On paper, it’s one of the simplest math problems in the world: 2+2. If you’re counting something, like screws at the hardware store, it’s pretty straightforward. But the lines blur in other contexts.

Converting between fractions, decimals and percentages is a useful problem-solving skill. The data can be more easily ordered by size when written in the same format. Calculations often give a decimal ...

To do the method, begin by writing the two numbers you want to multiply at the top of two columns. In the left column, you progressively halve the number and take the integer floor of any “and a half” ...

\(2 \frac{1}{2}\) is an example of a mixed number. This is when whole numbers and fractions are written together. Turn \(3 \frac{1}{2}\) into an improper fraction. The fraction in the mixed number has ...

A team of researchers affiliated with UNIST has made a significant breakthrough by mathematically proving that a special type of vortex pair, called the Sadovskii vortex patch, can exist within ideal ...

James Chen, CMT is an expert trader, investment adviser, and global market strategist. Gordon Scott has been an active investor and technical analyst or 20+ years. He is a Chartered Market Technician ...

Ejection fraction (EF) measures how well the heart pumps blood. A normal ejection fraction is between 55% to 70%. A low ejection fraction can be a sign of heart failure. Ejection fraction (EF) ...

I will never forget this one day when Kevin was a preschooler. We had an IEP meeting, and one of his proposed math IEP goals was to be able to visualize and identify what 2 of something looks like or ...

Reading picks from Book Review editors, guaranteed to suit any mood. By The New York Times Books Staff Here is the standout fiction and nonfiction of the year, selected by the staff of The New York ...

Did you know that that 50 percent of women in the U.S. age 50 or older will break a bone due to osteoporosis? Overall, about 54 million Americans have osteoporosis—a gradual thinning out of the ...

Talking to yourself is very common and can be good for you. If your self-talk is positive, it can help you feel better and reach your goals. Be careful with negative self-talk, as it can make you feel ...