Let's solve 7−3=?7 - 3 = \text{?} without counting backward.
Step 1: Turn subtraction into addition by asking, "3 plus what makes 7?"