Let's solve some inverse addition and subtraction problems! Follow the example, then finish the rest.

Addition and subtraction are opposites or inverses. That means they can undo each other! For example, if you start with 15 apples and add 9, you now have 24 apples (15 + 9 = 24). Then, if you take away 9, you're back to 15 apples (24 - 9 = 15). See how the two problems undo each other? So, remember: The inverse of addition is subtraction, and the inverse of subtraction is addition. Ready to give it a try? Let's go!