WEBVTT
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Matthew is finding factor pairs of 42.
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What number is missing from the table?
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When we think about factor pairs, we know that they multiply together to equal something.
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One times 42 multiplies together to equal 42.
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Two times 21 multiplies together to equal 42.
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Six times seven multiplies together to equal 42.
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So the question for us becomes what times three equals 42.
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We can solve this question with division.
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By dividing 42 by three, we can figure out three times what equals 42.
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Using long division, we first ask the question how many times will three go into four.
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It goes in one time.
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One times three equals three.
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From there, we take three and subtract it from four.
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Four minus three is one.
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Bring down the two from 42.
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And we’re left with 12.
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We need to ask the question how many times will three go into 12.
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Three goes into 12 four times, because four times three equals 12.
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When we subtract 12 from 12, we’re left with zero.
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And that tells us there is no remainder.
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42 divided by three equals 14.
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And that means three times 14 equals 42.
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14 is the missing number for the table.