Lucas pays $2.09 for each gallon of gas he puts in his car. He fills his
car with 12.28 gallons of gas. Estimate to find the approximate amount
he pays for gas.

In order to find how much Lucas pays total, you would multiply the price per gallon ($2.09) by the gallons of gas (12.28), but this problem asks for an approximation, so you would just round both numbers to a reasonable number that is easier to multiply:

$2.09 --> $2

12.28 --> 12.3

$2 and 12.3 are relatively easy to multiply, and if you find their product, you will get $24.60, so he pays approximately $24.60 for gas.

Lucas pays $2.09 for each gallon of gas he puts in his car. He fills his car with 12.28 gallons of gas. Estimate to find the approximate amount he pays for gas.

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Lucas pays $2.09 for each gallon of gas he puts in his car. He fills his
car with 12.28 gallons of gas. Estimate to find the approximate amount
he pays for gas.