2020-2021学年河南省郑州市七年级(上)期末数学试卷

学年河南省郑州七年级第一期期末数试卷一选题共10小题，题3分共30分）A3B01D6A

BC

DABCDANMBPMMNCPMPNDNM20201212

200565%200560A6

B0.6109C60

D

12xx50x200x200

0.10.20.3AaB0.3a0.4DA

B

C

D4xcmA4x4

Bx5x4x+4

Dx5x

3

b

A0B12D310A1B2CD4二填题每分共分1112a313/500/

14A120A

15CABACBCAB16Acm/B1/BAPt

sAB三解题共55分1634+|12020171B23

x2+1

D2x218A010B1020C2030DtEt

DCCADABADBBEDDEDBCCEECBDEEDDEDBBCCDCEDDABDDCDDEDCE50At10BtCtD40Et40

1231920

①

②

③

④

⑤1b23202121COD6OMBOC1AOCDOM2AOC100DOM3AOC180DOM3AOBAOB120OMCODDOC60+4230DOM

220kmh/5km

参考答案一选题共10小题，题3分共30分）A3B01D31076A

BC

DABCD

BCDCANMBPMMNCPMPNDNMAMNNMBPMMNCPMPNDNM20201212200565%200560A6

B0.6109

C60

D

6060000000006.0109D12

xx50x200x200

0.10.20.3AaaC

B0.3

Ca0.4DA

B

C

DD4xcmA4x4

Bx5x4x+4

Dx5xxcmxcm45x

3A0B12D33b+2+30+2+4aaba

bC10A1

B2CD4xx141x1441xx1x5x51494x1271341227x1341x40x

xx214D二填题每分共分1112012012

8a3

a3

aa3813/500/

11.462.5321.462

14A120A8Axx600+120x8A815CABACBCAB16Acm/B1/BAPt

sABPP88①ABAB22BQAQAB8②BQBQ

③AQBQQB

ts

s三解题共55分1634+|12020811171DBF23

x2+1

D2x21DCD2A+BFxx

y+1+[xy]

+FFy18

A010B1020C2030DtEtDCCADABADBBEDDEDBCCEECBDEEDDEDBBCCDCEDDABDDCDDEDCE50At10BtCtD40Et40

12

31128100%400100056060319xx+2494x121220

①

②

③

④

⑤117b

2n4n320211

①

②

③

④

⑤1724n+1nn+13n202148085202121COD6OMBOC1AOCDOM

2AOC100DOM503AOC180DOM3

AOBAOB120OM60CODDOC60+4230DOM1AOCAOB90OMCOMMOD6015152AOC12020OMCOMMOD6050503AOCAOBAOB120OM

CODDOC60+α

1112221112224AOC180AOBAOBOM

CODDOC60+22