In 2001, there were 68,490,000 households in the
United States subscribing to cable television ser-
vices. Round this number to the nearest million.
(Source: Nielsen Media Research-NTI)
Look at the hundred thousands place. If it's a 5 or higher you round up and if it's lower you round down. Since there is 4 in the hundred thousands place you round down. Everything to the right turns into a zero.
