Video Transcript
Pick the picture where the total
number of dots is eight multiplied by three.
We’ve got four pictures here, and
they each show groups of dots. The first one’s a little bit
different because the two groups of dots we can see are different numbers. But it’s interesting that in all
the other pictures, we can see lots of groups of three dots. And we’re told that we need to pick
the picture where the total number of dots is the same value as the one that we’ve
underlined here.
Now, we know what eight and three
mean, but do you know what the symbol in between them means? It looks like a small letter x,
doesn’t it? Well, if you were listening
carefully as the question was read out, you might have heard. This symbol is the multiplication
symbol. And that’s why when the question
was read out, we said eight multiplied by three. Another way of saying the same
thing would be eight times three. We can think of the multiplication
symbol as showing a few lots of the same number or a few groups of the same
number.
If we look at our first picture, we
can’t see any groups of the same number. But interestingly, we can see the
numbers eight and three. But this doesn’t show eight lots of
three or eight groups of three. I think we need the addition symbol
for this picture. It shows eight plus three. This isn’t what we’re looking
for. In this question, where we write
eight times three or eight multiplied by three, eight represents the number of
groups that we want and three represents the number of dots in each group.
We’ve already noticed some of the
pictures that have lots of groups of three, but which one has eight groups of
three? In the second picture, there are
one, two, three, four, five, six, seven, eight, nine groups of three. This doesn’t show eight times
three; it shows nine times three. Our third picture shows one, two,
three, four, five, six, seven, eight times three. It seems this is the picture we
were looking for.
And if we just check the last
picture, it’s always good to do this, we can see that it shows seven groups of
three. We know when we write eight
multiplied by three, this represents eight groups of three or eight lots of
three. So the picture that shows the total
number of dots that’s the same as eight times three is the one that shows eight
groups with three dots in each group.