Video Transcript
Is the number of cats odd or
even?
In this question, we’re shown a
number of cats. We have to decide if this number is
odd or even. So, the first thing we need to do
is count the number of cats. Let’s use some cubes to help us
count. One, two, three, four, five, six,
seven, eight, nine. Now we know there are nine
cats. We need to decide whether nine is
an odd or even number. One way we can investigate whether
a number is odd or even is to divide our number or our objects into two equal groups
because even numbers can be divided into equal groups.
If we divide our nine bricks into
two groups, both groups will have four bricks, but there’s one left over. This means the number nine is an
odd number. We counted nine cats and modeled
this number using nine cubes. And to decide whether nine was odd
or even, we tried to divide the cubes into two equal groups, but we couldn’t. There was one cube left over. We know this means that nine is an
odd number. The number of cats is odd.
