2020-2021学年浙江省杭州市江干区七年级(下)期末数学试卷

学年浙省杭州市干区七年（下）期数学试卷一选题本题10个题每题分共分。每题出四选中只一是合目求()A

B

C

D

y()A

xy

B

xy

C

xy

D

xy)Aa

B(ab

2

)

3

6

C(

2

)

3

6

Da

a

)A

B

Cmx

DmC()

A

B

ABC100CDDD150BCABC6ABFD)

A16cm

B22

C20

D24()A

2

B

x

yxy

C

y

D

xyxy65()AC

666x(1

BD

66(125%)6(1xx//CDPACP40APBAP()AP6030C2090

BP60DP10DE3)①x4D2424

A①②③

B①

C①③

D②二填题本题6个小，小分共分。a

12

2(23(31344

14

15x16xy①2k②k

③④y三解题本题7个小，分。答写文说、明程演步.1713

2xx18):

y)1xy2

x3x19

x)x

x)x

xxx

xxxxx

xxx201234

x/x60808090

5

90100

0.301a23600(90

2121214B3040A30B1AB26CBC75221bS2SS5SSa2S

23AM//BNABNDED122FADEDHG//BE

学年浙省杭州市干区七年（下）期数学试卷参考答案试题解析一选题本题10个题每题分共分。每题出四选中只一是合目求()A

B

C

D

0.00000001By()A

xy

B

xy

C

xy

D

xyAx2Bx7y2123xyyyA)Aa

B(ab

2

)

3

6

C(

2

)

3

6

Da

a

Aa

B(ab

2

)

3

3

6

)3a

a

D)AA

CmxB

DmBm

Cmxm

2

m2

D4()

A

B

ABC100CDDD150A40)B360

120400

108C80D400120))AD少6040120CBCABC6ABFD)

A16cm

B22

C20

D24cmDEFACADCF3ADcmB()A

2

B

x

yxy

C

y

D

xyxyA

2xyxy)yx)4x2x

B

)(2yy)4(2)2(2y)24(x222x

2yx2xyxy65()AC

666x(1

BD

66(125%)6(1xx6xD//CDPACP40APBAP()

AP6030C2090ACP2ACP40//CDACD180180120CAP

BP60DPCABBAPCAPACPP180A6040240ABP6040240B2050140

2B10D3)①xDA124A①②③

B①

C①③

D②CcxEDaEc)a①D62(a)a4

A②24xyx4244a24aa02424③B二填题本题6个小，小分共分。a2)(1(1)(1)a

a(1)(1)

12

2(23(3x3(3

x

01344

x

404

2k2kyx1200120014

70

(1807015x

nx

nx4

2

nx2

nxn．16xy

①

xy

②k

x③

④y

①②③④①

4

422①②k

3y4324

4242y1y②③22

x

xy

3kz，③④x2yyk2k④①③④①③三解题本题7个小，分。答写文说、明程演步.17132xx

1(1

2x

xx

362918):y)1xy2

x3xyxy②2x①

③00②0yy2

x3xx2(x19

x)xx)x

xxx

xxxxx

xxxx)xxxx2)(x(x2)(x

x(x((x2)x(x2)xx

x

201234

x/x60808090

5

90100

0.301a23600(90

0.04500.3618b23600)21480B3040A30B1AB26CBC75xB

30y3020y480

xy

AB2AnC(75)mnn15n(60mnmnmmnn62m22n660n6660626466221b2SS5SSa1

2

SS

)(3)

aa

ab

2(2a)(3a)a1

2

ab

2

Sa22a21

2

2

ab

2

)a

2

ab

2

)

2

a31

2

a

2

2

a

2

S2

2

2

2

2

30320a223AM