Select the correct subtraction equation for this image: "There are 4 boys and 2 fewer girls"

Select the correct subtraction equation for this image. "There are 6 boys and 3 fewer girls"

Select the correct subtraction equation for this image.

U9 L8 End of Lesson Quiz

﻿Solving comparison problems part one. Hello everybody. My name is Miss Sidhu and I'm going to be doing some great math with you today. In this lesson, you'll be using addition and subtraction strategies to solve some problems. Now, let me see who's ready. And now let's get started. In today's lesson, we are going to create pictorials for word problems, write equations to solve word problems and independent task, then end of lesson quizzes on everything that we have learned. You will need a pencil and paper and a number line to help you to count. There were times in the video where you may need to pause to have a go at some of the activities yourself. Now, let's get started. We have a brain teaser now. Let's begin this lesson by finding all the odd numbers. So I want you to pause the video and have a go at finding all of the odd numbers. Off you go. How did you do? Did you find all the odd numbers? So let's say that odd numbers together. One, three, seven, nine and five. Well done everybody. Now we have a word problem. I need your help. Let's read this word problem together. Johnny has three more marbles than Bella. If Johnny has nine marbles, how many does Bella have? So we can use cubes to represent Johnny's nine marbles. Can you count them with me? So let's count nine marbles. One, two, three, four, five, six, seven, eight, nine. Okay. Now we need to find out how many marbles Bella has. So we know that Johnny has three more marbles than Bella. So let's mark out three cubes. We've got one, two, three where the arrow is. So we know that Johnny has three more marbles. Now we need to work out how many Bella should have. Let's count because we have to stop before we get to the arrow. One, two, three, four, five, six. We need to stop because otherwise it will go over the arrow. Now we have found out how many marbles Bella has. Bella has six marbles and Johnny has nine marbles. Now let's look at another word problem. This time, Darius has three more marbles than Jasmine. If Jasmine has nine marbles, how many does Darius have? Okay. So let's set out the nine marbles that Jasmine has. Can you count with me? So let's do nine marbles for Jasmine. One, two, three, four, five, six, seven, eight, nine. Okay. Now we know that Darius had three more than Jasmine. What do you think we should do? Can you tell me your ideas to the screen, and then we can choose which one is best after three. One, two, three. While I can hear so many ideas, and I really liked the idea of matching the cues, we have for Darius and then adding three more. Let's try that. So let's match them to Jasmine and then add three more. One, two, three, four, five, six, seven, eight, nine. And now we need to add three more. One, two, three. Let's find out how many keeps Jasmine has. So Jasmine has one, two, three, four, five, six, seven, eight, nine, but now we need to add three more to get to Darius. Everyone put nine in your head, and let's count down three. Let's count our three fingers. Here we go. Nine in our head, and then we've got 10, 11, 12. So Darius must have 12 cubes, 12, so we've got 12 marbles as well. So Darius has 12 marbles and Jasmine has nine marbles. I think you've done some super working out. Now, I think you're ready for today's independent task. Halima has eight marbles and Ben has three fewer marbles than Halima. How many marbles does Ben have? Use the cubes or you can use objects at home to create a pictorial of this problem. You can draw retell, or you can use objects. Remember you can draw up the eight marbles for Halima, but Ben has three fewer. So fewer. That means the number will be smaller than eight. The next word problem. Pippa has eight marbles. She has three fewer marbles than Paul. How many marbles does Paul have? Remember this time Pippa has fewer marbles. She's got three fewer marbles than Paul. That means that Paul has more marbles. You can use the cubes here to help you or you might want to draw your own or use objects. You can also use a number line to help you. I want you to pause the video to complete your task and resume once you're finished. Here are the answers. Halima has eight marbles and Ben has five marbles. Pippa has eight marbles and Paul has 11 marbles. 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 hashtag LearnwithOak. And now, that's the end of the lesson, so bye

In this lesson, we will use the strategies learnt throughout this unit to solve problems.

Lesson overview:Solving comparison problems (Part 1)

Core Content

Addition and subtraction within 20 (comparison):