# Scientific notation

Approximately 7.5x105 gallons of water flow over a waterfall each second. There are 8.6x104 seconds in 1 day. Select the approximate number of gallons of water that flow over the waterfall in 1 day.

Correct result:

x =  64500000000

#### Solution:

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Dr Math
= 6.45 x 1010 in scientific notation

Math student
(4×104)×(2×107)

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