1340除以7分拆法
问题描述:
1340除以7分拆法
答
1340 / 7
= (1400 - 63 + 3) / 7
= 200 - 9 + 3/7
= 191 又 3/7
答
(1330+7+3)/7=190+1+3/7=191又3/7=191.429