What is 7464000.55 and 21079000.29 rounded to the nearest hundred thousand in math?

To round 7464000.55 to the nearest hundred thousand, we look at the digit in the hundred thousand place, which is 4. Since the digit immediately to the right is 6, we round up to 7500000. For 21079000.29, the digit in the hundred thousand place is 0, and the digit immediately to the right is 7, so we round down to 21000000.