第3个回答 2019-11-28
解:6.28减去3.5除以7的商,差是( 289/50 ),【即等于5.78】
∵已知需求出6.28减去3.5除7的商,差是多少
∴6.28减去3.5除7的商,差
= 6.28 - 3.5 ÷ 7
= (6×100+28)/100 - (3×10+5)/10 × 1/7
= 628/100 - 35/10 × 1/7
= 157/25 - 7/2 × 1/7
= 157/25 - 1/2
= 314/50 - 25/50
= 289/50
= 5.78
答:6.28减去3.5除以7的商,差是289/50,【即等于5.78】本回答被网友采纳