Question

In 2005, 8.1 x 10^10 text messages were sent in the United States. In 2010, the number of annual text messages had risen to 1,810,000,000,000. About how many times as great was the number of text messages in 2010 than 2005?

Answer 1

2.23456790123 x 10 ^ 2

Explanation:

8.1 x 10^10 = 810,000,000,00( 10 Bounces from the decimal point) ( think of it as frog jums each jump is a single multiplication of 10 ^ 1)

1,810,000,000,000 = 1,81 x 10 ^12

1,81 x 10^ 12 - 8.1 x 10^ 10 =22.3456790123 = 2.23456790123 x 10 ^ 2

Hope i helped