2020-2021學(xué)年人教版七年級(jí)下期末考試數(shù)學(xué)試卷及答案解析

554433511455443351141134學(xué)年七年下期末考數(shù)學(xué)試卷一選題共10小題，分分每題4分a2b3cabcAacBabCbDac232b81bCCD40EA

B130

C

DCEABF40C2901+2130A10

6

B10

C

5

D

20.0006179第1頁(yè)共12頁(yè)

2222222222AC

BDADCA

B

C

DBCD4xy+3xyABCD4xyxy+3xDEBCA12B4C1+3180D1802AC第2頁(yè)共12頁(yè)

4CEFAC1+BC3+CEFCA2cm4cmC12cm13

B3cm5D10cm2+24B9C13D6+410CDEDEADEA40110A30

B35

C60

D70AEC40AEC+EC180+40220AEDA

12

220110ADBADAADEA

12

35A180AED第3頁(yè)共12頁(yè)

2342018242018232018201920192323420182420182320182019201923201820192345201920185222019201920194﹣1142﹣114+212+310+2++21+2+2+2+2+S2+2+2+2+22S1+2+2+2+11+5+5+A5B5

20194

1

D

20184

11+5+5+55+55S

514

C二填題共6小，滿(mǎn)24分，小分aaaaaaa+311m4120.25150.25

5??5

14x15151513第4頁(yè)共12頁(yè)

11CAEBAE301514yxkm/303/h13020/20151+2+135第5頁(yè)共12頁(yè)

22322323342232232334ABC

ABCBDESAS3ABC1+90451+2+90+4516

三解題共9小，滿(mǎn)86分）171a4ab2|√

0

1)2

2b4ab6abc4322|√

0

1)2

36118+334xx第6頁(yè)共12頁(yè)

2243222432x41x1981903

122xx5+15x20

25

20ABCAQ+PQ212abbb第7頁(yè)共12頁(yè)

22222222222222222222a+baab2a4ab+12a22ABDADBEEEFBC1362FECABCC36ABCDADBCBAD90ABC90542BEABCEBCEBC235t1102t34第8頁(yè)共12頁(yè)

883/101250/

18

2434343

7.524ABCBCDBCEDEAED{}170ADE80BAD20{}2DBCB1ACCDE第9頁(yè)共12頁(yè)

{}DBCC2EBAD25CDEDB2ACBAD2512.5CADEB70C70AED80DAEADEAED20BAD180DAE2020102BAD2BxADEBCCAEDADEAEDyyxDAEADEAED2yBAD180DAExx180y2xBADCDE322CDE第10頁(yè)共頁(yè)

221BAD

12

12.5EACADACADEAEDACAC12.52AEDEADEAEDADADECDE12.5ADE+AEDAEDADE++D180ADE+AED