2829
rounded to 10s is 2830
rounded to 100s is 2800
rounded to 1000s is 3000
rounded to 10000s is 0
-----------------
2,829 to the nearest 100
2800 is nearer than 2900 so
a. 2,800
9,567 is nearer 9600 than 9500 so
c. 9,600
2,159 is nearer to 2200 than 2100 so
b. 2,200