We've already seen how to multiply a one digit number with another one digit number. So what do we do when it's a two digit number multiplied with another $2$2 digit number?
When we multiply we are always talking about groups. $13\times24$13×24 is actually saying $13$13 groups of $24$24 or $24$24groups of $13$13. We could add up all these groups, but that is a lot of addition to do in our head! There is actually an easier way. Watch this video to see how.
Record and interpret additive and simple multiplicative strategies, using words, diagrams, and symbols, with an understanding of equality