WEBVTT
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Tens
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In this video, we will learn how to model a 10 as 10 ones and to model multiples of 10 using base 10 blocks.
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Here are some base 10 blocks.
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This tower is called a 10, and this is called a ones block.
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We can use base 10 blocks to help model numbers.
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We can use these 10s to help us model multiples of 10.
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There are three 10 blocks.
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Let’s count in 10s to find out what the number is.
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10, 20, 30.
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30 was made using three 10s.
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Let’s practice modeling numbers using base 10 blocks.
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How many ones make a 10?
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Let’s count.
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There’s one, two, three, four, five, six, seven, eight, nine, 10.
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10 ones make a 10.
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A number has been made from place value blocks.
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How many groups of 10 are there?
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What is the number?
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In the first part of the question, we need to count the number of 10s there are in the model.
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Let’s count.
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One, two, three, four, five, six, seven.
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There are seven groups of 10.
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What is the number?
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To find the number, we need to work out what seven 10s are.
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We could count forward in 10s seven times.
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Let’s count.
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10, 20, 30, 40, 50, 60, 70.
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Seven 10s are 70.
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There are seven groups of 10, which makes 70.
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What number is missing?
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90 marshmallows equals what groups of 10?
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In this question, we’re being asked how many 10s there are in 90.
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If there are 90 marshmallows, how many groups of 10 can we make?
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We could make the number 90 using place value blocks.
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10, 20, 30, 40, 50, 60, 70, 80, 90.
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How many groups of 10 are there?
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One, two, three, four, five, six, seven, eight, nine.
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90 marshmallows equals nine groups of 10.
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The missing number is number nine.
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We counted in 10s until we reached 90.
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Nine 10s made 90.
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The missing number is nine.
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What have we learned in this video?
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We’ve learned that 10 ones make a 10 and how to model multiples of 10 using place value blocks.