19 is only 1 away from 20, so you prefer to start by multiplying 20 times 5, which equals 100. Then we need to take away a squadron of 5, because there are actually only 19 squadrons, not 20. 100 take ...

Are you struggling to multiply 2-digit numbers? This mathematical trick will have you multiplying hard 2-digit numbers in no time. This video will walk you through the steps of how to multiply 2-digit ...

For years, a French mathematician searched for a proof that a gigantic number is prime. His method is still used 150 years ...

Helping students to develop math fluency takes more than just flash cards. It requires teaching them how to think about ...

A new collection of research papers examines how humans conceptualize numbers and the numeral systems we’ve build around them ...

You can find the difference between two numbers in more than one way. You can count up from the smaller number to the larger number. Or, you can count back from the larger number to the smaller number ...

Students aren’t necessarily missing the math, they’re missing how to make sense of the problem itself. Once we see ...

The interstate system isn’t random. Odd roads run north-south, while even run east-west. But there are a few exceptions and ...

Are you looking to win big? The DC Lottery offers several games to choose from if you think it’s your lucky day. While your odds of winning a big jackpot in the Powerball or Mega Millions are ...

When you play Mega Millions you need to choose six numbers from two separate pools for the drawing. Players choose five numbers between 1 and 70 for the white balls and one number for a gold ball from ...

The innovation dividend represents the durable value AI brings by enabling new products, services and revenue channels.