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

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 ...

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

In this method the smaller number is partitioned (broken down into tens and units). \({27}\) is broken down into \({10}\), \({10}\) and \({7}\). The method of partitioning into tens, simplifies the ...

The doubling square trick is a simple mathematical shortcut designed for class 6 to 10 students to make multiplication easier ...