Person A--Circle correct operation and then solve. Find the product of these numbers 27 and 4.5, Person B--Circle correct operation and then solve. Find the sum of these numbers 27 and 4.5, Person C--Circle correct operation and then solve. Find the difference of these numbers 27 and 4.5, Person D--Circle correct operation and then solve. Find the quotient of these numbers 27 and 4.5.

Decimal computation

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