Question

Mark goes to the grocery store and purchases items for $0.58, $1.25, $1.99, and $12.40. If Mark gives the cashier $20.00, how much change will he get back?​

Answer 1

First get the sum of Mark's purchases.
$0.58 + $1.25 + $1.99 + $12.40 = $ 16.22

After getting the sum of his purchases, subtract it to the $20.00 he gave to the cashier.

$20.00 - $16.22 = $3.78

The change Mark will get back is $3.78.