The Guinness World Record for largest mental arithmetic multiplication is 12 digits, achieved in 2021. Four Wappingers Central School District students have taken long multiplication to another level.

The Schönhage–Strassen algorithm, developed by two German mathematicians, was actually the fastest method of multiplication from 1971 through 2007.Although a faster method was developed in 2007 ...

The rows for 8, 4, and 2 are even, so they represent multiply by zero in the long multiplication. You can cross them out. That leaves the row for 17 and 1. Adding those up, ...

You will need to calculate using a column method, which is another name for long multiplication. This will allow you to multiply up to 4-digit numbers by 2-digit numbers.

According to the mathematicians, from Australia and France, long multiplication used to be the only way to multiply - but proved tedious and time-consuming when the numbers became too large.

Comparing stick multiplication and long multiplication side by side. And in examples where the numbers have small individual digits—preferably all 1s and 2s, to be honest—the stick method is ...

All those long multiplication tables. Timed tests and “mad minutes” of worksheet problem-solving. Fluency drills. Somehow, getting kids to know their basic math facts continues to be at the ...

Embarrassing confession time: I never learned my multiplication tables in grade school. Sure, I had the easy tables like the twos and the fives down, but if asked what 4 x 7 or 8 x 6 was, I’d… ...

The ability to perform multiple operations in the proper sequence (for instance, adding as well as multiplying in a long multiplication problem) or to hold on to one piece of information while ...