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Calculate 76.2 plus 311.
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In this question, we’re asked to find the sum of a decimal and an integer, which we can do using a column addition.
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When performing addition, it is absolutely vital that we line up the columns.
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And in the case of decimals, this means we need to line up the decimal points.
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As 311 is an integer, its decimal point comes at the end.
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So we can line up the decimal points, and the decimal point for the answer will then be directly below them.
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Filling in the rest of values, we can see that there’s currently a gap in the tenths column for 311.
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We can replace this as a zero, as 311 has zero tenths.
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Now we can perform the addition in columns starting from the right.
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First of all, two plus zero which is equal to two.
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In the units column, we have six plus one, which is equal to seven.
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In the tens column, seven plus one, which is equal to eight.
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In the hundreds column, we have nothing added to three, which is equal to three.
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76.2 plus 311 is equal to 387.2.
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Remember, lining up the decimal points when adding together two decimals is absolutely essential.