Question

A total of 7,803,100 tourists visited Country A from the year 2018 to the year 2020. Round to the nearest place value, then express this number in the form of a single digit times an integer power of 10.(/

Answer 1

To round the number 7,803,100 to the nearest place value, we look at the digit in the hundred thousands place, which is '8' (the first digit after the millions place). Since 8 is equal to or greater than 5, we round the millions place up from 7 to 8. So, 7,803,100 rounded to the nearest million is 8,000,000.

Now, we will express 8,000,000 in the form of a single digit times an integer power of 10:

\[
8,000,000 = 8 \times 10^6
\]

So the final answer is \( 8 \times 10^6 \).