8th grade Ch 1 L7

In 2005, 8.1 × 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?

• About 22 times as great

• About 100 times as great

• About 2 times as great

• About 222 times as great

• 1.31 × 10^7

• 1.467 × 10^6

Scientific notation makes it easier to perform computations with very large or very small numbers because:

• it simplifies calculations by expressing numbers in powers of ten.

• it makes numbers harder to compare.

• it increases the number of digits in a number.

• it eliminates the need for exponents.

• 3.762 × 10^{-6}