Mental calculator

Have you ever seen someone who can do big math problems in their head really quickly? That's called being a mental calculator!

It's just like using a calculator, but instead of pushing buttons, they use their brain to do the work. Mental calculators are really good at doing math problems in their head, even problems that seem really hard.

They use something called "mental math" which means they do math in their head without using a pencil or paper or calculator. They use their brain to remember math rules and tricks to help them do the problem quickly.

For example, if you want to add 5+5, they would think "5+5 is the same as 10" and give you the answer right away. Or if you want to multiply 7x6, they might remember that 7x5=35 and then add one more group of 7 to get 42.

Mental calculators practice a lot to get really good at this skill. They might even compete in math competitions to see who can solve problems the fastest!

So next time you need help with math, try using your brain like a mental calculator and see how quickly you can solve the problem!