Starting to use math lenguage

Match it! Select the correct answer from the pull down...Good luck!

I had 10€. I bought 3 pencils and 2 notebooks. How much money do I have now?

Patricia has 7 stickers less than Alberto. How many stickers does Patricia have?

A half of my money

The perimeter of my hamburguer the radius R

Carlos has the double of balls than Sergio. How many balls does Carlos have?

The wheels in a parking with cars, tricycles and motorbikes.

The number of legs in a farm with hens and cows

The triple of my age