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:

$$\begin{gathered} a=7.5\cdot 10^5=750000\text{ g/s } \\ b=8.6\cdot 10^4=86000\text{ s } \\ x=a\cdot b=750000\cdot 86000=64500000000=6.450000\cdot 10^{10} \end{gathered}$$

Try another example

Showing 2 comments:

Dr Math

= 6.45 x 10¹⁰ in scientific notation

2 years ago  Like

Math student

(4×10⁴)×(2×10⁷)

2 years ago  Like

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