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$ABS(\\frac{(\\var{num3} - (\\var{num1} + \\var{num2}))}{(\\var{num1} + \\var{num2})}) \\times 100 = \\var{ans}$

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What was the percentage error, correct to one decimal place?

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[[0]]%

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The answer to $\\var{num1} + \\var{num2}$ was given as $\\var{num3}$.

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Basic introduction to percentage error

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rebelmaths

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