You buy 40 of your favorite songs from a Web site that charges $0.98 for each song. What is the cost of 40 songs? Use mental math. The total cost of 40 songs is $. (Simplify your answer.)

Answer 1

The cost of one song is $0.98 so the cost of 40 songs can be approximated by multiplying the cost of one song by the number of songs: $0.98 x 40.

Using mental math, we can break down this multiplication as follows:
$0.98 x 4 = (1 x 4) - (0.02 x 4) = $4 - $0.08 = $3.92.

Therefore, the cost of 40 songs is approximately $3.92.