Most kids struggle with numbers that require "carrying" or "borrowing." Friendly numbers make those problems disappear.

It’s great for any problem involving a 5 or an even number. 4. "Front-End" Addition

Making math feel like a game rather than a chore is the "secret sauce" for helping kids master numbers. When kids realize they can solve problems faster than a calculator can be turned on, their confidence skyrockets.

This is arguably the coolest-looking trick in mental math. It works for any two-digit number multiplied by 11.