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几条算术题!(-0.25)+1/4+(5又3/4)+(-3又1/8)-7.34+(-12.74)+7.34+12.4(-1/2)+3又1/4+2又3/4+(-5又1/2)1又3/4+(-6.5)+3又3/8+(1.75)+(2又5/8)(-81)+(74.8)+(17.1)+55.4(1又1/2)+(+5/6)+(-0.5)+(2又1/6)(5又1/3)+(+3)+(+1
题目详情
几条算术题!
(-0.25)+1/4+(5又3/4)+(-3又1/8)
-7.34 +(-12.74)+7.34+12.4
(-1/2)+3又1/4+2又3/4+(-5又1/2)
1又3/4+(-6.5)+3又3/8+(1.75)+(2又5/8)
(-81)+(74.8)+(17.1)+55.4
(1又1/2)+(+5/6)+(-0.5 ) + (2又1/6)
(5又1/3)+(+3)+(+13/3)+(-3)
(-5)+2又2/3+(-1/2)+(2又2/3)
1.6*(-1又4/5)*(-2.5)*(-3/8)
会哪题就做哪题吧 做的多的人给分!
(-0.25)+1/4+(5又3/4)+(-3又1/8)
-7.34 +(-12.74)+7.34+12.4
(-1/2)+3又1/4+2又3/4+(-5又1/2)
1又3/4+(-6.5)+3又3/8+(1.75)+(2又5/8)
(-81)+(74.8)+(17.1)+55.4
(1又1/2)+(+5/6)+(-0.5 ) + (2又1/6)
(5又1/3)+(+3)+(+13/3)+(-3)
(-5)+2又2/3+(-1/2)+(2又2/3)
1.6*(-1又4/5)*(-2.5)*(-3/8)
会哪题就做哪题吧 做的多的人给分!
▼优质解答
答案和解析
(-0.25)+1/4+(5又3/4)+(-3又1/8)=-1/4+1/4+23/4-25/8=(46-25)/8=21/8
-7.34 +(-12.74)+7.34+12.4=-7.34+7.34-12.74+12.4=-0.34
(-1/2)+3又1/4+2又3/4+(-5又1/2)=-5又1/2-1/2+2+3+1/4+3/4=0
1又3/4+(-6.5)+3又3/8+(1.75)+(2又5/8)= 1.75-6.5+(2+3+3/8+5/8 )+1又3/4= 1.25+1又3/4=3
(-81)+(74.8)+(17.1)+55.4=-81+74+17+55+0.8+0.4+0.1=66.3
-7.34 +(-12.74)+7.34+12.4=-7.34+7.34-12.74+12.4=-0.34
(-1/2)+3又1/4+2又3/4+(-5又1/2)=-5又1/2-1/2+2+3+1/4+3/4=0
1又3/4+(-6.5)+3又3/8+(1.75)+(2又5/8)= 1.75-6.5+(2+3+3/8+5/8 )+1又3/4= 1.25+1又3/4=3
(-81)+(74.8)+(17.1)+55.4=-81+74+17+55+0.8+0.4+0.1=66.3
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