The array method only works when one of the numbers being multiplied is bigger than 10. Look at both numbers and, where necessary, split into tens and ones. Draw out a rectangle. Label the top of the ...

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 ...