In which of the following numbers does the digit eight represent a value of 800000?
Let’s look at place value. We have all the way on the right units. Then moving to the left, tens place. To the left again, the hundreds place. The next set of three digits on the left all represent thousands, the thousands unit, the ten thousands unit, and then the hundred thousands unit.
We need an eight in the hundred thousands unit, 800000. Only one of these values has an eight in the hundred thousands place. And that’s answer choice e. 42863994 has an eight in the hundred thousands place.