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 ...

Multiplication of two numbers is easy, right? At primary school we learn how to do long multiplication like this: Methods similar to this go back thousands of years, at least to the ancient Sumerians ...