Hi!
Solution:
1. You have to move the decimal point until you have a number that is between 1 and 10.
2. Then add a power of 10, which would tell you how many decimal places you moved.
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In your case:
78,000,000 —> you would move the
decimal point 7 times to the left and
your new number will be 7.8 ( which is
between 1 and 10.
Since you moved 7 places to the left,
your power of 10 will be 10^7 or 10 to the
7th power.
Your Answer: 7.8 x 10^7
Hope this helps!
