13......27 7......53 8......554 8 9......152.7......2 7......8 竖式及验算略3.264÷66=4(幢)4.260+108=368(只)368÷46=8四年级上册数学补充习题第19页答案 http://m.ksjqmj.com/sinianjidaan/2672.html 推荐访问