In order to round to the nearest million, look at the digit at the place of hundred thousand. If the digit at the place of hundred thousand is equal to 5 or above then round up or else round down.
At the place of hundred thousand, we have 9, so we will round up. So the nearest million will be 2,000,000.
Similarly, to round to the nearest ten thousand, look for the number at the place of thousands. If the digit at the place of thousands is equal to 5 or above then round up or else round down.
At the place of thousand, we have 2, so we will round down. So the nearest ten thousand will be 1,980,000.
Difference = 2,000,000 - 1,980,000
