Example
1:
Round
1,754
to the nearest
thousand 
1,754
>>> 1 is in the thousands
place.
Look to the right of the 1
and notice that there is a 7.
7 is
"5 or higher",
so the 1 increases by 1
and becomes a 2.
All the other numbers to the right
of the 2 now become Zeros.
Meaning:
1,754 rounds UP to 2,000

Example 2:
Round
32,795
to the nearest
tenthousand 
32,795
>>> 3 is in the tenthousands
place.
Look to the right of the 3
and notice that there is a 2.
2 is NOT
"5 or higher",
so the 3 STAYS as it is.
All the other numbers to the right
of the 3 now become Zeros.
Meaning:
32,795 rounds DOWN
to 30,000

Example 3:
Round 958
to the nearest
hundred 
958
>>> 9 is in the hundreds
place.
Look to the right of the
9
and notice that there is a 5.
5 is
a "5 ",
so the 9 increases by 1
and becomes a 10.
All the other numbers to the right
of the 10 now become Zeros.
Meaning:
928 rounds UP
to 1,000
