Round the number 296,386,482 to the nearest million

1,000,000 is 1 million
look at the previous digit
if it is less than 5 then leave the millions place as is and replace the following digits with zeroes

if it is equal to or greater than 5, add 1 to the millions place and replace the following digits with zeroes

296,386,482
3<5
round down (leave as is baseically)
296,000,000 is rounded

6,000,000 because 3 is less than 5 and the number prior to the 3 is a 6