Oh, dude, 4009 to the nearest 10 is 4010. It's like when you're at a party and you're trying to find your friends in a sea of people, but you just round up to the nearest group you see. So yeah, 4009 gets to hang out with the cool kids at 4010.
4000
The nearest 10 to 340 is 340 itself. When determining the nearest 10, you are looking for the multiple of 10 that is closest to the given number. Since 340 is already a multiple of 10, it is the nearest 10 to itself.
To the nearest tens, 10 To the nearest ones, 10 To the nearest tenths, 10.5 To the nearest hundredths, 10.48
It is 6800 to the nearest 10 and not 6790
10