WEBVTT
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Making Five
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In this video, we will learn how to use models and addition equations to show different ways to make the number five.
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We can make the number five in different ways.
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How many different cube trains could we make using orange and pink cubes?
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We could make a cube train using five orange cubes.
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One, two, three, four, five.
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We could write down how many orange cubes and how many pink cubes we used to make our cube trains.
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This will help us make sure that we don’t make the same cube train twice.
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We made our cube train using five orange cubes and no pink cubes.
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We could also make a five train using four orange cubes and one pink.
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Have you spotted the pattern?
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Can you predict which cube train will be next?
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Five, four, five, four, three.
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The number of orange cubes is decreasing.
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We’re taking away one each time.
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How many pink cubes will there be?
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Zero, one, two.
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The numbers are increasing.
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We’re adding one pink cube each time.
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Five and zero, four and one, three and two.
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Can you use the pattern to predict what the next pair of numbers will be?
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Five, four, three, two.
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How many pink cubes should there be?
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Zero, one, two, three.
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Two orange cubes and three pink cubes makes five.
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The next pair would be one orange cube and four pink.
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One and four makes five.
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And our final pair of numbers that make five are zero and five.
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Five and zero, four and one, three and two, two and three, one and four, and zero and five are all pairs which make five.
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Did you spot the pattern?
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Five, four, three, two, one, zero, zero, one, two, three, four, five.
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We found six different ways to make a five train.
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Let’s practice some questions now using models to find different ways to make five.
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Choose the sum that equals five.
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Is it one plus two, one plus three, two plus three, one plus one, or two plus two?
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Does one and two equal five?
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Let’s make a cube train to find out.
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One add two makes three.
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One, two, three.
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We know that one and two doesn’t make five because we still have two of our five cubes left over and two spaces in our five frame.
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Does one and three make five?
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We added one and then two.
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To find the total of one and three, we just need to add one more cube to our train.
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One and three doesn’t make five either.
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We still have one of our five cubes left over.
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Does two and three make five?
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We know that one and three makes four.
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And we know that two is one more than one.
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Two and three does make five.
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The sum that equals five is two plus three.
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Find the missing number.
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Four plus one is five.
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Three plus two is what?
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We know that four orange stars and one green star is five.
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The second picture shows three orange stars and two green stars.
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But we’re not told the total number of stars.
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Let’s put all of the stars together in a five frame.
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One, two, three orange stars and two green stars.
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How many stars are there in total?
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Well, we don’t need to count them because the five frame is full.
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Three plus two is five.
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The missing number is five.
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Four and one is five, and three and two is five.
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Use the blocks to help you answer the questions below.
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Fill in the blank.
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Two and three make what?
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Which number bond is correct?
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Whole five, part two, and part three.
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Or whole two, part five, and part three.
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Or whole two, part five, and part three.
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The question tells us to use blocks to help us answer the questions.
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And the first question asks us to find the total of two and three.
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The model shows two red blocks and three blue blocks.
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How many blocks are there in total?
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Let’s count them.
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One, two, three, four, five.
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Two and three is five.
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The second part of the question asks us to find the number bond which is correct.
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Which of these three number bonds shows us that two and three make five?
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Well, we already know that the whole part or the total should be five.
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The whole part of the first number bond is five.
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The whole part of the other two number bonds is two, which is not correct.
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The total of two and three is five.
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Let’s check if the rest of the number bond is correct.
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We know that part of our model shows two red cubes.
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And the second part of the model shows three blue cubes.
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Two and three make five.
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The correct number bond shows us that two and three equals five.
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What have we learned in this video?
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We’ve learned that we can use models to help us find different ways to make five.
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We’ve also learned that we can record our system to help us find all the possible answers.
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And we also learned that we can record different ways to make five using a part–whole model.