(-4/9)+(+4/5)-(+5/6)-(+9/10)-(-1又5/18
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(-4/9)+(+4/5)-(+5/6)-(+9/10)-(-1又5/18(-4/9)+(+4/5)-(+5/6)-(+9/10)-(-1又5/18(-4/9)+(+4/5)-(+5/6)-(+9/1
(-4/9)+(+4/5)-(+5/6)-(+9/10)-(-1又5/18
(-4/9)+(+4/5)-(+5/6)-(+9/10)-(-1又5/18
(-4/9)+(+4/5)-(+5/6)-(+9/10)-(-1又5/18
(-4/9)+(+4/5)-(+5/6)-(+9/10)-(-1又5/18)
=-4/9+4/5-5/6-9/10+23/18
=(23/18-4/9-5/6)+(4/5-9/10)
=(23-4*2-5*3)/18+(4*2-9)/10
=-1/10
(-4/9)+(+4/5)-(+5/6)-(+9/10)-(-1又5/18
-9+5x(-6)-(-4)²/(-8)
9-(-11)-(-20) (-5)-(-5)(+5) (-72)-18-(-32)-(-6)-0.8-(-4/5)-(-0.92)-(-9)
(-36)x(4/9+5/6-7/12)
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
1,3,5,4,9,5,13,6,(),(),(),()找规律填数
& # 4 9 3 2 4 & # 4 6 9 9 3 & # 5 4 6 4 4 (猜这三组数字的含义)
(4)、(5)、(6)
()2()()()()()8()()()8()5()1()()()1 5 8()4 6 2()2()()1 8 3()()5()()()()4()()()()8()()6 2 5 ()()()15 9 2 4 1 6 7 3 8(
(-4/9)+(+4/5)-(+5/6)-(+9/10)-(1又5/18) (+11)+(-1/2)+(+7)+(-1/6)+(+2)+(-1/3)
找规律 4、6、5、()、()、9、6、1、2、()、()劳烦说明理由~
数学计算(-6/17)乘(-5/4)除9乘(-17/5)
算24.(1)1、5、5、5(2)1、4、5、6(3)3、3、8、8(4)2、6、9、9(5)5、5、7、11(6)1、3、5、7
1()2()3()4()5()6()7()8()9=36填“+”,“-”
6分之5:9分之4(求比值)
8/9一(5/6一1/4)=?
5x+2(9-4x)=6
x乘(1-4/9)=5/6