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# 12 * 4 1/2 = ?

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12 * 4 1/2 = ?

Sep 1, 2017

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 $$12*4\frac{1}{2}$$ Convert the mixed number into an improper fraction. $$4\frac{1}{2}=\frac{2*4+1}{2}=\frac{9}{2}$$ Plug this back into the expression. $$\frac{12}{1}*\frac{9}{2}$$ 12 and 2 have a GCF of 2, so we can factor that out to facilitate the computation. $$\frac{6}{1}*\frac{9}{1}$$ This is much easier, dont you think? Now, multiply the fractions together. $$54$$

Therefore, $$12*4\frac{1}{2}=54$$

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Sep 1, 2017