Question

Gas is $2.09 per gallon; how much will it cost to get 10 gallons of gas?

$20.90


$12.09


$7.91


$4.10

Answer 1

Per gallon means that $2.09 is the price for 1 gallon.

$2.09 * 10 gallons= $20.90
Remember that to multiply by 10, you can just move the decimal one place value to the left.

Final answer: $20.90

Answer 2

It's 20.90 because you just move the decimal point back one when multiplying by 10