Rational Numbers Review

{[( $\frac{4}{6} \times {3})^2$ +( $\sqrt {144}) \div {2}$ ]x2}

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{[( $\frac{12}{6})^2+(12) \div{2}$ ]x2}

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{[(2) $^2+(12) \div 2$ ]x2}

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{[(4)+(12) $\div 2$ ]x2}

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{[(4)+(6)]x2}

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{[10]x2}

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{20}

___ =4

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