阿里市重點(diǎn)中學(xué)2023-2024學(xué)年七年級(jí)數(shù)學(xué)第一學(xué)期期末統(tǒng)考模擬試題含解析

BSAOt&2023-2024

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i.()

22

A.-2,2B.3,1C.----,2D.-,1

33

2.04“^:0,-1,-2,-3,()

A.-3B.0c.-1D.-2

3.?IUT-WWf??:0,-1,4,-9,16,-25,,WJ^21W<()

A.441B.^441C.-400D.400

4.Ma,-a,-1aWb3:M￡()

.7

-3*-2-101>

A.a<-a<-1B.-a<a<-1C.-a<-l<aD.a<-l<-a

5.MabccKO,M??,ft??mWSl()

A.44“B.34“C.24“D.14“

6.8tm&()

11

A.-8B.8C.-D.--

88

7.WM

?^H=8,lü!)/n=-8;

??-m,—,m2,m4<,m2§￡~m;

m

@?￡Tw+—

ni

()

A.14“B.24“c.34“D.44

8.?E^g--—=li^Js,?m^().

23

A.3x-2(x-l)=lB.3x+2x-2=6C.3x-2x-2=6D.3x-2(x-l)=6

///I

10.2003W^E>*4t￡W>WM”±E?ü?^S>

if?.2018^,146.59fox,W146.59()

A.1.4659xl07B.1.4659xl09C.146.59xl08D.1.4659x10'"

11.()

A.8^30#B.9^30#

C.10^30#D.

12.&>|a+2|+(b-1)(a+b)20,’&<j{I}g()

A.3B.-3C.1D.-1

-,(?4#,W2o#,

13.m-n=5,-3/M+3n-5l?ü'?lê.

14.+?^??iaaT-l?

^5^,/hWl>hMS&3M;/NS^5>N&￡*3J2M.

/>??”(&:M,^h?,/bw&ü^s^jym,ajg?it,

15.20cm,WJAA'?ù^cm.

16.M,^iMA^é30%,60°,MWB

3$f?A^H?1:2,j9PA^#in“X'è”S^ja<JA^^^A^W___%.

4gyat\

'?/W/

17.%i?&mia?b=4ab-b,$D:203=4x2x3-3=21.^?gigü5Mi+?

3?(-4)=.

H.(AA?^7/h?,

18.(5#)2018^7êH^m#,AièSbtW,(3)(4)

TO|H)-?^(iOE-?#i03Ag?,

MJ^ASVA1-50A50~100A100!U±A

504540

(1)ül!|-?rfê#48757ü,3PAH.0gE#W^^^^7

(2)

(3)wsm^iüWMiiK^s^*M327ü,(2)IW??^,wi+^a^w?^mww

19.(5^-)ans?,BfcmaAB=14cm,￡CABtfà-'b??tiD,

(1)?!l￡>E=cm-,^AC=6cm,^]DE=cm;

(2)WBS;W^BèùK;

(3)ftlW:M?,&?ZAOB=130°,üAWrtW>-aC?lt^OC,??OD.OEftftWi?ZAOCft

ZBOC,wZDOEOC

20.(85?M,BMiW^ABCDm-fc^a,BEFGtfyüL&ftb(b<a),tiG&SlBCt,&V.&&AB

f?féièaLt,DE&OCTMT&&FH.DF.

(1)ffla,b%jji/\DHFWjfaf?,#4tfê?;

(2)?MWtAEm^MC.MF.CF,

?^a,b^AMCFffy^,

?ttgaMFC△DHFWffi^RW^/b.

21.(105J-)S^??^5(M)7ê,WWféffl-lOOTG.m

90%#&.

(x>8)

(D^x=36,

(2)

22.(105?

Tm??g?OlT,

‘?êA??M

(1)A;

(2)

(3)^fê-tW?W^?ioooA,WttTt-^W?&AM￡W&&AT^i2ftf?A￡.

n

A0^n<3

B3<?<6

C6^/I<9

D9^n<12

E12<n<15

F15^n<18

2x+l5x-l

23.(12#)jTF?S:—-----=1.

36

->i￡M:AA?￡U24yh?,</b?3#,36RW-^M^-ê-?S5^W.

kC

ft?BPnI.

[WM]2,

33

C.

IMJ

2>A

[MtfüWWW*/bl￡&WM,Wfo,?<l^o,M^-i

[WMlV|-2|=2,|-1|=1,|-1|=1,

W1<2<1,.‘.-i>-2>-i

.‘.0>-l>-2>-l

fàfà:A.

ra?]

3>D

(n-1)WW,IIPTOM.

[WM1M:M^O,-1,4,-9,16,-25,,lW￡,

(n-DWW,

.?.^21Mfc>(21-l)2=400.

D

[?]

-miaT,

4,D

[Mtfr]a<-2,a<-1<-a.

[WM]M:Va<-1,

?*.a<-1<-a.

ift&D.

[?]

*??Wa^/btL^:O*f?,?bT0?m?/h.-èW7?.

5,B

[W1A?:&Mabcd<0,WW.

B

[￡?]

6.C

[##T]iaùMwa^j^?wBP^.

(W1fa:S^8x1=1,

8

8

ttiac.

[^Btl

wtTWM,wsomim^.

7>D

r##f]?mmoa,WJW?;?H=8;￡ttimM,M^a-ni?WMfflSPRT??;

w#?awmTiw±ttHP^w(3);w?+l--2>*l->oEP^mf?.

mVm

[W]v￡M?JM?f?￡ii

:.m<0

.’.-m>0,M(DiE^;

#|/n|=8,WJm=±8

Xm<0,UOm=-8,

1

<E~m,—,m’',mT

m

m<-lHt,

a-l<m<0Ht,

am=-10t,&(3)OI;

??oI1

.mH-----2.m9—>0

mNm

.’.m+—>2m^—-2,r^?lE^;

m\m

I).

[?]

MB^#?KüW..

8,D

[Mfl?lOTWtfr:3x-2(x-1)=6,

tt?&D.

9.C

[#tfrl?mW3JW￡mW^.

[WM]Ms^-B?a-4-^lE^.

M:c.

[￡?]

*SW?m#f?=mM?ià<WSm?^>?W.

10.D

[#tfr]M*l^laKlO,n^W.Mnaùm.

[WM]146.591.4659X1O10.

a?:D.

[^Wl

MlE??aè9<^nM.

11.B

[W]IWM?jjOm.

O

[WM]AM,WfêlR]6,W^[?]8^9?<J^|'B],^?>30°X2+I5°=75;

BM,Wfê[R]6,Wfêfn]9^10a<j4’l's],^^30ox3+15o=105o;

CM,Wfê[?]6,fOf-féfà10W^?^30°x4+15o=135°

DM^,H^jB>jE^W.

Olfà-.B.

[?]

12.D

bél?fé,

[WM]V|a+2|+(b-1)2=0,

.‘.a+2=0,b-1=0,

.*.a=-2,b=l,

.".(a+b)20,9=(-2+1)2,,l9=-l.

MD.

IMI

??4#,SW,

13,-1.

[##?]

[WM]M:m-n=5,

.*.—3/77+3/7—5

=-3(/T?-RI)-5

=-3x5-5

=-15-5

=-20,

-20.

[?]

5x+y=3

14,

x+5}>=2

5x+j=3

[WMlM:

x+5y=2

;5x+y=3

x-l-5y=2

[?]

20

15,

13

N?AMf?ta,BJWAN=NM=-AM=-BM=-BN=-AB,MtgJgS

2234

20cm,BPnT^glJAN+MN+BM+AM+BN+AB=20,j????ffH1AN?ù-fè.

[W1US:M,

A?---------?----------?---------------------B

NM

1111

.*.AN=NM=-AM=-BM=-BN=-AB,

2234

AM=BM=2AN,BN=3AN,AB=4AN,

Xv20cm,

AN+MN+BM+AM+BN+AB=20,

AN+AN+2AN+2AN+3AN+4AN=20,

20

AN=—cm,

13

20

13

[a0?l

16,20

(Mi^^-tfr:è“MMWia^>6oo,i=2”nm,

M=^a?jA^é^A^Mtt^l=60o4-360°=i

6

!WWWAlfc<WI^J4X24’

63

-4_4_30%=20%.

36

20%.

?:^Wi+S.

17,-1

[$<]^Wris?OJ^SP^.

LWM]M:3?(-4)=4x3x(-4)-(-4)=^18+4=-44.

-1.

[?]

??TWSTOiO,IEfàS|^iê>OK

=.M^?(AA?7A?,

18.(1)H$E<55A,HSW48A;(2)755%;(3)25%

MASMpm^M;

(2)WüEH^M?IOOAIU±,Bpwait?m

(3)?W/&A>32%BPnT?tHMA,iU5ffl$?WjWPW5iJWS

<

[WM1M:(DiJERx^m,

45x+50y=4875?

x+y=103?

x=55

f?fa:1,o-

y=48

HM<55A,HB<48A.

(2)

103x40=4120%,

.’.PI^WA:4875-4120=755%.

(3)j￡A:32x103=3296%,

.’.ifijfê=4120-3296=824%,

824

.*.=-^2-x100%=25%,

3296

g:ia^tHWraW^!lW^25%.

[?]

19.(1)7;7(2)7cm;(3)JOW

[$Ari(Dm??A??^BPrw?;

(2)MJg^A^?ABPnr^0^DE?9^A^$;

(3)W?Y^?ABPnr^B^ZDOEOCiWSA^.

[WM1M:(DVAB=14cm,CW>ABf?Aa,

11

/.AC=BC=-AB=-X14=7,

22

V?D.E^J^AC^BC^Aa,

II

.*.DC=—AC,CE=-BC,

22

III

DE=DC+CE=—AC+—BC=—X14=7;

222

VAC=6,.\BC=AB-AC=8

7aD,E^IJ>ACfllBC^+?,

11

DC=—AC=3,CE=-BC=4,

22

DE=DC+CE=3+4=7;

?fc^^7,7;

(2)DEfa^t?^,

aè&T:MüWACM,ffMDC=-AC

2

aMêWBCMfflkCE=-BC.

2

^f^DE=DC+CE=-AC+-BC=-AB=-xl4=7cw

2222

ff?WDEDE=-AB=-x14=1cm

22

(3)fà^OD^ftAAOC,$fèkZ.DOC=—Z.AOC.

2

WWE^ftABOC,mZEOC=-ZBOC.

2

W^DOE=ADOC+AEOC=-AAOC+-ZBOC=-ZAOB.

222

0ZAOB=130°,ffrW.ZDOE=-ZAOB=-x130°=65°

22

0flU,

[?]

11,1,

20,(1)-ab;(2)?-a-+-b~,?S>S.

244MCFDHF

L^Hfrl(i)Ji-féDC^nEF^iEf-N>DIIF=SDEF-SHEF,SADEFSHEFgpnT.

—

(2)?IWféiéDC;fnEF$^aMaMnTftSMCF^miMENCCFNMF.F’$WiMF.NC'$CFN^nsMEF

BP?T.

MCF-SDHFBPBPRT^J5MCF-SDHF>0,W?rAMCFADHF

(WM1(1)?jffl,

???S°’DHF-S°’DEF-°S’HEF'

S=—xEFxAE-—xbx(a+b)=—ab+—b2,S=-xEFxBE=-b2.

DnFEF2222HFF22

22

SDHF=—ab+—b-—b=—ab.

DHF2222

(2)?M,

???S°’MCF-~S°\’MlMF.NC-S’CFN-S°’MF.F?

NF=a-b.

'.'M^AE^fc,AE=a+b,

.a+b

ME=------,

2

5]]

UCF=^(CN+ME)XNE--XCNXNF--XMEXEF,

or,r.1z>a+b'1,,1a+b,

gpS=-x(b-\-------)xa—bx(a-b)—x------xb,

MCF222

11,2

MCF~4a2+4b?

12+-b2--ab,BPS

?$MCF$aa

DHF~MCFDHF~(22’

42

11

—a—

22

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??°MCF°DHFBP$MCF>$DHF?

/\MCF&DHFMW.

21,(1)(2)^W^?jW&x$j40ltf,

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