2021-2022年九年級數(shù)學(xué)中考模擬試題帶解析

2021年九年級考模擬考試數(shù)

學(xué)

試

題一選題本滿分每題分）AB2C1a2b1

DA1B1CD2401000000401000000A40.17

B4.01107

C

D4.01A

B

C

DP2A12

B2

C1

D1Aa2

+b2

Ba4a4

Ca2

a3

a6

Da23

a6AC

BD1A1

B3Cx

D

21A2BC0yDx0POBA

B25

C40

D50eq\o\ac(△,Rt)ABCB90ABACDDEBCGBGACGA1B

C2DACBDOOEABCA

B20

C25

D30二填題本滿分每題分）4

BCBMAD12ENFMABCDEFFDFDC

n

三解題本滿68分）12

ABCDE

0.30.112D

3

494.52ABAE10CDEitanDEMDEBA

6ABCDEBCCDCAFDEBC1FCDeq\o\ac(△,①)ADF②DEAF2DF①②ax2+bxa01A37Bm1AB2AMAM2

DCM

D3PQM

參考答案一選題本滿分每題分）AB2C22B1a2b1

DA1B1CD221ba112a212b12211A401000000401000000A40.17

B4.01107

C

D4.01a101a1010

A

B

C

DDP2A12

B2

C1

D1PxyOPx12DAa2

+b2

Ba4a4

Ca2

a3

a6

Da23

a62

B4a3Ca

aDa236DAC

BDx2x1B

A1

B3Cx

Dxx1x1xx1D

21A2BC0yDx00y

2k210BkCk0Dk0yxDPOBA

B25

C40

D50OA9050

OAAPPAO40AOPOAAOPBAOP50Beq\o\ac(△,Rt)ABCB90ABACDDEBCGBGACGA1B

C2DAGACGGAC

ACG41ACBDOOEABCA

B20

C25

D30ABDCBDABC70BODOABC140CBD70BODEBCOEOD20ODEOEDB二填題本滿分每題分）42xx242

aBCBMAD12ENFM20

ADAMDM10EFBMEMFMNFMFMNADBC12AM6D90BMEBMEMENFNBCMENFN55+5+5+520ABCDEFFDFDC90ABCDEFE120EDFEFD30FDC907

1+2n11+n1+2

1+211+2

21221+212

32121+2+1+343221+24+2

n12

1+1+52451+n三解題本滿68分）1

22483+9+112

xy

ABCDE

0.30.1180.352D

3

494.52

123408n10.05+0.2+0.3+0.10.350.352D36012632084.589.589.5442ABAE10C

DEitanDEMDEBADH，EFEDHFDFDHAHANCNBAHDDHEDHFDE20i1

10DF10

DHDF+AHDHANAH+20+10BCN20

+30ABBN10

6ABCDEBCCD

CAFDEBC1FCDeq\o\ac(△,①)ADF②DEAF2DF①②①②ADFSASCDECDE+90DAF+AGD902①PEAD6PE

EGDE②①1ABCDADCBCDPCF90DFPCFADFPCF②1BCBECBCDDFCFDFCEADFADDCADF

DAFCDE+90+90AGDDEAF2①2CPBE3PEADADDGEGeq\o\ac(△,Rt)DCEDG

②DCEDGCGDE

CPCG

DCMCDCMCAax2+bxa01A37Bm1AB2AMAM2

DCM

D3PQMya122SDHxeq\o\ac(△,)eq\o\ac(△,S)

x2x1+311x23AMAMyx12A1yx2+2+8B

DCMCDCMCAABy212xC1DABHDx

x+8xx2S