2道简便计算题 拜托大家了(-3.25)+3.75-1/4+2.5+3又3/4+(-4又1/2) (-2又3/5)+(+3又1/4)+(-3又2/5)+(+2又3/4)+(-1又1/2)+(-1又1/3)

来源:学生作业帮助网 编辑:作业帮 时间:2024/08/17 10:45:43
2道简便计算题 拜托大家了(-3.25)+3.75-1/4+2.5+3又3/4+(-4又1/2) (-2又3/5)+(+3又1/4)+(-3又2/5)+(+2又3/4)+(-1又1/2)+(-1又1/3)
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2道简便计算题 拜托大家了(-3.25)+3.75-1/4+2.5+3又3/4+(-4又1/2) (-2又3/5)+(+3又1/4)+(-3又2/5)+(+2又3/4)+(-1又1/2)+(-1又1/3)
2道简便计算题 拜托大家了
(-3.25)+3.75-1/4+2.5+3又3/4+(-4又1/2)

(-2又3/5)+(+3又1/4)+(-3又2/5)+(+2又3/4)+(-1又1/2)+(-1又1/3)

2道简便计算题 拜托大家了(-3.25)+3.75-1/4+2.5+3又3/4+(-4又1/2) (-2又3/5)+(+3又1/4)+(-3又2/5)+(+2又3/4)+(-1又1/2)+(-1又1/3)
(-3.25)+3.75-1/4+2.5+3又3/4+(-4又1/2)=(-3.25)+3.75-0.25+2.5+3.75-4.5=(-3.25)+3.5+2.5+3.75-4.5=(-3.25)+3.75+6-4.5=0.5+1.5=2(-2又3/5)+(+3又1/4)+(-3又2/5)+(+2又3/4)+(-1又1/2)+(-1又1/3)
=(-2又3/5)+(-3又2/5)+(+3又1/4)+(+2又3/4)+(-1又1/2)+(-1又1/3)
=-6+6+(-1又1/2)+(-1又1/3)
=-1又3/6--1又2/6
=-2又5/6

1又2\3

2.5,,,,-2.8333333333……