Answer:
20,000
Step-by-step explanation:
First, look at the hundreds place to see if we're rounding up or down. The rule for rounding is if the number is 4 or smaller you round down, and if it's 5 or higher you round up. Because the number is 9, which is above 5, we are rounding up.
Next, round the 9 up in the thousands place. 9 becomes 10, but because we can't do 10, we change the 1 in the ten thousands place to a 2, and the 9 to a 0.
Now, it should look like this: 20,000. We don't leave every other place as is, because if we round the to the nearest thousands place, it will affect every other place.
Therefore, 19,938 rounds up to 20,000.
