湖北洪湖市瞿家灣中學(xué)2023-2024學(xué)年數(shù)學(xué)七年級(jí)第一學(xué)期期末綜合測(cè)試模擬試題含解析

2023-2024

TW^'?^:

i.WBJ&Mmm?OOSm,?Wfflo.

2.^?Bir,UX?￡?*K±W

-,ifcg?(?/b?3#,#30#)

i.T?m?è+?Bi??()

A.B.

c.&&&&ABD.??MM

2.-^?M?^?^180?/^,

(TC)(7G)

A^1500100

B^300060

C^400040

Wlb20#:,W1500+100X20=3500J?.55WJ

()

A.B.

C.D.

3.￡Wxm,M+#￡A?45%,>4￡￡AM()

A.45%xB.55%xC.——D.——

45%55%

4.“a^^’MM+aWWSW&üW.67500m?,?67500()

A.675X102B.67.5X103C.6.75xlO5D.6.75xl04

5.a,_a\a\_a\a\_a^,....................^2020^M^>()

A.2020aB.-2020aC.a2020D.-a2020

6.A^+/l^,^M±t?/iz:?^?^40%,a4’Afê^TiéJ5^BP^30%.WJ

rmfcim??()

A.?B.MTc.D.

7.^a,hSA?,WJ-4?/?W<A

B.-1C.1D.0

8.-v^?4x-3w=2aüM-v=/7z,JüI]/?()

22

A.2B.-2C.-D.-----

77

fa]rt5^-?iWT10#￡|HJZ#,$￡WJTWlft40m2iaffi,10m2

?ffi,^^faJfit^WJMffiffi^xm2,MT^jrajE??9Jt()

3x-50_5(x-10)+403%+50_5(x-10)-40

8"108"10

8x+5010x-408x-5010x+40

C.-----------=-------------+10D.-----------=-------------+10

3535

io.ftiffl,()

A.Z3+Z4=180°B.Z3=Z4C.Zl+Z3=180°D.Z1=Z2

->￡18#)

H.6#mf,M#￥lW^Z&<J2f?,￡,W_______￡?

12.^x=-40￡R^X2-2X6ù<^._________.

13.B&2fl-llW#M±3,A+2f?￡#?>2,

14.?T?llO0L2,5,14-,

15.$3:30#,___________S.

16.B&￡#*aùMy=(a-l)x+2a-4,ax=-lBt,y=0.3P4,^Mm#-10B￡_____,

H>^T^?(*^?￡8/b?,￡72#)

x—4x—3

17.(8#)^?:2+—-=X—.

63

18.(8#)$nS,B??AB=10cm,C>D>^gAB±M￡,KAC=BD=8cm,M.AD

sRtè&MNme?.

i1iààI

ANDMCB

19.(8#)￡?m?ù^w??7ü,?^J?W^?ù7O%,

(DP

(2)￡a=1007?,p=12,Ji!0Mfl??WM2j￡4>7?7G?

20.(8#)M,B.C^^AD±WMa,&AB=-}AD,?M,C##J>AD.BD?ù+?,BM=2,

MCWié

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i-=q‘i-=?^‘(Qi?-iMBi)i-(q,?-,qB￡)+q,?-!WfiW?

|x(l-)4-9-J-?

(81+)-(SI-)-(￡!-)+(ll-)?

:K44(T)(#0T)-82

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2sA

[##f]<fc#HJ-^Om&OJt?>55&,B^sc?￡M￥^WWT3W￡d>jn;

55tt^A^BPRL

[W?:-^rtfê>55&,?:1500+100X55=7000(%)

J^B^M^A,55&,’?:3000+60X55=6300(Tü)

—^P3fê>55&,4000+40X55=6200<7ü)

-^rtt?t>55&,180X55=9900(Tü)

V6200<6300<7000<9900,

/.c

$ü&:A.

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ittS^^?èT^S^aù^'ê-isM.MM2S,S??,ftJsMM;

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rw??]M:?+#±A?45%,m^^AWd-45%)x=55%x.

TO:B.

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4sD

rwi10^#/bT1??^?X1O"(1<|a|<10)W^,^rlU>?nriU?eg?^

ad<iai<io)^miu?wf?^BppT.

LWl}E67500^/bW6.75^/bT10000(BPlO4)fê,675006.75X104,MD?^.

l&M.

[?m

ffi&SHèATlOj&r/hT1W^^?X1O"(1<|a|<10)aù^JtW?^.

5,D

^JsBPnTWHi^2020^

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[WWJW:-W?^J:a,_a\a\_a\a\_a\-,

l)n+,?a",

n=2020Ht,(-D2020*'??2020-a2020,

D.

[?1

6>B

[W1BPTOg.

[WJM:(1+40%)X(1-30%)

=1.4x0.7

=0.98<l

io^^±MffitEMT;

B.

[￡gf]

7,A

rwii

iwm?:a,Z>S^mWJab=l

-4ab=-4

A

r^m

8>A

CW]t?x=m'ftA^@4x-3>?7=2,mW-Tü-^^BPRi.

[WJ?:V^TX^?4X-3??=2M>X=W,

.'.4m-3m=l,

.?.m=l.

Wfc:A.

9sD

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lOx+40^,10m2,WOT:

8x-5010x+40,

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35

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10sA

rwi&W?X>WIW&S

[#M1AM+Z3^Z4?ùMA>-aaRJ^rtft,#r^Z3+Z4=180°ftfAB//CD;

BM+Z3^Z4TOZ3=Z40^ABCD

CM4’Zl^Z3m??>~Wg|*lft,0fUàaZl+Z3=18O°ltf,ABCD

Di&WZlfllZ2ff?tU^Zl=Z2ABCD

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Zs?/h?3fr,￡18#)

Ils2412

2x^,^lW&>ZM3fê,nr^J^?^.

[W]2x^,WBM:2x-6=3(x-6)

x=12

.\2x=24

EF?24#,Z?12#.

tt^^:24,12

[?W1

12s24

r#wieppimij^.

[W1M:

x~-2x=(-4)2-2X(-4)=16+8=24;

24.

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13,1

bM,Ma,bJeSKAi?W?*

[#M1M=2a-l=(±3)2=9,b+2=23,

.'.a=5,b=6,

?’.b-a=l,

1.

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?,a,bW????M^.

14,1

3SW?,éiltWBJMs^.

[#M1M:V2-l=l=3?,

5-2=3=31,

14-5=9=32,

.*.^5^^:14+3J=14+27=1.

1.

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15,1

[W1?ffi?i2WWTi2W(W^30°,WW^?O.5%

[WJV3a30#,^ffi±m(xù)#fê[R)3-^4^f0],Wfê|al6(

:.m30WX?T0.5°X30=15°,

.-.3?30#,^ffi±m(xù)#W^mft^30ox6-(3x30°+15o)=75°.

r?]

?f?3o°;w?w^6°,nmwiw.?E^wm^s?

16,-6

CW1t?xfljym.v=(fl-l)x+2fl-4,^tHa<Epg|^ià^,ffiCy=-ioRA?ié^^BPnT.

rwit?hVax=-m,y=0,ftA.V=(fl-l)x+2a-4,

0=(a-l)x(-l)+2a-4,

t?W:a=3,

JQlJy=2x+2,-$■y=-10,

l￥W:x=-6.

-6.

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H,￡72#)

2

17,x=-

3

[WJifê#,^JsM,^141^,JOtft&bBPRT^IJ^M.

x—4x—3

[W]??:2+——-x-^

63

.’.12+x-4=6x—2(x—3),

.'.x+8=4x+6,

.’.—3x=—2,

2

:.x=—.

3

[?m

18,3cm.

]nr^HJAD=BC,?^HiADW^,+MAN±jAM?ù?,MN

IW?-

[W??lVAC=BD,

AB-AC=AB-BD,

BPBC=AD,

VAB=10cm,AC=BD=8cm,

AD=10-8=2cm,

VM,N^J^^AC,ADf?+a,

1

AN=—AD=lcm,AM=4cm,

2

MN=AM-AN=4-l=3cm.

[?]

19,(1)a(30%-p%).(2)W18TJT?.

[W1(1)

(2)(D

[W]fi?:(Da(l-70%-p%)=a(30%-p%);

(2)t??=10075,P=12fWf:100x(30%-12%)=100xl8%=18(TJX),

g:

20,2

112

[M#f]èB&?B=-AD,&AD=x,PJWAB=-x,BD=—x,XSMM,CAD,BD?ü^?,?T^

333

111111

BM=AM-AB=-x-x=-x=2,x=12,O-MC=DM-DC=-x-x=-x=2

236236

[WmM:^AD=X

VAB=-AD

3

12

..AB=—x?BD=—x>

33

VaM,C3HOAD,BDW'f?,

111

.*.BM=AM-AB=—x-—x=—x

236

VBM=2

.’.x=12

1I1

MC=DM-DC=-x--x=-x=2

236

[?1

2K(1)13;(2)6;(3)—

7

LW)(1)tefcttiBD,BCBpPT;

(2)?^tHACOJAD,?^BCM.^WtbANkBN,BPWMMNftj-￡;

(3)ftMAC#?!)AD.Sg?ADf?+?,?NftBCtAM>BN,WAM:BN=3:4

BPWMttfjfê.

[WJ(1)VBD=2ADS.BD+AD=AB,

22

.*.BD=—AB=—x\5=10,

33

/.BC^BD+DC=10+3=13-,

(2)è(1)&:BC=13,

:.AC=AB-BC=15-13=2,

/.AD=AC+CD=2+3=5.

?:&M%AD*ti,

:.AM=-AD=-x5=~.

222

N&BC^ti,

1113

.’.BN=-BC=-xl3=—,

222

:.MN=AB-AM-BN

=15-9

=6;

(3)

^AC=2+t,

AD=AC+CD=2+f+3=5+Z.

‘.’^M^ADA1^,

:.AM=-AD=-x(