Lesson video

Comparing an ordering numbers within 50.

Hello everybody, I'm Miss Sidhu here today with you to you do some wonderful maths.

And in this lesson today we are going to be comparing and ordering numbers within 50, using the pace of value of the number.

Now I know we're super excited to get started.

Welcome to today's lesson.

Today we are going to be counting numbers within 50, ordering numbers correctly, an independent task, and an end of lesson quiz to see everything that we have learnt.

You will need a pencil and a paper, and a number square to 50 to help you.

But first let's warm up our brains before the start of our lesson.

I want you to match the numeral to the word.

Pause the video and have a go.

Pause and freeze, macaroni cheese.

How did you get on? I am super happy with how quickly you completed that.

So we've got 12, 15, and 19, matching the numeral to the word.

So make sure you check your answers.

Now let's begin the lesson.

So here we have two, two-digit numbers, 24 and 34.

We need to represent these numbers on a place value chart.

Let's have a go at drawing a place value chart together, and working through the answers.

So I want you to draw a place value chart like this.

We've got the number 24 here, and the number 34 there.

Then I have my tens and ones column.

And then I've got my tens and ones column here too.

So you may want to pause the video to draw your place value charts.

Now, here we've got the number 24.

How many tens are in the number 24? Super, two tens.

I'm going to write the number two in the tens column for 24.

Now, how many ones are in 24? Four ones, so there are two tens and four ones.

What about for the number 34? How many tens are in the number 34? Three tens, well done.

We have three tens in the number 34.

And how many ones are in the number 34? Well done there, four ones.

So here we have 24.

We've got two tens and four ones.

And then number 34, we have three tens and four ones.

What is the same? And what is different? Have a look at both of the numbers, and the place value charts, what is the same and what is different? You can tell the person next to you, or you can have a think.

Can you tell me? That's right, the numbers both have the same amount of ones.

They both have four ones, same, same matchy-matchy, but the amount of tens are different.

34 has a greater value as it has three tens, than 24 which only has two tens.

Now which number has the least value and how do you know? You may want to do draw up the numbers in the place value charts like this that we did before to help you.

So thinking about the tens and ones, which number has the least value and how do you know? So we have the numbers, 42, 15 and 33.

Which number has the least value? Can you shout it out? That's right, 15 has the least value because only has one 10.

Now, which number has the greatest value, and how do you know? So we've 42, 15, 33.

Which number has the greatest value and how do you know? So looking at the tens and the ones.

So which number has the greatest value? Can you tell me? And how do you know? That's right, 42 has the greatest value because it has four tens.

Now let's order the numbers from the least to the greatest.

Have a think.

Let's order the numbers from the least to the greatest value.

Having a think.

So, which number would go first, and then which number is in the middle, and which numbers at the end, the greatest value.

Let's see if you've got the same as mine.

So if we order the numbers from the least value to the greatest value, it goes 15, 33, and 42.

This 15 is the least value because he only has one 10.

And then 42 is the greatest value because it has four tens.

Now I think you're ready for today's independent task.

For today's task, I want you to order the numbers from the least to the greatest value.

So look at the first set of numbers, 31, 27 and 26.

Can you order the numbers from the least to the greatest value? And then the next set of numbers, nine, 40 and 18.

And the last set of numbers, 16, 36, and six.

You also have a challenge today, this time I want you to order the numbers from the greatest to the least value.

So it's different to what we did for our independent task.

So we need to order the numbers from the greatest to the least value.

You may want to use a number square to 50 to help you.

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

Here are all the answers in order from the least to the greatest value.

So we have 26, 27, 31.

For the next set, nine, 18 and 40, and the last set, six, 16, 36.

Oh, I've noticed all the ones in six, 16 and 36 are the same.

Now for the challenge, ordering the numbers from the greatest to the smallest.

So 39, 24 and 18.

How did you get on? If you would like to share your work with Oak National, please ask your parent or carer to share your work on Twitter, Instagram, or Facebook tagging @OakNational and hashtag LearnwithOak.

I am super impressed with your maths today of comparing and ordering numbers within 50 using the place value of the number.

Great work everybody.

Now, I want you to complete the quiz to see everything that you have learned, and now it's end of the lesson, so bye.