2022-2023學(xué)年河南省南陽(yáng)重點(diǎn)學(xué)校七年級(jí)（上）期末數(shù)學(xué)試卷（含解析）

2022-2023(±)

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i.iW|-j|BWM4()

A.|1B.2C.-1|D.-2

2.WaWbftllfflOtIHO,3|3ftaBftO>()

112

A.--!-B.ftC.-7D.2b

2b2bb

3.2020^6^230,Ott41SW^(BD$)Wm

21500000*.M^21500000ffllf4*iH^^*^()

A.0.215x108B.2.15X107C.2.15x106D.21.5x106

4.—8a2bc+lWWSft,1ETO^()

A.

0.4341441D.4W<iO:M-8a2hc

5.ft|a|=7,|&|=9,K|a+&|=-a-b,WJh-aWfflX)

A.-2^-16B.-2^16C.2^-16D.2^16

6.W^WiE^W—

“ft“)

A.

B.Bl

7.1144“A—”JLMTI,wtm&w/pS:

(D(?)?

A.2+6nB.8+6nC.4+4nD.8n

8.W—SO—?Z1=Z3;@Z.CAD+Z2=180°;@ftzl=45°,WJW

BCUAD-,(4)Wz2=30°,4Wz4=zC,ftftOJiBW)

A.?@(DB.?@@c-@?D-?@@?

9.M,ZAOBWMOA,Z.AOB=40o.￡0B±<—&P,A

OtWOWTO.RIJZQPB^W

IfcX)

A.60°B.80°C.100°D.120°

10.^AFWtAxfiWASl,^IM2014&M^^()

A.3B.27C.9D.1

</J^35>,#15?o

11.M,MWJAMnt

12.ER>R3^—

i-H^f—<ffif|a-b\=

13.M,^Z1=110°,JHU2=(JOlTJffllffi

14.B^B￡IMhAB=8cm,AC=18cm,P.FJlPQAjcm.

15.M,f-WMftTft'APB,C,oKft.,S.AB=BC=CD,

MimSlnlSMB,c,WJ

im￡&UO?

ABCD

HxMfts/J^,ft75^0

16.CRISIS#)

W:

(l)-18-4x|+(-6)2-9;

(2)-13x125-13x216+(-13)x(-301);

■2

(3)-(—3)2x2-[-(1-0.24-1)x(-3)2].

17.(*/J^6^)

3<x<2,ftiW:|x—2|+|x+3|—|3x+9|—|4—2x|.

18.(*/hl§9^)

(2)M￡^c6WOa￡F,

[?]EF^BGtfrtL^c^J;

m?]fiyoaw.a,.

19.(*/J^8E)

^JT8TC,￡M-mWWft,

B^<jfLUiOyn^jMIi,^SHJIOTUWHP^HH^JIE,EA&IOTEWHP^HB;^,

-——'E>■H

Jrft-Bv*ttfr(TO)+1-2+3-1+2+4-3

2035103015550

(ijMiWMIOW^lO,%.

(2)&—(WM^W^sfO

(3)?TWftno.

^-:^JT!3%,￡gtH5/rWW,WTJT8#T;

s§JrWi/i'i27u.

20.(*/J^7^)

M.BftMD1BC.EF1BC,F,z2+z3=180°,i5W,H|:^GDC=zOftl'Fxf

lWSi±S,

ft?:EF1BC(B&1),

=￡EFB=

@WZ1+Z2=

@XH^E2+Z3=180°(.),

@Wzl=z3(),

?^AB//DG{),

21.(#/b?8#)

SS6Wicm0<M>101$^fi<jJLW?

(1)4^SIJHHB*tiwst?awwaa;

(2)EL$Rcm2;

mas

22.(*/b￡g8^)

$0?,=^AB=^CD,tiM'Nfr%]^&AB,S.MN=20cm,^XC^K:.

34

I______1—1____I______I_______I

AMDBNC

23.(^/h^l4^)

^DCE=30°,AACB=90°,tyl^DCE^

ft,^EWfftl'B]^lt#.

E

(i)M@,3t=st,

(2)#nffl(3),^t=Bt,CB$md)CE;

(3)W@,^t=0t,CFW￥^ZBCD;

(4)zDC￡-^^C^glJ^?(5)W^fi,CM^^ACE,CN^ftZ-BCD,

1.A

tori?■.I-|I=|.

A.

I'I'JM77ft??

%a>0,filial=a;%a=0,WJ|a|=0;<0,WJ|a|=-a.

2.A

[ft?#rl[Wl

W^IKWXJMW.BWWB*o,

WWa+2b=0,aw^ilja=—2b,

[ft?^l

ft?;■■■a72/)77<lO7JUZ?*0,

■■■a+2b=0,

???a=—2b,

■'■aKl?42b

$.&■.A.

3.B

[ftWl[Wl

X10n9W5￡,<a<

10,H>JJE?.WJEJMW^aBt,

7%7S7,nIW^iWfrffiR.

[ftm

ft?:W21500000WWHM;g^j2.15x107,

B.

4.[#^1D

rft?tff]ft?:A.^^3ab2-8a2bc+l^'^^4,<3?,

B.￡^3ab2-8a2bc+lM^￡4,<3^,MTOHW7

C.'glWMlA,^CO^;

Do

JSith^^BPoTo

MmA^MSS^5W<Afe&,>,W?

5.[?]A

[Mtjf]W:???|a|=7,|d|=9,

.-.a—±7,b=±9.

■?■|a+b\=—a—b,

?■■a+b<0,

???Sa=7H'J‘,b=—9,b—a=—16;

Sa=-70^,b=—9,b—a=—2.

?■?b-aBW>16^-2.

M:A.

O-^HWh-aBWPBl.

6.[^]D

[Wtlf]W:???lE^awmwm,

.-.MiE^±s“±”a^”.

M:D.

7.[^]A

[ftWlLWl

turn

+6)m,+6n)m.

ftj￡A.

8.[^M]D

[WtJr1W:???zl+z2=90°,z3+z2=90°,

■??zl=z3,

Sfe?jE5ft;

???ACAD+Z2=zl+z2+Z3+Z2=90°+90°=180°,

WDJLE5H;

vzl=45°,

.-.z3=zB=45°,

BCHAD.

AJ(@IE5^;

Vz2=30°,

.'.zl=ZE=60°,

AAC/IDE,

z4=zC,

SJ(?iE5^.

M:D.

W?lWi￡=W@;?

?w^ww^m^wowf?.

9.B

[Wfrf1W:?■?QR//OB,tAOB=40°,

.-.^AQR=tAOB=40°,

■?■^AOBMffiliOA,

???AOQP=AAQR=40°,

???AQPB=tAOB+ZO/2P=40°+40°=80°.

MB.

&QR//OB,tAOB=40°,BPWffzTlQPWOf,XEt!z40BWM

OA,MOtWW,Ptt^OQP=AAQR=40°,MX=

WWSM.

io.r^MiD

tmir]ft?:M1&,|X81=27,

>2^,|x27=9,

M3&,|x9=3,

>41^,|x3=1,

M5<^,1+2=3,

>6}^,|x3=1,

fimisMmW^SMi,?&is?^w?>3,

■?■2014M?,

.??M2014MtHlW^?91.

M:D.

M3,^O￥#BPnJ.

lW>M3MMm^t.

11.[^1

LWtfrlLWl

[Am

ft?:MWiJTW

H^iE5ftft?#M-aaB^a^^i/RM:MP?XlWims.

12.r^Mii

[Of!I?:TOWOJa=0,Z)=lj￡-1.

Sa=0,b=1B4|a—b\=1;

Sa=0,b=—lB4|a—b\=1.

&L\a-b\=1.

IS?.

13.[^1110°

a!lb.

:■Zl=Z2=110°.

110°.

?TOtW4?&itm.

WTO

14.[^Ml13^5

rof]M:?sscasTOim,

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C0APB

AP=±AB=4,AQ=^AC=9,

?■?PQ—AQ+AP—4+9=13cm.

?SScTOF^ft'W,

?---??—?-------?

APB0C

AP=^AB=4cm,BC=AC-AB=10cm,AQ=±AC=9,

?■?PQ=AQ—AP=9—4=5cm.

13cmsK5cm.

^lEigBt,1*ZWM4>B,

15.[^16

[Of]M:WWh

DB,DA,CB,CA,BA

^^6.

tiP^A,B,c,M4^<A

o

16.r^MlW:(1)-18-4xj+(—6)2H-9

=—18—6+36-^9

=-24+4

=-20;

(2)-13x125-13x216+(-13)x(-301)

=-13x(125+216-301)

=-13x40

=-520;

(3)-(-3)2x2-[-(1-0.2+1)x(-S)2]

=-9x2-[-(l-|)x9]

2

=-18-(-|x9)

=-18+6

=-12.

[Off](i)^i+M^,MW?,MJsWMisMW;

(2)1WJWf￡iWBBfliIWJWfIWiOBPRl;

(3)^affK^rtWg?,iSBlsJf,MlHiWWisJWp]-.

W.

17.[^]ft?:???-3<X<2,

■?■x—2<0,x+3>0,3x+9=3(x+3)>0,4—2x=—2(x—2)>0,

KJJMx^=2—x+x+3—3x—9—4+2x=—x—8.

tof]

18.[^1W

LMtlflft?:rSH^l(1)M1,ADIBC,D^&-,

1^2

T’ff!

[??i

[JW1(l)WI^^WtHBCM^lWnr;

LWS1

19.[^]A14

[WtJrlft?;(l^-MOWIOWRKlMOA,10+4=14(A).

AjZ^^A:A,14;

(2)1x20—2x35+3x10-lx30+2x15+4x5-3x50=-150(A),

(10-8)X(20+35+10+30+15+5+50)=2X165=330(A),

-150+330=180(A);

BS-ASAtBWAftWW180A;

(3)AA-:(35-5)x13x0.8+13x5=325(A),

AA—:30X12=360(A),

???325<360,

(2)i+M6Wm,tt^BPA;

(3)AMMftMi^AA,

ABAAAXAAAiH^TSft?HA.Wl&WT

20.90ADHEE180BARAmbA+OMlffiiTOHf,^JAAA^

[MAIft?:SA4DIBC,EFIFC(BA),

=Z-EFB=90A(MWAA),

@JAA71D//￡F(^AAtl^ffiM^￥A),

(3>Azl+Z2=180?(ffilWif|s)^]*lAW),

@XHAZ2+Z3=180°(BA),

?^rAzZ=z3(IAAW#Alf^),

?JAlWF//DG(AltAA^,MOmf),

?^TKZGDC=zB(Mfi^￥A,IsJfiAlO).

SiZ^^A:90;AD//EF-,180:BA;lAAfiWAlW;AIBAA^,jAii^Wf,RliA

,tm?￡OimTOWJ￡W,Wisffl.

21.[^Ml262

[WIJTIW:(l)^OS^T^:

sjnsms

(2)W?:(4x4+5x2)x(1x1)=26x1=26(cm2).

ikJIM[ft&ffi$RJ^J26cm2;

(3)|M^+fOIW&?OniM'hlE^M,

MfitMtlWMU24M'M77M.

26;2.

(1)1WJfflaift0tn;

(2)MJIM#W?tn;

22.[?]W;--^BD=^AB=^CD,

34

T&BD=xcm,0XB=3xcm,CD=4%cm,

■?■BC=CD-BD=3xcm,

■■■AC=AB+BC=6xcm,

■:&M,NWm&ZAB'CD^J^^,

■■■AM=^AB=l.Sxcm,NC=^CD=2xcm,

■■?MN=AC-AM—NC=6x—1.5%-2%=2.5xcm,

5.MN=20cm,

.-.2.5x=20,

■??x=8,

AC=6x=48(cm).

?1---*—i-1--1----1

AMDBNC

m$BD=x,$AAB=3X,CD=Ax,ffi^BC=CD-BD=3x,ffil^AC=AB+BC=6x,

=IO,BPWHMCM.

MWOJCSm&BD=X,

23.4710

[OriW:(l)$0ffl,Z.DCD'=Z.ECE'=15t°,MzXCB=90°,

/.BCD=90°-15t°,

???CD^^^BCE,

ABCD=Z.DCE=90°-15t°,M^DCE=30°,

???90-15t=30,

Mt#:t=4;

(2)$n?,??■zDCE=30°,CB^^-^DCE,

ADBC=AECB=15°,

???Z.DCD'=15t°,AACB=90°,

???ADCB=15t°-90°,

???15t-90=15,

m#:t=7;

(3)$n?,Z.DCE=30°,CE^il-n^BCD,

???Z.DBE=Z.ECB=30°,tBCD=60°,

RS:ADCD'=15t°,[fi^ACB=90°,

???15t-90=60,

m#:t—10;

(4)￡n?,

???Z.ECE'=15t°,AD'CE'=30°,

AACE=15t°-30°,

CM^ft^ACE,

:■AECM=l^ACE=yt°-15°,

???Z.DCD'=15t°,^ACB=90°,

ABCD=15t°-90°,

???CN^-^ABCD,

115t°

Z.BCN=^BCD=