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Shannon bought three dozen party favors for $1.24 each. To estimate the total cost she thought of 36 as 9x4, and she thought of $1.24 as $1.25. Then she multiplied the three numbers.
a. What was Shannon's estimate of the cost?
b. To find the cost quickly, which two numbers should she multiply first?

Respuesta :

purpleunicornho
a. Her estimate of the cost is $45
b. She should multiply 9 x 4

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