WEBVTT
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Seven plus seven plus seven plus seven equals the missing number multiplied by four.
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Seven plus seven plus seven plus seven is repeated addition.
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We keep on adding seven.
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Letâ€™s count the number of sevens we need to add: one, two, three, four.
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Adding together four sevens is the same as multiplying by four.
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That means that seven multiplied by four is the same as adding four sevens.
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So the missing number is seven.
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Seven plus seven plus seven plus seven equals seven multiplied by four.