WEBVTT
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I have a strange set of dominoes.
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The dots on one side are hidden by a sticker.
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The sticker tells you how many dots are hiding under it.
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What is the total number of dots on this domino?
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We have to find the total number of dots.
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We know there are five on this side, and there are four on the other side.
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We need to find how many dots there are altogether.
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We can use a number line to help us.
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We know there are five dots on this side of the domino.
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So we need to start counting at number five.
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And we’re adding four.
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So we need to count four more starting at number five.
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Count on one, two, three, four.
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We landed on number nine.
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Five plus four equals nine.
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The total number of dots is nine.
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We started at five on the number line.
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We counted on four more places and found the answer nine.