8th Grade EOU 7 Review

• 0.002

• 0.25

• 0.5

• 1

• 0

• 1

• 2

• 10

What is the scientific notation for 900?

• 400,000

• 0

• 1

• 2

• 3

In 2015, there were about 25 million teenagers (aged 13–17) in the United States. They each sent an average of 900 text messages per month. About how many text messages did all of the teenagers in the United States send each month? Express your answer using scientific notation.

• 400,000

• 400,000,000

• 40,000.00

• Yes, it is correct.

• No, it is not correct.

• It is exactly 20 times.

• It is less than 20 times.