Video Transcript
There are 10 fish. Fill in the numbers to find another
way to make 10.
In this question, we can see two
additions shown using pictures. And both additions make a total of
10. How do we know this? Well, because the first sentence
tells us there are 10 fish, but also because we can see that the final picture in
our number sentences or equations shows the number 10. Our first number sentence is
complete. And if we look carefully, we can
see that each picture’s labeled, but we can count the fish just to check. One, two, three, four, five, six,
seven plus one, two, three equals one, two, three, four, five, six, seven, eight,
nine, 10. Seven and three are a pair of
numbers that go together to make 10.
And we could model this in
different ways. For example, we could split up a
ten frame to show seven plus three. Or if we had 10 counting beads on a
string, we could move three to the other end, to show that a group of seven and a
group of three go together to make 10.
Now, if we look at our second
addition, we can see that some of the numbers are missing. What plus what equals 10? The question asks us to fill in the
numbers to find this other way to make 10. How many fish are there in our
first picture? Let’s start at the top and work our
way down. One, two, three, four, five
fish. Now, what do we add to five to make
10?
We could find the answer by
counting the fish in the second picture. But let’s use our models to
help. If we have five pink counters, how
many orange counters are we going to need? We’ll need the same number of
orange counters to make a row underneath. In other words, we’re going to need
another five. Can we model five plus five using
our beads? Yes, we can. And if we count the fish in our
second picture from top to bottom, we have one, two, three, four, five fish
altogether.
Just because the fish in the second
picture make a different shape doesn’t mean there’s a different number of them. They’re just arranged
differently. So, as well as seven plus three,
five plus five equals 10. Our missing numbers are five and
five.
