Question

how does knowing where the halfway point is help you find which hundred thousand 138,202 is closest to? Explain

Answer 1

Knowing the halfway point (which is 5) helps you so you know wither or not the hundred thousands place goes high or stays the same.
So, for this problem 138,202 would round out to 100,000 because the 3 is below 5 so the hundred thousands place stays the same.

Answer 2

100,000

Explanation:

The given number is 138, 202. We have to find the number hundred thousand which is close to the given number.

Here the hundred thousand place digit is 1.

138,202

Now look for the next right digit which is 3.

3 is not halfway mark (5) so we have to keep the hundred thousand place as it is and place 0's to the rest of the places.

Note: If the digit right to the hundred thousand place is equal or more than halfway mark, we can add 1 with the hundred thousand place.

So, 138,202 = 100,000 since the digit right to the hundred thousand place is not halfway mark.

Therefore, the answer is 100,000