Lesson video

Using place value with numbers within 50.

Hello everybody.

I'm Miss Sidhu and we're going to produce some exciting maths with you today.

Now, let's see what we have in today's lesson.

In this lesson today, you will be using a place value chart with numbers within 50.

Now, let's get started.

Welcome to today's lesson and we will be counting in tens and ones using a place value chart, an independent task and an end of lesson quiz to see everything that we have learnt.

You will need a pencil and a paper to write down any of the work for today.

And a place value chart with the 10s and ones column.

But first, hello everyone.

I have a super fun activity to begin this lesson.

I want you to close your eyes and listen very, very carefully how much money I've dropped into the jar.

So here I have a jar, and I'm going to drop some money in.

And want you to close your eyes.

I could still see some children looking.

Close your eyes and listen super carefully, how many coins have I dropped in the jar? Now you can open your eyes.

How much money is in the jar? So how many coins, do you think I dropped? Or can you shout it out? I dropped, are you ready? I dropped ten coins into the jar.

I hope you had super fun with this, listening to the coins.

You might want to do this at home.

Well done if you got 10 coins as well.

But first, I am in need of some help.

We need to count enough straws for a party.

But how can we do that? I want you to pause the video and discuss your thoughts with somebody else.

So pause, think.

So how can we count enough straws for our party and tell the person next to you? Now you've had some time to discuss how we can count straws.

How would you count these straws? So how would you count these straws? Can you tell me? I have an idea.

We could count these ones, in tens, so these straws in tens and then add the loose ones.

So we count this one in ten and this one in ten and then add the ones in loose.

Let's count these all together.

So we've got 10, 20, 21, 22, 23.

There are, 23 straws all together.

Let's say it again.

There are 23 straws all together.

Okay, so let's use the information we have to fill in this place value chart.

We know that there are two groups of 10.

So we can write the number two in the tens column of the place value chart, so there's the tens column.

Let's write the number two.

You might want to draw it as well.

The next column, or the place of, on the place value chart, is for the loose straws or the ones.

We know that there are three loose straws so we can write the number three.

So there we've got two tens and three ones.

Now, we know that there are 23 straws.

We can also see that the number 23 is a two-digit number.

That means it has the tens and the ones.

Here, we have 18 straws.

What's the first thing I need to do? Can you tell what's the first thing I need to do? Super, we need to group them into tens first.

So let's count ten so we've got one, two, three, four, five, six, seven, eight, nine, ten.

Now we've counting ten.

So we've got our ten.

What do we need to do? Great work, we need to write one in the tens column because because we have one ten.

Why don't we need to carry on grouping in tens? Super.

Well you really are the best today.

We don't need to carry on grouping the straws in tens because we know there's only one ten in the number 18.

Now, how many ones are there in the number 18.

Let's check.

So we've got one, two, three, four, five, six, seven, eight.

Super, now we need to write the number eight in the ones column.

There we have the number 18 and 18 has one ten and eight ones.

I think you are ready for today's independent task.

For your task today, you need to pick a number between 21 and 50.

And then have a go at partitioning the number on the place value chart.

That means finding the tens and ones for the number.

If you can, you can count the amount using items at home such as pasta, straws or even Lego.

There aren't any answers today as we're exploring the place value of numbers.

So here I've chosen the number, 36.

And I have 36 there, and then I've got three tens and six ones for 36.

You might want to choose another number and find out the tens and then the ones.

You may want to use the tens and ones column here.

The place value chart that we've shown here for an example.

I want you to pause the video to complete your task, and then resume once you're finished.

If you would like to share your work with Oak National, please ask your parent or carer to share your work on Twitter, Facebook or Instagram tagging "@OakNational" and "#LearnwithOak".

You did some great work today with using a place value chart.

Now, I want you to complete the quiz.

And now it's the end of the lesson.

So bye.