If you haven’t done calculations with variables earlier, you might think that it looks odd to calculate with letters. You can learn more about this in the section Algebra.
Have you ever thought that it might be easier sometimes to multiply two factors if you change their place?
Which of the following calculations is the easiest?
7 · 8 =
56 or 8 · 7 = 56?
It is different depending on how you think. If you are practicing your multiplication tables, you can cross out have the table because the communicative law applies.
