少先队员采集树种。第一小队采集了3.755千克，第二小队采集了4.037千克，第三小队采集了3.946千克。三个小队一共采集了多少千克树种？+D3h9J'g,|9p1i4c6y+H0Y:i,Z*?
算式：提示-t3L;B)f*L,Z+D3h9J'g,|9p1i4c6y+H0Y:i,Z*?
答：三个小队一共采集了5G.?(C9A3J6N/n,J千克树种。+D3h9J'g,|9p1i4c6y+H0Y:i,Z*?