# Lesson video

In progress...

Hello everybody, Ms. Charlton and Hedwig here.

Now we're very excited today because today's lesson is very challenging, and Hedwig and I love a challenge.

We might find it quite tricky, but we're just going to keep on going.

So what we've decided to do is to do some of the lesson today, and then carry it on on the next lesson, so that we've got lots of time for practising.

So let's find out what we're going to do.

We are going to use the Make 10 strategy to add 1-digit numbers.

So this is part one, and then the next lesson will be part two.

We're going to learn all about the Make 10 strategy, and then apply the Make 10 strategy to solve some addition equations, then you'll do your independent task.

And you'll do your quiz on the next lesson, not on this one.

You'll need a pencil and some paper.

♪ Hands up star words ♪ Make 10! Par-ti-tion! Oh, partition, that's a new word, isn't it? That means to break something down, to split it up.

Those elves have been busy again.

They've been busy wrapping presents.

And this time they wrapped 8 presents, and then they wrapped 3 more presents.

How many presents are wrapped now? So first of all, we have to think about what equation we might need to do.

So if they're wrapping more presents, then they must be adding more to it, so the numbers are increasing, which means that the operation will be addition, well done.

You can do a little one like that or a big one.

So the numbers are increasing.

Now how shall we solve this problem? First, the elves wrapped 8 presents.

Then they wrapped 3 more presents.

How many presents are wrapped now? Well, we could add them all up and count on our fingers, eight, nine, 10, 11.

That would be quite quick to do that.

But what if the numbers were bigger? What if I suddenly told you that there were much more presents that they wrapped? We would run out of fingers if we counted on our fingers all the time.

So we're going to learn a strategy today to help us with smaller numbers, which will then help us when we add bigger numbers at another time.

The strategy is called Make 10.

So we go Make 10, can you do that? Make 10! Let's find out what on earth Make 10 is.

The Make 10 strategy is when you use what you know, use your number bonds, to make 10 first and then add on after that.

For example, I know that 8 plus 2 is equal to 10, that's my number bond I've got, eight red cubes and two blue cubes, 8 plus 2 is equal to 10.

So 8 plus 3 must be equal to 11.

8 plus 2 is equal to 10, so 8 plus 3, 1 more than 2 is 3, 1 more than 10 is 11.

8 plus 3 is equal to 11.

I've put 10 cubes on the tens frame, and there's one on the side.

So we can use that strategy to help us with more difficult equations.

So going back to our elves, they had eight presents that they'd wrapped, one, two, three, four, five, six, seven, eight, eight blue presents.

And then they wrapped three more presents.

Now what do I need to do? I need to make 10! So the first thing I'm going to do is try and make 10 with those numbers.

There it is, I've made a group of 10.

But what I've done is I've stolen some of those red presents to help me make that 10.

So the three presents that I was adding have been split, they have been partitioned.

Can you say that, partitioned.

Well done, that's one of our star words.

I've partitioned, I've split that three, those three 1s, so that I can steal those to make a group of 10.

I took the three presents, and I've put them into a number bond.

I know that to make 10 from eight presents, I needed two.

So I took my number three and I've split it to make a 2 and a 1.

2 plus 1 is equal to 3, which means that now I've partitioned that number, I can use it to help me make 10, like this.

8 plus 2, there were eight presents, plus those two red presents, is equal to 10.

And then I have one present left, one partitioned number.

10 plus 1 is equal to 11.

That's a much simpler way of doing it.

I make a group of 10, and then I can add it all together.

Let's try again with this bond.

So now first the elves wrapped 8 presents.

Can you see the eight blue presents? And then they wrapped 4 more.

How many presents are left? Again, I could add them up on my fingers, but if the numbers were bigger, it would become too tricky.

So what I need to do first is make 10! Let's make a group of 10, hm.

I've got eight presents.

What do I need to do to 8 to make it into 10? Let's have a look.

There's my group.

I've stolen those two presents from over there to make a group of 10.

So those four presents, I've split it, or I've partitioned.

Look, there's my star word again.

I've partitioned it.

So I've stolen the two, and there are two left.

I've partitioned the number 4 into 2 and 2.

So 8 plus 2, that can make my number bond to 10.

And then there are two left, 10 plus 2 is equal to 12.

So eight presents and four more is equal to 12.

It's the same as saying 10 plus 2 is equal to 12.

Are you ready to try again? First the elves wrapped 8 presents.

Then they wrapped 5 more.

How many presents are wrapped now? I would like you to tell your talk partner what you need to do first.

What's the first thing that we do? Hm, let's have a look.

I told Hedwig that I needed to make 10! Did you tell your talk partner that as well? So let's make our group of 10, there it is.

One, two, three, four, five, six, seven, eight, nine, 10.

So I've stolen some of the red presents to helping me make a group of 10.

There are my five presents that I'm adding, and two of them have been taken.

So what did I do to that number 5? I partitioned it.

So I have 8 plus 2, and then three more outside.

10 plus 3 is equal to 13.

There's my group of five presents, and I've partitioned it.

I made two, so that I can create my bond to 10, and then there were three more.

8 plus 5 is equal to 13.

10 plus 3 is equal to 13.

What about if we had 7 plus 4? Let's try this on a tens frame now so you can see clearly.

I've got seven presents, and then I've got four more red presents to add.

If we look at it on a tens frame, you'll be able to see us making a group of 10.

What do we do first? Shout it at me, make 10! Well done.

So I know that 7 plus 3 is equal to 10.

So there's my number 7, and I need to add three to it to make 10.

So I'm going to partition those four red presents into 3 and 1 to make a bond to 10.

Let's do that, are you ready? One, two, three.

I've made a group of 10.

I took those four presents and I've partitioned them.

I've put three of them into the group of 10, and I have one outside of the group of 10.

7 plus 3, and then one more.

7 plus 3 is equal to 10, plus one more is equal to 11.

So 7 plus 4 is equal to 11; 10 plus 1 is equal to 11.

There's my partitioned number.

I needed to split that into a 3 to create my bond to 10, and one more.

Let's try again with 7 and 5.

So I know that to make 10, I need to create seven, I need to add 7 and 3.

Are you ready to make 10? Show me how you make 10.

Make 10! Let's move those presents onto the tens frame to show us how we're making a group of 10.

Seven, eight, nine, 10, I've made a group of 10.

And how many are left outside of my group? There are two there.

So I took that number 5, I took the five presents, and I partitioned it so that I could use them to help me make 10.

There's my 7 plus 3, and then I have two left over outside of the group of 10.

10 plus 2 is equal to 12.

I've partitioned the number 5 into 3 and 2.

I needed the 3 to make a bond to 10, and two more makes 12.

Now are you ready to try? You're not going to have to do the whole thing by yourselves, don't worry.

All I want to know today is which ones of these equations makes 10, and which ones might need partitioning.

For example, 5 plus 5.

5 plus 5 makes 10.

So you would write 5 plus 5 into the Makes 10 column.

Then look for the other ones and see which ones make exactly 10, and which ones we would need to break down, partition, to create a bond.

Pause the video now.

You can use the worksheet that's been provided, or you can write out your own equations if you want to instead.

Come back afterwards and we'll check the answers together.

Now did you spot the bonds to 10? 5 plus 5 is a bond to 10, 2 and 8 makes 10, and 9 and 1 makes 10.

But the numbers that would need partitioning, because they don't make exactly 10, 8 plus 5, 7 plus 4, and 6 plus 7.

Those numbers we would be able to partition.

That was a really challenging lesson today, everybody.

I really enjoyed doing it and thinking through really carefully what I needed to do.

Should we explain to Hedwig what we've been doing? Come on Hedwig, wakey wakey, wakey wakey.

We had such an exciting lesson today.

We learned lots of new vocabulary.

We learnt the Make 10 strategy, and we do this, make 10! Do you think you can do that? I don't think she can do that with her wings.

But don't worry, we'll just tell her.

So we made 10, which meant that it was easier to add the numbers together, because when the numbers get bigger, it will be tricky.

We can't just count on our fingers.

In order to make 10, we had to do something special with the 1s that we were adding.

What was that word? What did we have to do to those 1s? We had to break them down , partition.

Partition means making it into different parts, parts-ition, partition.

So we partitioned numbers to help us make 10.

Whew, it was a really challenging lesson, but I'm excited to carry it on next time.

It was really great learning with you all today.

I'll see you again soon, bye bye.