People often solve simple arithmetic problems, such as basic addition, subtraction, multiplication or division, in their minds. The precise mental processes they rely on to solve these problems, ...

Get your timer out and see whether you can remember the golden rule from grade school math class.

Jackson Ryan was CNET's science editor, and a multiple award-winning one at that. Earlier, he'd been a scientist, but he realized he wasn't very happy sitting at a lab bench all day. Science writing, ...

Get out your timer and number two pencil to see if your arithmetic skills are still sharp.

Let’s be honest – this quiz is very basic. We’re talking simple additions and subtractions, easy fractions, percentages, shapes, angles, and a bit of number logic. All the questions are type-in. If ...

Two students in Danielle Adler’s kindergarten class at Marcus Hook Elementary School in Marcus Hook, Pa., prepare for an addition problem. Credit: Holly Korbey for The Hechinger Report The Hechinger ...