rounding 1123 to nearest hundred?

i need help rounding 1,123 to the nearest hundred.

Anonymous2012-02-07T17:20:47Z

1100

Anonymous2012-02-07T17:19:59Z

1100

detonator2012-02-07T17:19:52Z

1100

Jozef Darragjati2012-02-07T17:19:47Z

1100

Gh05t R1dz3r2012-02-07T17:19:23Z

1100

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