-- Look at the number 942.
-- Figure out what are the even hundreds on either side of it.
They are 900 and 1,000 .
-- Examine each of those, and decide which one is closer to the number 942.
-- 900 is 42 numbers away from 942.
1,000 is 58 numbers away from 942.
-- 900 is the one that's nearest to 942.
932
932
10,100
1000
2,942,628,241 rounded to the nearest billions place is 3 billion (3,000,000,000).
round 90 to the nearest ten
372 rounded to the nearest hundred is 400
300
100
100
100
2,222 rounded to the nearest 100 is 2,200.
1,000
10100
100