Answer:
20,000
Step-by-step explanation:
So, the 2 is the ten thousand and the 3 is in the thousands. 4 or less means to round down so 23,556 rounds down to a 0 and change the rest to a 0. 20,000. If the number 23,556 had a 5 or more in the thousands, it would have rounded to 30,000 to the nearest ten thousands but it didn't so the answer is 20,000.
