Add: 233 m 28 cm and 479 m 16 cm Step-1 Add cm column first 28 cm + 16 cm =44 cm Write in the cm column. Step-2 Add m column 233 m + 479 m = 712 m Write in the m column Thus, 233 m 28 cm + 479 m 16 cm = 712 m 44 cm