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4.5 as a decimal is 4.5.
4.5 is four ones and 1/2 of 1. So, as a mixed fraction, it would look like: 4 1/2.
As an improper fraction, you would multiply the denominator by the number to the left of it, add the numerator to the product, and put the sum over the original denominator. 4x2=8. 8+1= 9. 9/2 is 4.5 as an improper fraction.
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