Video Transcript
In this multiplication table,
Sophia colored all the multiples of one green. Use the table to finish the
following sentence. When you multiply any number by
one, the product is zero, one, or the same number.
In this question, we have to
investigate what happens when you multiply any number by one. Is the product zero, one, or the
same number? And we’re given this multiplication
table to help. Sophia’s colored all the multiples
of one green. So we can see that the product of
one times one is one. Two times one is two. Three times one or one times three
is three. Four times one is four. And five times one is five.
What did you notice? When we multiplied one by one, the
product is one. When we multiplied two by one, the
product is two. Three multiplied by one is
three. Four multiplied by one is four. And five multiplied by one is
five. So when we multiply any number by
one, the product is the same number.
We call this rule the identity
property of multiplication. When you multiply a number by one,
the product is the same number. Let’s investigate what happens when
you multiply a number by zero.
