问题 解答题 笔算.509×48473×27560×30875×36126×4369×517. 答案 509×48=24432, 509×48.40722036 .24432473×27=12771,473×27.3311946 .12771560×30=16800,560×30 .16800 875×36=31500,875×36.52502625 .31500126×43=5418,126×43.378504.541869×517=35673,517×69.46533102 .35673