浙江省嵊州市谷來鎮(zhèn)中學(xué)2023-2024學(xué)年七年級數(shù)學(xué)第一學(xué)期期末質(zhì)量檢測模擬試題含解析

2023-2024

W^±^J?^O

2.g?w,U*W^?±?ù????,

-,&#?(?<h?3#,#30#)

1.-2O19$JW<()

11

A.-2019B.2019C.----------D.-------

20192019

2.Tmt,omM<)

A.2a-3a=aB.a3-a2=aC.3ab-4ab=-abD.2a+4a=6a2

3.MW,360TJWfX,

()

A.3.6X102B.360X104C.3.6xl04D.3.6xl06

B.

Q)b-a<l-,?a^b>l-,(3)|a|<|2>|;@ab>l.

B.■________,___d_^___

’-30’3

A.(D?B.(§)?C.(D?D.?@

6.()

171

A.12.74-(------)X0=0B.-24--X3=-2

193

7,2311

C.---------1---------------—D.(---)X6=-1

10310332

7.M,

B.

D.

8.MTX^8o￡^￡W>?Wmf-W.Tffl&iéiEfaW?()

A.560￡^￡^WB.

c.so^^W>??^W-WAD.lU±?MW±ffiW

9.^H=3’\b\=2Ra<b,()

A.1^5B.-1^-5C.1^-5D.-1^5

io.2oi8^i2^^m^?ùsm^-8“c,?i^w^io’c,()

A.-18°cB.18°CC.8°CD.-8°C

-></h?3#,^18^)

u.MèrcT^io°cjg>°c.

12.K^A^R^-ma?Aftios,wjTémmAft,?Mia

WWA.

13.-i+>:3-(-5)+7=.

14./b&WHft??18&,MWM-ZkkAi:2:3,Mê^W-^WMW?.

15.W^<_____________________.

4

16.

J5!j6/+b-c=

H,?T^?-?(*A?^8/h?,^72W)

17.(8W)(1)/bBJ^LUWS?MWB1000J&,OT27.37ü,

———raH

WOc+1+1.5-1.5-2.5+0.5

?^/hHJ?^WSa<JiBc?W^?Hj,MMêW?

(2)HKmA&m

800

(DWf800TC,?A4000T?f?JWaWfct8007ééOW3OW14%?;

4000T?^?WT4000H%M;

￡?^!ffi&^fà#JSaWi4207?,

18.(8#)

M?3mJWAAROWlOt?Wffi.

?Wd>MWJ>W

19.(8#)AB=\2cm,BC=Scm,tiP&Ati?ita,?A^>B~>CDfa^iè??,

'fàD->C-+B^>A&??,$lAti&±%￡P(guān)>MWH?aPWièS^W

\cm,&QéKJia/èA^^2cm,ffl*(^')W/KfesWfaJ.

(1)a-^=W,^PfllaMiS.

(2)?&&PQ,^PQ^mABCDm^t,

(3)??tiP'PW3cm,^2?<JM$AW1C/7?,^?gf?

4>,P&Q20cmwf?jX?ü<.

A,Z,^a^tt^S24A.

(2)Z,mM^giJA80A>120A.^aaS^r?^ff,Z,aa?T^.fi

#7^15,WMm&#fflAi920A,^^WSTAA?

21.(8#)

^?$?KOü?#|-307ü,ZJg￡W?ftW9?ftt

OWtt5II],5^).M:

(2)$n^?^i5^30^^W,OWMW3?￡?WO3^?^fl-4?

22.(10#)W?,O?tOmM,Z.COD^.M,OE^ftZBOC.

(1)%ZAOC=30°,WZDOEtmtlZ)-,

(2)WtZAOCftZDOEm&Zfàfà*

￡,WH^Sè;

(3)^S?4’WzcODM^C)?0t#^Sffl?Wf?S,M^WtHZAOC^ZDOEWStelBj

è<J^M.

23.(10^)?OS^fi:(2x2-xy-y)-2(xy-2x-+y),K^x=-2,?=-|

24.(12#)6/n,jg-&±#4,n,^H&W5,n.3W￡XW7,n(iS#?±#^jE,T

f$^).

(2)

->&??/b?3#,^30#)

1>c

[W1W:-2019f?t?lJM-----—;

2019

tifa-.c.

[?]

2,C

[WMlM:As2a-3a=-a,

Bsa^-a2^^,

Cs3ab-4ab=-ab,?E^ê;

IX2a+4a=6a,

?:C.

M

3sD

[^1&r?i+?t?$HWlfc,10000fê,?r^?m?^axlO"?ü^,a

$13.6,

IW)M:36077=3600000=3.6x106,

ifci&D.

4sC

[MW1OTW:O=?a^5(,RTWM$/A±WT<,?-^±.

c.

5sC

LWl■6JW/><-3,l<a<3,m?￡WBP?T.

[WJ?':h<a,

:.b-a<l;

?\’b<-i,l<a<3,

:.a+b<l-,

?'.'b<-3,l<a<3,

.?.|*|>3,|a|<3,

?’?!?!<1*1;

@'.'b<l,a>l,

:.ab<l,

(D?,

&&C.

LaBtl

ffiw&oamms?^*s,a.??.

6.B

?^<Slfc^iêM?éM^^T|-?^?TBPnr.

17

LWM)A.12.7-H-—)X0=0,HUOt;

19

B.-24--X3=-18,JjQlJB

3

7231

c.—JüIJcm

103103

D.(———)X6=—1,MDiEfa;

32

B.

?mmOWim?Ma.

7,D

r^i??gmf?ttM,PTW^.

(wiM:èapr^*w^M?sACJ?4T,

?D.

r^g#]

8,C

[WM]A:

B:afc&Wig;

C:MOI;

D:

C.

[^m

9.B

[W1è|?|=3,|^|=2nl^,a=±3,b=±2,MèaabaW<W.

[WM:èOWa=±3,b=±2,MèacWftb

ab=2Rt,a=-3,JOOa+b=-3+2=-l,

^b=-2Ff,a=-3,JOOa+b=-2-3=-5,

B.

a?b

10.B

[WJ

[W3M:10-(-8)=18,

B.

M

-.?￡?(**?#<6/J'?,2U8#)

11.-9

(JW)OTW:i-io=-9.

9.

12.1.

[jWliaSW:è#WM?ùA^XA,JOim^ItW#A#;M?A?>12^,W>

A?;^#^MaùA?xA.

JO!)10x+l=12x-1,

x=l,

BP:1A>-^W.

1.

-?-&2r?aW8.

13.i

[W1Si+^in^BPW^.

(W1??:3-(-5)+7=3+5+7=l.

1.

[?ffltl

14.9

[MWJ

èOWflùBMW&S#^X.2x.3x,?^H#HlPM￡18ft,WWI.

x.2x.3x,è?￡W

X+2x+3x=18

MWx=3

?￡W~9

15.-2

4

[MW]fêfêM?M&W?JOe￡M.W+ftmWWO.

[WM]W—W14

44

^^-4-

4

[?]

WSTW￡W^W￡5C.

16.-6

[#W1a.b.cM,

[WMlè^jt?t:Z?-*a2;f?M,a±jim,^-3W^t,

:.b^-2,a=-?,c=3,

?*?a+b—c—-6,

-6.

[?B#]

=.MT?0￡?(#*?#8/h?,￡72#)

17.(1)?28.3;??rtftW<W29.87ü,?<MW25.8Tü;?^HWWW^Hj,

(2)1Té.

[#tff](i)?TO*???.?f?bt^WHj^;

?rhgüi^?Mllt.WWW,BppTW?iJ>^a^J.

(2)awffl^aoéBpnr.

[WM]M:(1)@27.3+1+1.5-1.5=28.3X,

M￡O^,?M28.37ü,

28.3;

@27.3+1+1.5=29.8X,27.3+1+1.5-1.5-2.5=25.8TC,

&■.Wrt<?<W29.8x,ft??W25.8x,

29.8,25.8;

@27.3+1+1.5-1.5-2.5+0.5=26.3X,

V26.3<27.3,

(2)V(4000-800)X14%=4487C>420X,

4000TC,

W^AxTC,EèS.êW,(x-800)xl4%—420,

MW:X=l,

?^jl?pf?MJtlX,

1.

[?]

WSmWisWZffl,

M?W^.

18,IM^37WOT4^A.

[WIMX^AW,MWA^I5?,

[WM]i￡<x^A*W,MBW

8x+5=10x-3

MW:x=4,

.?.8x+5=8x4+5=37

MA37?M^^4^A.

[?Bf]

32

19,(1)—;(2)1sE20;(3)1?g11.5

3

[^Wl(l)lgiS^Pi￡^WS+aQi5^aüfêS=±e-lèS,BPWHi^TxW-7E-^g,WZBP

(2)P?AB?éLhftf,WCDWaQi?Wa,aPE^^acRftWmtièBPW.

(3)fcMOM^mWWW.

[#W1(1)WMW:x+2x=12x2+8,

32

WW:x=—.

3

32

3x?yltf,aP^Qffiil.

(2)VPQ^HMê^ABCD?,

W?AB?à±Etf,^QftCDiai,

2x=12-x,

WW:x=l.

a?QJSSt?llaABt,JW(12+8+12)4-2=16&,11￡MP?S^J?Cftf,PQWf?J￡ABCDffi#?|WW:

(12+8)4-1=20#

^15^Jl#^20W,PQ￥WABCD?

(3)MM:x+2x=32-20

WWx=i

M/5:12+(x-6)+6+3X(x-6)=32+20

WWx=11.5

^±M:X?l^H.5

Laffi]

20,(1)(2)^?ST6^.

r^tfrl1)MfêS?OJHi#?,i+MBPPT^H;

(2)^awsTnx,aM^ü^MEPnrw?tè.

[WWl(DW:i￡èfp,Z.MMSI?JMW.MSJèW:

/11X

(—+—)X=1

1224

WW:X=8,

(2)?WlTy*.WJZJfiMTd-—)=—=(24-2y)^

1224

80y+120(24-2y)=1920

y=6

[?]

21,(1)JU^^20^Bf,(2)^30^^W,5giJ^J^fê,#ZJê^25

[WKD?é{lt=Wx^l,#?H?EF,ZaMMW?üW

￡?O^?>￡4>;t?W?,

IW1

JQlJ30x5+5(x-5)=(30x5+5x)x90%

5x+125=135+4.5x

5x+125-4.5x=135+4.5x-4.5x

0.5x+125=135

0.5x4-125-125=135-125

0.5x=10

0.5xx2=10x2

x=20

^^-^20?,

(2)??EP5gij,15

30X5+5X(15-5)=150+50=200(7G)

5glj,15

(30x54-5xl5)x90%=225x90%=202.5(7ü)

200<202.5,

0f￡m￡￡3$t?5giJ,15^-^w,

15^-E?W,

5glj,30?^^^M:

30x5+5x(30-5)=150+125=275(%)

sglj,30

(30X5+5X30)X90%=300X90%=270(7ü)

270<275,

5giJ,30^-￡W,

30>^W,?^W??kfc^?.

1.2.

22,(1)15°;(2)ZAOC=2ZDOE:(3)ZAOC=360°-2ZDOE

[W1(1)èRT^LBZBOC=180°-ZAOC=150°,SèZCODftMOEWZBOC^HjZDOE^Ou

(2)èZCODM?,OEWZBOCn]WtBZCOE=ZB()E=90"-ZI)OE,fllJW

ZAOC=180°-ZBOC=180°-2ZCOE=180°-2