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