Video Transcript
Consider the following
diagram. One times five equals five. Two times five equals 10. Three times five equals 15. We notice that when we multiply
by five, each row is five more than the previous one. Find the result of the
following. Four times five equals
what. Find the result of the
following. Five times five equals
what.
In this question, we’re being
asked to find four times five and five times five. And we’re told to use the
diagram or the model to help. When we multiply by five, each
row is five more than the previous one. One times five is five, and two
times five is 10. We know that 10 is five more
than five. 15 is five more than 10.
So to find four times five, we
need to find the number which is five more than 15: five, 10, 15, 20. Four times five equals 20. And we know that five times
five is five more than 20. Five times five is 25. One times five is five. Two times five is 10. Three times five is 15. Four times five is 20. And five times five is 25. To find the missing products,
we counted in fives.
