Lesson video

Comparing numbers.

Hello everybody.

I'm Ms. Sidhu and I'm working with Mrs. Bramble to do some wonderful maths.

Now, in today's lesson, you will be comparing numbers using mathematical language, such as finding the difference.

Now let's get started.

Welcome to today's lesson.

And today we are going to be comparing numbers using the vocabulary less, greater and difference.

Then we will complete an independent task and then end of less quiz to see everything that you have learnt.

Now, let's get started.

You will need a pencil and a paper and a number line to help you find the difference.

Before we start the lesson, let's warm up our brains.

Let's begin this lesson by counting in fives.

Everyone give me a high five.

We are going to count in five from zero to 50.

There's some numbers in the balloon to help you.

To get from zero to 50 counting in fives.

Ready? Steady? Go! Zero, five, 10, 15, 20, 25, 30, 35, 40, 45 and 50! Give yourselves a big whoosh.

Well done! Now, let's have a look at this number line.

Let's try and find some pairs of numbers, which have a difference of one and two.

Let's think for a moment.

What does that mean? A difference of one.

I think it means that there's only one number between them.

For example, if we have the number four and we have the number five, there is a difference of one between these two numbers.

Now, what pairs can you think of? What numbers have a difference of one? And what numbers have a difference of two? I want you to pause the video, have a think, and then tell the person next to you.

What pairs did you think of? Can you shout them out? With the difference of one.

Oh, I heard somebody say, 15 and 16.

That is a difference of one, well done, in 19 and 20.

What about a difference of two.

Good work! I had somebody say six and eight, zero and two, 18 and 20, differences of two.

Good job.

Now here we have the numbers, two and five.

Do they have a difference of one? Let's check.

So let's do our jumps from two to five.

So that's one jump, no, that's not a difference of one.

Let's keep going.

Two.

No, the difference isn't two either.

We need to keep going.

Three.

Yeah! The difference between two and five is three.

Now, let's try another one.

I think it's safe to say, that four and nine have a bigger difference than one or two.

But we need to use the number line to find out what is the difference.

Now let's have a go.

So we'll start at four.

Let's see how many jumps we need to do to find the difference to get to nine.

One, two, we need to keep going.

Three, four, five.

Four and nine have a difference of five.

I'm thinking of two numbers with a difference of three.

That means three jumps between them.

One of the numbers is seven, what could the other number be? Do you need for the difference of three from seven, by going forward or backwards? What could the other number be? The other number could be seven, take away three is equal to four.

So seven, take away three jumps is equal to four or the other number could be, for doing jumps going forward, seven plus three is equal to 10.

So the other number could be four or 10.

Now let's try another one.

I'm thinking of two numbers with a difference of four.

One of the numbers is eight.

What could the other number be? Thinking about going forwards and backwards.

I want you to pause the video and work out what the other number could be.

Here's the possible answers, we could jump backwards and go eight minus four is equal to four, and eight plus four, so again, jumping forward is equal to 12.

So the missing numbers could be four or 12.

I think you're ready for the independent task today.

I'm thinking of two numbers with a difference of four.

One of the numbers is seven.

What might the other number be? Remembering, you can jump forward or backwards to find out the two numbers that it could be.

This time, I'm thinking of two numbers with a difference of three.

One of the numbers is 14.

What might the other number be? I'm thinking of two numbers with a difference of six.

One of the numbers is six.

What might the other number be? Remember, thinking about jumping forward or backwards.

I want you to pause the video to complete your task and then resume once you've finished to find out the answers.

Here we have the answers.

So the missing number could be three or 11.

When we're starting at seven.

Here, when we're starting at the number 14 with a difference of three, the missing numbers could be 17 or 11.

And here, when we're starting at six and we have a difference of six, the missing numbers could be 12 or zero.

How did you do? 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 #LearnwithOak.

You did amazing at comparing the numbers and finding out the difference.

Now I want you to complete the quiz to see everything that you have learned.

And now it's the end of the lesson.

So that's bye from me.

Bye.