Video Transcript
How many factor pairs does the
number 12 have?
In this question, we have to work
out how many factor pairs the number 12 has. Here are 12 cubes. We’ve placed them in one row of 12,
and we know that one multiplied by 12 equals 12. So the numbers one and 12 are a
factor pair which make 12. Let’s mark our factor pair on our
number line. Can you think of any more factor
pairs which we multiply together to give us a product of 12? We know that 12 is an even
number. What do we multiply by two to get
12? We can arrange our 12 cubes into
two rows of six. So two and six are a factor pair
which make 12.
So far, we’ve found two factor
pairs. Can we divide 12 by three? Yes, we can. We can make three rows of four. So three and four are a factor pair
which make 12. We can’t multiply five by another
factor to make 12 or seven or eight, nine, 10, or 11. We found three factor pairs which
multiply together to give us a product of 12. So the number 12 has three factor
pairs: one and 12, two and six, and three and four.