1()2()3()4()5=3
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/10 11:40:36
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(1-2)(1-3)(3-4)(4-5)...(19-20)=
2*()=1/4/()=5*()=1/3*()=()
(1) (2) (3) (4) (5)
1)2)3)4)5)
1) 2) 3) 4) 5)
4/3×-()=2/5×()=12/7×()=5×()=1
(1-3/(2*4))×(1-3/(3*5))×(1-3/(4*6))×.×(1-3/(97*99))=?
3+(-2)-(-4)+5=
3/4×()=2/7÷()=()×0.2=3-()=()+1/5=1
化简下列各数:(1)-(-2 1/3)=?(2)-(+5)=?(3)-(-0.25)=?(4)+(-1/3)=?(5)-【(-1)】=?(6)-【-(+2)】=?
(1/7)*() =(1/9)*()=(1/3)/()=(2/5)+()=()-(1/4)
0-(+2/1)-(+5/2)-(-4/3)-(+4/1)-(-5/3)
填时间量词3()+7()=1() 5()+2()=1() 5()+19()=1() 4()+8()=1()
(1/3+2/3)+(1/4+2/4+3/4)+(1/5+2/5+3/5+4/5)+.+(1/100+.99/100)=
-1-(-2)-(+3)+(-4)-(-5)
1+(-2)+3+(-4)+5+(-6)+.+(+99)+(-100)=?
1()2()3()4()5=3
1()2()3()4()5()6()7()8()9=36填“+”,“-”