There are 300 hundreds in 30000.
30 hundreds
15
3000
300
300000 ÷ 100 = 3000
Thirty of them.
3000
30 of them.
3000 has 3 thousands, 30 hundreds and 300 tens. 40000 has 40 thousands, 400 hundreds and 4000 tens. 500000 has 500 thousands, 5000 hundreds and 50000 tens. 6000000 has 6000 thousands, 60000 hundreds and 600000 tens.
It is already rounded to the nearest hundreds.
There is a difference of 3000, so that is 30 hundreds.