Rounded to the nth place means look at the place before that
489,334,209, rounded to the ones place is the same thing: 489,334,209 rounded to ten is 489,334,210 rounded to hundred is 489,334,200 rounded to thousand is 489,334,000 rounded to ten thousand is 489,330,000 rouned to hunderd thousand is 489,300,000 rounded to million is 489,000,000 rounded to ten million is 490,000,000 rounded to hunder million is 500,000,000
