To compare the two values \( 5 \times 10^8 \) and \( 8 \times 10^5 \), we can convert both values into the same power of ten for easier comparison.
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Convert \( 8 \times 10^5 \) to a similar power of ten as \( 5 \times 10^8 \):
\( 8 \times 10^5 = 8 \times 10^5 \) can be rewritten with the same exponent:
\[ 8 \times 10^5 = 0.08 \times 10^8 \]
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Now we compare:
\[ 5 \times 10^8 \quad \text{and} \quad 0.08 \times 10^8 \]
Since \( 5 > 0.08 \), we conclude that:
\[ 5 \times 10^8 > 8 \times 10^5 \]
So the filled statement would be:
5×10^8 is greater than 8×10^5.