2023-2024学年海南省文昌中学七年级（上）期末数学试卷（A卷）.pdfVIP

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2022-20ee()(A

)

(14,3,42)(5,,

)

1.(3)2,()

AtB.-+C.2Dy-2

2.(35})z3z+2m+1=z-3m-2z=0,m()

A,-3B,-totD.2

3.(3)c,()

A,a-b=0B.a+b=0C.ab=1D,ab=-1

4,(3)a3bc2()

A,-4,5B,-4,5c.-4,6D.-4,6

5.(3)ARRALIESFBARTKB20+3d,+,o,,1(

),()

A.a+2bB.b+2aC.4a+6bD.6a-+4b

6.(3)4B(C4C,()A

CcB

ABC.D

7.(35})Rika,!,()Bod0ay

A.atb0B.ab0CG.ab0D.ab-10

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8.(3)()

A,3(a-b)=3a-bB,at+(b-c)=a+b-cC.a-(b+c)=a-b-cD,-(a-2b)=-a+2b

9.(33})()

A,0.720B.3.6C.300

Dz5.078

10.(3):+(-3)+3;-(+3)-3;-(-3)5-(+3);-(+3)5+(-3);+(+3)5-(-3);+3-(+3).,

()

A,3B.4C.5D.6xt

11.(3):©8a+2=5ab;@4m4n-5mn4=-mn;3z3(-2z2)=-6z5;

@4a5b=(-200)=-2a3;@(aj5=a7;@(-a)+(-a)=a4.()

A,1B,#4C.3.4

12.(3

)z=]2z-a

=0

,oa

()

A,2B,-2GilD,-1

13.(3)Ae,1,.-

a0b

()

A.abB.a-bC.-abD,-a-b

14,(3

)

o-b=-3,c+d=2,(b+c)-(

a-

d)

()

4.-1B.-5C