(1)(+9 1/2)+(-3 3/7)+8 1/2+(+3/7)(2)(+4.25)+(-5 4/11)-(+2.75)-(+6 5/11)+7 3/4-1 1/4就这些 尽快回答哈
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(1)(+91/2)+(-33/7)+81/2+(+3/7)(2)(+4.25)+(-54/11)-(+2.75)-(+65/11)+73/4-11/4就这些尽快回答哈(1)(+91/2)+(-33/
(1)(+9 1/2)+(-3 3/7)+8 1/2+(+3/7)(2)(+4.25)+(-5 4/11)-(+2.75)-(+6 5/11)+7 3/4-1 1/4就这些 尽快回答哈
(1)(+9 1/2)+(-3 3/7)+8 1/2+(+3/7)
(2)(+4.25)+(-5 4/11)-(+2.75)-(+6 5/11)+7 3/4-1 1/4
就这些 尽快回答哈
(1)(+9 1/2)+(-3 3/7)+8 1/2+(+3/7)(2)(+4.25)+(-5 4/11)-(+2.75)-(+6 5/11)+7 3/4-1 1/4就这些 尽快回答哈
1.(+9 1/2)+8 1/2+(+3/7)+(-3 3/7)=5-30/7=5/7
2.(+4.25)-(+2.75)+(-5 4/11)-(+6 5/11)+7 3/4-1 1/4
=1.5-(10-1/11)+62/4=1.5-10+1/11+15.5=78/11
7'8'9'10'(1)(2)(3)
(1-3/2*4)*(1-3/3*5)*...*(1-3/7*9)
24点 (1)1 1 9 8 (2)9 9 5 7 (3)9 9 9 7
(5/12-7/9-2/3)/(-1/36)
(-5)-(+3)+(-9)-(-7)+2/1=?
9()2()7()8()()()()4()()9()6()1 3()5()()()()24()()8 5()()1()()8 9 4()1 6 7()()1()()3 6()()88()()()()2()3 6()5
7(1)(2)(3)
7/2+9/4+(-1/3)-0.25+(-1/6)
请帮我做一下这道数独.5()()2()() 7 4()1()()()7 3 6 ()()2()9()4()3()()()5()4 3()()7 8 3()()()()9()()64 1()()2()()9()()
(-5)-(+3)+(-9)-(-7) 【56+(-75)-(-7)】-(8+4+3) 42/(-1)-1/(-0.125) -(+2)-(-1)-(+3)
计算-8+[-1/7-(-1/6-0.25×2/3)÷7/3]-(8+9)
计算 (1)|+2 2/3|+|-9| (2)|-3/4|+|-1 7/8|
(-8/9)×(-0.25)×(-1/4)×9=?(1又3/4-0.875-7/12)×(-1又1/7)=?(-5)×(-7/9)×(-0.8)×(2又1/4)×(-1/7)=?
(2-3)-(5*7-8)+11-(9-6-4)*(3+1)= (1/2-3)*(1-1/2-1/3)*(-1-1/2)*(-4)*(-2-1/3)-(-4)*(-1/8)*(2-1-1/3)*(2-1-1/3)*(2+1/3-1/2)=有负数和绝对值感激不尽
一共有81格()()5 8()()()()()()()()()7()2()9()()()()9()()()()3 ()()4()1()2()()()()()8()3 7()()1 2 7()()(
数学找规律 1 1 3 2 ( ) 3 7 ( ) 9 51 1 3 2 ( ) 3 7 ( ) 9 5
计算:1/(1*3)+1/(3*5)+1/(5*7)+…+1/(49*51).因为1/(1*2)=1-(1/2),1/(2*3)=(1/2)*(1/3),1/(3*4)=(1/3)-(1/4),……,1/(9*10)=(1/9)-(1/10).所以1/(1*2)+1/(2*3)+1/(3*4)+…+1/(9
[(11+1/4+1/7)-(12+2/3+2/9)]/[(11-3/4-3/7)-(12-2/3-2/9)]这个算式得多少