7.8÷(3/4)+6.4×1又1/3+13%×5.5
7.8÷(3/4)+6.4×1又1/3+13%×5.5
简便计算
7.8÷3/4+6.4×1又1/3+4/3×5.6
=7.8×4/3+6.4×4/3+4/3×5.6
=(7.8+6.4+5.6)×4/3
=19.8×4/3
=26.4
18.25-4又2/5+(+18又1/4)+(-4.4) -(-1/2)+(-1/3)-(1/9) 3/7×5/13-3/7×(-11/13)-3/7×3/13
18.25-4又2/5+(+18又1/4)+(-4.4)=18.25-4.4+18.25-4.4=36.5-8.8=27.7 -(-1/2)+(-1/3)-(1/9)=1/2-1/3-1/9=1/6-1/9=1/18 3/7×5/13-3/7×(-11/13)-3/7×3/13=3/7x(5+11-3)/13=3/7
(-1又3/4)÷(-1又1/3)-(3/4+7/8)÷(-13/16)
43/16
【1-(3/8-1/5)-3/4】×13又1/5
【1-(3/8-1/5)-3/4】×13又1/5
=【1-(15/40-8/40)-3/4】*(46/5)
=(1-7/40-30/40)*(46/5)
=(3/40)*(46/5)
=69/100
1/4*(4.85÷5/18-3.6+6.15*3又3/5)+(5.5-4又1/2)
1/4*(4.85÷5/18-3.6+6.15*3又3/5)+(5.5-4又1/2)
=(4.85×18/5-18/5+6.15×18/5)/4+(5.5-4.5)
=[(4.85+6.15-1)×18/5]/4+1
=10×18/5÷4+1
=36÷4+1
=9+1
=10
(6又1/2-3又3/4)÷(13+11又1/5)
=(13/2-15/4)÷(13+56/5)=11/4÷121/4=1/11
1/6+(6+7又5/6*4又1/3)*3/13+13又4/13*2
1/6+(6+7又5/6×4又1/3)×3/13+13又4/13×2
=1/6+(6+47/6×13/3)×3/13+173/13×2
=1/6+6×3/13+47/6×13/3×3/13+346/13
=1/6+18/13+47/6+346/13
=(1/6+47/6)+(18/13+346/13)
=48/6+364/13
=8+28
=36
-3-(+7)=? 3/8-(-1/4)=? (-1又2/3)-5/6=? 0-(-7.8)=?
-3+(7)=4
3/8-(-1/4)=5/8
(-1又2/3)-5/6= -5/2
0-(-7.8)=7.8
孩子你初中吧 好好学 不然到了高中会很惨的
(-3又1/3)-(+1/2)+(4又3/4)-(-1又2/3)=
(-3又1/3)-(+1/2)+(4又3/4)-(-1又2/3)
=[(-3又1/3)+(1又2/3)]+[(4又3/4)-(2分之1)]
=(-3分之5)+4分之17
=12分之31
-2(+7/12)+(-7/15)-(-1/3)+(-1又1/6)
=-2(+35/60)+(-28/60)+20/60+(-70/60)
=-2+(-43/60)
=(-163/60)
(-47/8)-(5又1/5)+(4又1/4)-(+3又1/8)
= [(-47/8)-25/8] -(5又1/5)+(4又1/4)
=(-9)-5分之26+4分之17
=(-9)-20分之104+20分之85
=(-199/20)
(-1)+(+2)-(-3)-(-4)
=(-1)+2+3+4
=8
(-3/5)×(-3又1/2)÷(-1又1/4)÷3=
(-3/5)×(-3又1/2)÷(-1又1/4)÷3=-3/5x7/2÷5/4÷3=-(3/5÷3)x(7/2x4/5)=-1/5x14/5=-14/25