1 7/10×24.5+0.7×76.5-70% 2 9.54×830+19×95又2/5-9

蝶应恋花2022-10-04 11:39:541条回答

1 7/10×24.5+0.7×76.5-70% 2 9.54×830+19×95又2/5-9
5.4×2
3 5又13/29-8/11-2/11-1/11+16/29
4 5/8÷2/3+5/8÷1/3
5 7/9×5/11+5/9×1/11

已提交，审核后显示！提交回复

xnhua6464 共回答了16个问题 | 采纳率93.8%: 1 7/10×24.5+0.7×76.5-70%
=0.7×（24.5+76.5-1）=0.7×100=70；2 9.54×830+19×95又2/5-95.4×2
=95.4×（83+19-2）
=95.4×100
=9540；
3 5又13/29-8/11-2/11-1/11+16/29
=（5+13/29+16/29）-(8/11+2/11+1/11)
=6-1
=5;
4 5/8÷2/3+5/8÷1/3=5/8×(3/2+3)
=5/8×9/2;
=45/16;
5 7/9×5/11+5/9×1/11
=5/9×(7/11+1/11)
=5/9×8/11
=40/99;
有帮助记得好评,新问题请重新发帖提问,这里不再回答谢谢; 1年前