Can someone PLEASE solve this for me? I need a math wiz to fill in the blanks.

Mentally add or subtract these numbers to the end. Fill in the blanks.

3,829; 4,829; _____; _____; 6,729; _____; 16,629; 15,629; 115,629; _____;
315,629; 315,639; _____; 415,649; _____; _____; 715,649