what do i round these to??

Question

( ten thousands )
438,416 -
2,764,893-

( Hundred thousands )

2,286,148-
8,234,043-

( hundredths )
16.168-
3.522-

( Ten Thousandths )
.400826
359.22376 -



I can do the rest if someone gets me on the right track :)

Answer 1

440,000
2,760,000
2,300,000
8,200,000
16.17
3.52
.4008
359.2238

Answer 2

44,000 2,760,000
2,300,000 8,200,000
16.17 3.52
.4008 359.2238

Answer 3

440,000
2,760,000

2,300,000
8,200,000

16.17
3.52

.4008
359.2238