2022-2023學(xué)年北京市通州區(qū)七年級(jí)（上）期中數(shù)學(xué)試卷

2022-2023WH(±)

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3.(3#)?A<3mlEftA”MMa1

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5.(3#)T?iJM￡T,()

A.(-2)+(-5)=-(5-2)=-3B.(+3)+(-8)=-(3-8)=-5

C.(-9)+(+9)=0D.(-6)+(-4)=+(6+4)=+10

6.<3#xsaa,JE-a,b,

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A.0<-a<bB.-a<0<bC.b<Q<-aD./?<-?<()

7.(3#)aA,B.AA,

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A.2B.4C.6D.8

8.(3#)TWM?MM()

A.84-(4+2)=84-4+84-2=6

B.(-1)4-(-2)xl=(-1)4-(-1)=1

2

C.[-2-(+2)]-4-4=04-4=0

D.(+7)X(-11)-12X(_11)=(-11)X(7-12)=(-11)X(-5)

5555

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8.(35?T?iJi+MjEmWM()

A.84-(4+2)=84-4+84-2=6

B.(-1)4-(-2)Xà=(-1)4-(-1)=1

2

C.[-2-(+2)14-4=04-4=0

D.(+7)X(-11)-12X(_11)=(-11)X(7-12)=(-11)X(-5)

5555

=16

M:A.84-(4+2)=84-6=-!,&A

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32

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32

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+1.5,-1.7;

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=(6+1.5)+(-2.8-1.7)

=7.5+(-4.5)

=3(X),

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A,B,C.D.-5+(-2)+0+1-9=-15.

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24.(64?)P,e^tH$nT?X:P,QofiW^Z^éi^W

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