-2×3×(-4)= -6×(-5) ×(-7)=-2×3×(-4)= -6×(-5) ×(-7)= (-25/8)×1.25×(-8)= 0.1÷(-0.001)÷(-1)= (-4/3)×(-1哟2/1)÷(-2哟4/1)= -6×(-0.25)×14/11= (-7)×(-56)×0÷(-13)=
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-2×3×(-4)= -6×(-5) ×(-7)=-2×3×(-4)= -6×(-5) ×(-7)= (-25/8)×1.25×(-8)= 0.1÷(-0.001)÷(-1)= (-4/3)×(-1哟2/1)÷(-2哟4/1)= -6×(-0.25)×14/11= (-7)×(-56)×0÷(-13)=
-2×3×(-4)= -6×(-5) ×(-7)=
-2×3×(-4)= -6×(-5) ×(-7)= (-25/8)×1.25×(-8)= 0.1÷(-0.001)÷(-1)= (-4/3)×(-1哟2/1)÷(-2哟4/1)= -6×(-0.25)×14/11= (-7)×(-56)×0÷(-13)=
-2×3×(-4)= -6×(-5) ×(-7)=-2×3×(-4)= -6×(-5) ×(-7)= (-25/8)×1.25×(-8)= 0.1÷(-0.001)÷(-1)= (-4/3)×(-1哟2/1)÷(-2哟4/1)= -6×(-0.25)×14/11= (-7)×(-56)×0÷(-13)=
24 -210 16/5 100 -1/2 33/28 0
2+4=2*3 2+4+6=3*4 2+4+6+8=4*5 2+4+6+8+10+...+50=( )*( )
1+(-2)+3+(-4)+5+(-6)+.+(+99)+(-100)=?
38092=3*( )+8*( )+9*( )+2*( )40765=4*( )+7*( )+6*( )+5*( )
简便计算5/6-(3/4-1/2)=
5/6×(3/4+2/5)
2.75-[(-1/2)-(-5/6)+(-3/8)] +4又2/3=?
2=1×2 2+4=6=2×3 2+4+6=12=3×4 2+4+6+8=20=4×5 ……2+4+6+8+.+n=( )=( )×( )
1+(-2)+3+(-4)+5+(-6)+7+(-8)+.+99+(-100)=
1+(-2)+3+(-4)+5+(-6)+...+2013+(-2014)=多少
1-(2-3)-(4-5)-(6-7)-……-(98-99)=
1()2()3()4()5()6()7()8()9=36填“+”,“-”
要过程(-2)×5/4×(-9/10)×(-2/3)=?(-6)×5×(-7/6)×2/7=?(-4)×7×(-1)×(-0.25)=?
填运算符号和“()”:1 2 3 4 5=4 6 6 6 6 6=71 2 3 4 5 6 7 8=10
1234567654321×(1+2+3+4+5+6+7+6+5+4+3+2+1)=( )的平方急
能简算要简算:(1/2+3/5)×5/11=?8÷(6+2.5×4/5)
(2/3)x-(5/6)=5x-3/4
根号(2x-4)=根号(5x+6)-根号(3x+2)
定义:5*2=5×4×3,6*3=6×5×4,7*4=7×6×5……则8*4=( ).