Answer:
6.85 × 10⁷
Step-by-step explanation:
The purpose of scientific notation is for scientists to write very large, or very small, numbers with ease.
Calculating scientific notation for a positive integer is simple, as it always follows this notation:
a x 10b
Follow the steps below to see how 68,500,000 is written in scientific notation.
Step 1
To find a, take the number and move a decimal place to the right one position.
Original Number: 68,500,000
New Number: 6.8500000
Step 2
Now, to find b, count how many places to the right of the decimal.
New Number:6.8500000Decimal Count:1234567
There are 7 places to the right of the decimal place.
Step 3
Building upon what we know above, we can now reconstruct the number into scientific notation.
Remember, the notation is: a x 10b
a = 6.85 (Please notice any zeroes on the end have been removed)
b = 7
Now the whole thing:
6.85 x 107
Step 4
Check your work:
107 = 10,000,000 x 6.85 = 68,500,000
