Lesson video

Applying make 10 to differences.

Hello, everybody.

I'm Miss.

Sidhu and I'm working with Mrs. Bramble to do some great maths with you today.

In this lesson, you will be using the make 10 strategy to find the differences between numbers.

I hope you're all ready for the first brainteaser to work today.

Now, let's get started.

Welcome to today's lesson and today we are going to be using the make 10 strategy using the vocabulary, our Star Words less, greater, and difference an independent task, and finding out the answers.

In today's lesson, you will need a pencil and a paper and a number line to help you find the difference.

But first let's do a quick brainteaser.

I want you to match the colours of the shapes to their word form.

I want you to pause the video and have a go at matching them up.

Are you ready? Steady, go! How did you get on? I like that you did that super quick brainteaser.

Now, have a look and see if you were correct.

So we've got the red circle, the green square the blue triangle, and.

Does anyone know what the shape is at the bottom? Hmm, it's got one, two, three, four, five sides.

The pentagon is purple, so well done everybody.

Now, what is the difference between eight and 13? Does it matter which number we start on, on the number line? But what if we started on the number eight? Which way on the number line should we jump? That's right.

I think we should jump forwards.

So if we start on the number eight let's try and see how many jumps it takes to get to 13.

One, two, three, four, five.

Five jumps from eight to 13 which means there's a difference of five.

Now, is there another way of jumping? Hmm, let's find out.

Here we have two number lines.

Have a look at these number lines.

What's the same and what's different? Take a moment to find out.

So pause the video.

What's the same and what's different with these number lines? How did you get on? This number line at the top is showing the make 10 strategy.

You can see it starts from eight and jumps two to get to 10 and then adds on three more to get to 13 because we know that 10 plus three is 13.

So it starts at eight and it jumps two to get to 10.

So I know that eight and two are my number bonds of 10.

And then we add three more to get to 13 because I know that 10 plus three is 13.

10 and three make 13.

The number line at the bottom, this one what we did previously, where we started on the number eight and counted all the way to 13.

And we did five jumps.

Which one do you prefer? Which one do you think was quicker? Well some of you like the make 10 strategy and some of you liked the jumps that we did individually.

But the make 10 strategy is quicker and it uses up all of our number bonds that we know to 10.

How about these ones? What's the same and what's different? I want you to pause the video for a moment and take a closer look.

So pause, have a good look and say what's the same and what's different.

How did you get on? What did you notice? Can you see the number lines, that it's showing make 10? So here's the number line that we had before where we had eight and you jumped to 10 and you made two jumps and then we jumped from 10 to 13.

But if we have a look at the other number line it's still a make 10 strategy because it's going from 13 back to 10 and then it makes two jumps to eight.

So that it's going forwards or backwards but both of them are showing the make 10 strategy because they land on the number 10.

Now, what's the difference between 14 and nine? Let's use the make 10 strategy to find it.

So we need to jump from 14 to 10 and we already know that's four jumps.

So we can do one big one to make it easier and quicker because 10 and four make 14.

So that we know I jumped four and now we need to jump to nine, which is one more jump.

So I jumped four and one.

So we know that four plus one is equal to five.

So there is a difference of five between 14 and nine.

Now it's your turn to try one.

What is the difference between 15 and seven? I want you to use the make 10 strategy to find out.

All right, pause the video to work it out.

Remember, when we use the make 10 strategy, we jump to 10.

How did you do? So from 15, I jumped five because I know that 10 and five make 15.

Then I jumped three because seven and three of the number bonds of 10.

So I jumped five, then I jumped three.

The difference between 15 and seven is eight because I know that five plus three is equal to eight.

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

I want you to find the difference between nine and 15 using the make 10 strategy.

So the difference between nine and 15 is? And thinking about I jumped to get to 10 and then to get to 15.

The next one, find the difference between eight and 14.

Thinking about how you jumped to get to 10 and then to 14.

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

Then we can have a look at the answers.

Find the difference between nine and 15.

So you can go forward or backwards.

So the difference between nine and 15 is six.

This time I went backwards.

I jumped five to get to 10 and then one.

You might have gone forwards from nine.

So you might've jumped one, and then five.

The difference is six.

Find the difference between eight and 14.

The difference between eight and 14 is six.

I jumped four and then two.

You might have gone forwards from eight and you might've jumped two and then four but each way, the difference between eight and 14 is six.

How did you do? I would like you 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 an amazing job today in finding the differences using our make 10 strategy.

Now, it's already the end of the lesson so let's all say bye.

Bye!.