2021中考数学模拟试题1-4套

3262226332326222633235345622021中考数模拟—01一选题共12小，题4分满分48分1A1B2C3D42A＝aBabaaaD3a535G20202G16.416.4A16410

B10

C10

D104335ACDBB30C+2EFCDCGFG576.5

91226.66.76.8A6.56.6cmC6.7D6.8cm6OODOADCDOAABOA25B20C30D354

题图

6

题图7

8题图xy

a+bA15B15C16168ACOBDAOEOFFBD8cmAE2cmA3cmcmC2.5cmD9ab0yaxaxbA

B

C

D10ABCDDH

菱形22123123123412322．菱形22123123123412322．1112．6S48OHA4B8CD6yax+bx+2x340a0c03+042at

+，，yyA4B3C2

D111题图

12题图12ABy

0A10eq\o\ac(△,A)eq\o\ac(△,)1B1A2eq\o\ac(△,A)eq\o\ac(△,)223eq\o\ac(△,A)eq\o\ac(△,)33ABBA2

B2

C

D2

二填题共小，题4分满24分）13x+210+mm

．14ABCABC90AB2ABCeq\o\ac(△,A)eq\o\ac(△,)BCACDD14题图

16题图15xax4+10a．16ABCBCACEAABC4

．17AB30B60ABDm

2217题图

18题图1865D2DDPBC+三解题共小，分

．19

2

20C2401240AC296032156121001

22CDECDCEAFBFEGGDG1BE2AF23kAOy612AAOC

2212221224ABCABBCBDDECFDABG1CF2ADADGCDAC25xOyyax+bx+yC2121DADBCEBDBDE

8242358343824235834352021中考数模拟—02一选题共12小，题4分满分48分12AMNCPQ2AxxxBx25y153

D633AB

CD4202051090010900A10

B10

C10

D105CDBED63CDEFDFBA147147.5D5题图

6题图6ABCD7lAB2kmAC45BC22.5CCDA4kmCkmDkm7题图

8图8ABCDOB3BACADCA100112.5C120D1359A

B

1212121222﹣1212121222﹣C

D10xx2Axx0Bxx1xx24ACO

Dx1x2A

B

C

D11题图

12题图12ABCD1540EAECFA24B30C3236二填题共小，题4分满24分）13m1x20m141001003154ab16A04BD3AC

16

17图17DC

18eq\o\ac(△,)nn0n

++三解题共小，分19

|5|+2

0

的

2050401075638769788275637112B32000x100215000110000.521

2222ABCDBCEABFDBAFDDBEDEBE1CDE2BDABCABCD23+bCD1

0m820

3PxCODADP

2224PACACBPBP90BC．1APCQ2AD

EQ

．25axbxc1x12BCD3D3DDEBCEDCDE∠ABCD

222224222222222222422222222021中考数模拟—03一选题共12小，题4分满分48分120.6AB0.62

C

DA2

3

6

B

b＝6

b

C＝

b

D

+2

23A

B

C

D459.59.78.8A9.7B9.5CD8.85

+

A

B

C

6ABC9040ABCBeq\o\ac(△,A)eq\o\ac(△,)CCAAA5070CD710km20min2xkmA20B20

D8PBA⊙OCA40C30D

120ACP9ax++cac0cx+

y

22A

B

CD10OABAC8ACBADA5B7C8D9yax+x

5432

0

y

4

22

04

A

x3yC212ABCDCAEFACOAE5BF3A

B

CD410

题图

12

题图14题图二填题共小，题4分满24分）13m0.00000000014814ABCABBCDBC3BDAD12BACABC16ACF

．

．．1．02．．1．0216题图15

17题图

x

m

18题图

．1670201BC1.41.72.417eq\o\ac(△,Rt)AOBOA4O2PABO181l1y11l11x22三解题共小，分192

3.14230

2020260B151020A/B

9001000500

7002010ABA20y1202x314021x1007560x0x601232

22+m02bACAOC412PP23OABCABC110BOCBOCADCOCD601OCD2AOD3AOD

2224yx+bxc0C12y

DBC0ABMxBCH（m0在线段OA上动EFH

251OABOCDOBCOD40ACBDM

AMB22OABOCDAOB90OABOCD30AC

AMB

22222021中考数模拟—04一选题共12小，题4分满分48分1MNa+21a4AMBMNC2xy3

+2xyA3x+2Bx+2C3+2Dxy+23ABDECBD60BDE40AA70B80901004xxyA

B

CD5eq\o\ac(△,Rt)ABC2ABCCeq\o\ac(△,A)eq\o\ac(△,)BCBACBMCMBCMA1B2C3D45题图

7题图6

A

B

C

Da720194DABB45A89.5BDA

B

Csin27D8acxbyax+

2020A

B

CD9OMNOMNBNOAA76B56C54D5210x1xA21B0C2D1ABCDADGHABBCDCADHEDEEFAEA1

B2

C

D128B2ABPyPCPDEFOEPFA3B4C

D611题图

12题图

15题图二填题共小，题4分满24分）13一个数5280科学数示为5.2810则原中0的．14

．

111112222222111112222222222．nn+1n2215ADeq\o\ac(△,Rt)ABACEE半弧三分点BE长为图阴部分面

．1617BOMOB2BBOMON1B1A11AB11OMOMONABACCOMOMB3A33AB33B3eq\o\ac(△,A)eq\o\ac(△,)An17题图

18题图18yax+bx05abc0abc04b+c23abamb三解题共小，分191x+4xk0k

20109101ab

6.83.7690%b7.51.962732124003122252460

22ACPACAOAOE12ABC90OF

eq\o\ac(△,S)eq\o\ac(△,S)Pxyx轴

D