重慶市渝中學(xué)區(qū)實驗學(xué)校2023-2024學(xué)年數(shù)學(xué)七年級第一學(xué)期期末監(jiān)測試題含解析

2023-2024

üi??:

1.￡WF,?WWWWmiWSWEM

2.

4.^fflRT^ffl^?Hi,

5.WBM^?f￡.#?,>IE^,smzio

-,&M:$/b?3#,^36^.??/bmHiatiE4'M+,

1.HW,jEtàf?<()

A.ab2^^^?&2B.a/,2^V3oh2m￡J5?

c.ab2+a2b%Z$ta,D.-5a2b5

2.M,B&tl&AB=10cin,M1ABW,tiN&AB±.,MN=3cm,NB()

AMNB

A.2cmB.3cmC.5cmD.8cm

3.?&AB//CD,&E,FftftWt?&AB,CD1.,EF,^Zl=49°30,JSüAAEF?ü?^J()

A.130°B.130°30C.131°D.131°30

4.2018WffiWfê￡^￡^M^^^2700?.7üMWW^t?bll^B>a.()

A.2.7xlO10B-27x10'°C.2.7x10"D.0.27xl012

5.M#tnnnW&ümi-2±2-C,()

A.rcB.-8°CC.4°CD.-l’C

.A.^^2X+110X+1,.,.

6.------------------------—=1￡#$M,W()

36

A.2(2x+l)-10x+l=6B.2(2x+l)-lOx-1=1

C.2(2x+l)-(10x+l)=6D.2(2x+l)-10x+l=l

7.BC=-AB,D?JACfà^fc,DC=3cm,WJAB?-|è<()

2

?-----------------?----?------------?

ADBC

79

A.—cmB.4cmC.—cmD.5cm

22

8./bBJaWTFKT.JUW?7üWKrféM35#^zfC;?

zbB?M^sw^^iS?P?u—?mmHiW,<>

2

A.m?B.fêTc.D.

9.()

A.6/+Z?=0B.a=-bC.a=\b\D.|?|=|b|

22

10.#3.14.—.0.ZT,1.6Jè54^+,?lftM4ftW()

7

A.14B.24*C.34D.44

11.HITOS()

?Jè&ffiaf?^MaMal?WOS;@W±|0],@^ZAOC=2ZBOC,

JQIJOB?ZAOCMY^.

A.14*B.24"C.34"D.44-

12.BfcJWS&a*l,Mffi—&:2WOJ?-!-=-l,7-77=|.M

1-a1-21-(-2)3

a}=-4,a,^a}?fêfaft,a3^a2a4fèa3WJa,+a2+a3+a4+...+aftl?${O

A.-55B.55C.-65D.65

(??4#,W20#,

13.^M^fox2/+1^ax'"y*WJ/n-2n=.________.

65

14.?4’CjHamS<____________________________________°c.

15.M,^j^^ABCD,^ZCBDm^BD??^ZC'BD,C'BftADfàttrtiE,&ZABE'fàBE??

^^A'BE,%ZA'BD=a,WZCBDfê$&j.è9^T?^)

m42n+n

16.^W^2ab-^-5ab'>^M;WJm=?

17.14-^MM±fe^^raZra]W￥??.gpi.4961Z.km.ffl

1.4961Z?._________.

H.(???7/J^,)

18.(55?Ml,taOfafaOC,=

WaOit,—iiOV?#^0A±,?àOM?MABf?T^r.

(1)Ml+KH??^O?JW#^|Rj^SS2^èS,^OM^mOAl,

<___’;

(2)?M24?aüH^^OféW<|-^?^SS3?fjf?S,^OM&ABOCfàM,JQlJ

ABON-ACOM=°;

(3)?±OMO1moi]?3mf?O*,O15°aOMZBOC

WWW,W,

19.(55?HTOT-+-=^W,?:a=b=l.+-=

232+3232+3

)faM&a,b^?ffi#W”,?^(a,b).

(1)^(1,k)>“ffiW”,^kM:

(2)lL^fB-4-(ai,hx),&M1,_aa#l;

22

(3)^(m,n-[4/?2-2(3n-l)]f?f?.

20.(85?^HePA??4OO5|Cffi38IW,

21.(105?(1)-------‘2±±1=5

23

2x-3y-1

(2)

x+(yy-—1

22.(105?M,C^MAD-^,KAP=8a;?,BD=2cm.

■____________?______?______?

ACRD

(1)#A?i￡.

(2)AD±,REA=3m,^.BEffj^z.

23.(125?BA=3x2-2xy+y2,B=2x+3xy-4y2,

(1)A-2B;

(2)2A+?.

-,**?#12^?,e<h?3#,

1,B

[WMlA.&?3,MW:

B-ab1^J?ab2fè^&i,jEfit;

C.ab2+a2b%&RR,&?3,

D.-5a2bW^M-5,

?:B.

[?]

2,A

[#flf]ffthAM=BM,MJHt?igMN,BPnrntBNB.

[WM]VAB=10cm,

.?.AM=BM=5cm

’.'MA=3cm,

.'.NB=MB-MN=5-3=2cm

tft&sA.

[?]

WMIS.

3,B

[##T]?^￥W^Wtt^WZl+ZAEF=lXO°,^èB^JZ1=49°3O'BPTOSJZAEFW?^.

[WM]M:AB!/CD,

.?.Zl+ZAEF=180°,

VZI=49°30,

ZAEF=180o-Zl=180°-49o30'=130°30.

B.

[afêi

4.C

[WJM^l<|a|<10,gfO^aBf,

nMiE&;W,

[#JS1JS:2700^=270000000000=2.7x1011

?C.

l<|a|<10,n^J?,

5,D

[#0r]nm?fêffl.nT^m.

(W1JS:V-2-2=-4(’C),-2+2=0CC),

-4’CSO’C,

A,B>

t&J&:D.

Laffi]

6>c

L^-tfrl^mW^LU?gpnT.

[W1

2(2x+l)-(10x+l)=1.

C.

iwg?#T(W￡-4^?O

7>B

[##T]AB-fejAcw&wim

[WW]':BC=-AB

2

132

:.AC=AB+BC=AB+—AB=—AB,?AB=-AC

223

VD^jACW+?,DC=3cm

.’.AC-2CD-6cm

22

.*.AB=-AC=-x6=4(cm)

33

iftjfesB.

[Affil

8,D

[#ffi]

[W1Wa35a+55b-,

B

^nn^th^^W?^x(35+55);

lji!j^|^x(35+55)-(35a+55/7)=10(fl-/?);

D.

[?]

9,C

[##T1Saa^OJnTüE^-^jE^K^T.

[WW1W:

.*.<2+Z?=0,

.*?a=-b,

?’*H=W’

?ftA,B,DiEl,

^?=m,b=-\,m|*|=h.-.6z=|z?|s

Sa=-1B?,b=l,WJ|*|=1,C^~

C.

IMJ

10,A

[5WJ?SWWR.

22

(W1M:a3.14,y,0,?r,1.6&5'MW,￡1

A.

[?1

11,B

3Hfam?ijE?￡,

rwi(D?êtê?t?s,&iEe;

&ot;

@^OB￡ZAOC[WBP^JZAOC?ù￥^,^?ZAOCfl'WJW.

i!fc&:B

12,A

^iJM^ai,a2>a3,a4...^tBis^>MW*,

[W]Vai=-4

11_1

a2-l-?!”I-(-4)~5’

11_5

4?

5

—=A=-4

a4-1-a3?_5>

4

54

.1551

ci,1+2a,+CL3=ci4,+CL5+ci6,-...=CL58X+CL59,,+a6,.0,=-4H---F—=-------,’C6L1,=a,1=-4

.*?<2|+ci-,+ci^+ci^+...+<zfi|=(<Z|+a-,+)x20+(—4)=—x20+(—4)=—55

A.

IMI

~,(?4#,W#20#,

13,-4

[?WJ?&?(?.m=2,n=3,l?lljm-2n=-4

14,-1

[JWtfrlW:-5+4,

W:-5+4-1(“O,

.?.^^4’cjéMM-ir.

ife^^J-1.

?Bf:iHsm&f?M,aiSMi:,<HiJ>5￡-5+4*t??f?￡fé.

a

15,30°+—

3

[##rl^ZCBD=x,^?f^m^^ZCBD=ZC'BD=x

[WJM:TS:ZCBD=X,t?fê?rSWttMRlW:ACBD=ACBD=x,ZABE=ZABE

&tty&ABCD*,ZABC=90°,MZABE=XA'BE=90°-2x

:.ZABD=ZC'BD-ZABE=a

:.x-?9(r-2x)=ct

a

.?.x=30°+—

3

AZCBD=30°+—

3

30°+1

ZA'BD=ZC'BD-ZABE,

16,8

[WM]M:èSjgoOl:m=2,4=n+l

.*.m=2,n=3,

.?.mn=23=8,

17,1.496x10*

[WJ^?a?W?^^axlO"W^,￡+l<|a|<10,n^j?.nWW,WW&?atf,

nWWW'bM^Wft&t?l^.nSO;a?W^Ma<iW,

n￡M

[WM]M;?1.4961.496x1,

1.496X1.

[?]

^ie^?éW?^^axlO"W^,X*l<|a|<10,n^?,

aWW#nWtt.

18,(1)90;(2)30;(3)16.

(DM^WMPT^^WA^ZMO?V;

(2)$nS3,^!jffl￥?W?X,éé-ê-B^^:ZAOC:ZBOC=l:2,^WZAOC=60°,^é<?WW,WWIfc

S^MJt^ZAO3/-ZWC=30°;

(3)g?O:aOM^ZBOCIlt,M160’240°.

[WM1M:(1)^^ZMON=1°,^^1.

(2)3,

ZAOM-ZNOC=30°,Sè^nT:VZAOC+ZBOC=lSO°,ZAOC:ZBOC=l:2,

:.ZAOC+2ZAOC=IM°,

ZAOC=60°,

ZAON+CON=6C,?

VZMON=l°,

ZAOM+ZAON=1°,?

(2)-?,WZAOM-ZCON=M°.

(3)16.

?B±-a,

ZAOC:ZBOC=2‘.\,

f?ftkZAOC=\.20°,ZBOC=60°,

3OMZBOC^^m,

ZAOC=-ZBOC=-x60°=30°,

22

OMfat?=90°+120"+30"=240°,

240

=16,

OMWZBOCWWW,016

[?]

99

19>(1)k=—;(2)(2,—);(3)-2

42

rwi(i)

(2)

1kI+k

ci)-,

235

15+llk=6+6k,

9

fafak=--;

4

-92-9

(2)V22_23_1?2_4-9_1?

2+3~22~22+3~10”2

9

.2-2-—

??2,2=___2’

232+3

9

(3)èMW'-+-=^±Zi.11^9m+4n=l,

232+3

22

-----n-Am+6n-2

3

=-3m—n-2=-—(9m+4n)-2=-2.

33

IMI

20.

[##fl??&,

[W1

400-xx..

<:+—=63

68

flS?SW:4(400-x)+3x=1512

m-.x=88

[?]

21.(1)x=7;(