Solve this problem using estimation.
melissa bought 18 cupcakes and 2 gallons of fruit punch for her valentine party. if the cupcakes cost $.33 each and the punch costs $2.78 a gallon, estimate the cost of the cupcakes.

To estimate the total cost of the cupcakes, multiply the cost per cupcake with the number of cupcakes Melissa bought. In the given above, Melissa bought 18 cupcakes worth $0.33 each. The multiplication of the entries gives $5.94. Thus, the estimated cost of cupcakes is $5.94. 

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