Video Transcript
Adding Objects
In this video, we’re going to learn
how to count on within 10 to help us find the total number of objects after more
objects are added to a group. Let’s imagine we’re on the beach
and we can see four crabs. One, two, three, four. Now, what happens if two more crabs
joined them? Four and two more make what? We already know that we have a
group of four. So we can start by counting from
the number four. And we need to count on another two
more numbers.
What is two more than four? Let’s use our number track to help
us. Start on four and count on two
more. Four, five, six. Four and two more make six
altogether. We’ve found the answer by counting
on. Let’s try answering some questions
where we have to count on to find the answer.
How many ducks are there in
total? Three ducks and two more ducks
is what ducks.
In this question, we’re being
asked to add two groups of objects together, some ducks. We need to find how many ducks
there are in total when we add these two groups together. In the picture, we can see that
we start with three ducks. And then our group of three
ducks becomes bigger because we need to add two more ducks. What is two more than
three?
We can find the answer by
counting on. To start with, we could model
our two groups of ducks out of counters, three and then two more. Now, we could just count the
counters: one, two, three, and so on. But there’s a quicker way to
find the answer, and that’s to count on from the number we know. We know that the first group of
ducks contains three ducks. So we can start counting from
the number three. Let’s point to this group, say
the number three, and then carry on counting. Three, four, five. We started with the number
three, and we counted on two more. And we arrived at the number
five. Three ducks and two more ducks
is five ducks.
How many trees are there in
total? Two trees and one more
tree.
This is an addition
question. We need to add together two
groups of trees to find the total. And we’re given a picture
sentence to help us here. We start off with a group of
two trees. But that’s not all. We need to add another one more
tree. Two plus one more is what?
Let’s model our addition using
counters. We have a group of two trees,
and then we need to add one more. Let’s find the answer by
counting on from the number we start with. And our starting number is two
because we know there are two trees in the first group. So we’ll say two and then carry
on counting one more. Two, three. Two and one is three. So we can say two trees and one
more tree gives a total of three trees.
Complete the following
sentence. Two boys and three more makes
what boys?
In this question, we need to
add together two groups of boys. Our first group contains two
boys. And we can see in the second
picture that our second group contains three more boys. Imagine two boys are having a
chat in the playground, and then three more come up and join them. We need to add these two groups
together to find the total. Two and three more makes
what?
Well, we know that we’re
starting with two boys. So we can simply count on three
more. And to do this, we could use a
number track to help us. So as we’ve said already, we
can start counting from the number two because we know there are two boys in the
group to start with. Now, we just need to count on
three more for the three more boys that arrive. And as we count on, we’ll move
our counter. Two, three, four, five. We started at the number two,
and we counted on three more numbers. Three, four, five. So we know that two boys and
three more makes five boys. The missing number in our
sentence is the number five.
How many cats are there in
total? Two cats and six cats.
This question asks us to find
the number of cats in total. The word “total” means that we
need to add our two groups of cats together. In other words, we need to find
the answer to two plus another six. When we add together two groups
like this, we can find the answer by counting on. We already know that there are
two cats in our first group. So we don’t need to count
them. We can just say the number
two. And so to find the answer, we
just need to count on from two another six numbers. Two and six more is what?
Let’s find out. Two, three, four, five, six,
seven, eight. We could show the same answer
using a number track. Start with the number two and
find six more. One, two, three, four, five,
six. We’ve reached the number
eight. Two plus six more makes
eight. So if we have a group of two
cats and another group of six cats, we have eight cats in total.
We’ve answered lots of questions in
this video. What have we learned? Well, firstly, we’ve learned how to
find the total number of objects after more objects are added to a group. And the way that we’ve done this is
by counting on.
