4米35厘米加5米50厘米=( 9.85 )米4米35厘米=4.35米5米50厘米=5.5米4.35+5.5=9.85米
4米35厘米+5米50厘米=(9.85 )米
4米35厘米加5米50厘米=(9.85 )米
9米85厘米
