2020-2021学年湘教版七年级数学下册期中测试卷

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B

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BababCb

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2019

A

B

C0.75D0.75102mm

mn

A6B5D6二填题共8小，满32分，小分11x+2xyy12x

+3+1xa132

32bn214a1615x16x+61718y

xyzxy三解题共9小，满78分）1981a3

2axy+4yx20812218

1

2a﹣2aba228xxx1x++11

3245n50494822221212212211213245n5049482222121221221121212211221212112122212121222122121112x+

+x

11x12x

++313

+3

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238x1xx2425/130/100/600026a②b27

abax++aax+axca

+acx+acx+c

a+acx+ac+ccax+ax+cbx+a0aca+acac++ax++x+ax+ca

222222222222222222222222

x116231+121xxx33x+1x+5x2x7xy++cyeyf

xyamncf

jk+pk+pje+njd22313++jnx+1x+5xyy+x+92x+7xy5+my

232+3533332232+35333322222参考答案试题解析一选题共10小题，分分每题4分xy95xyD

AD

A

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222020222020xy

yxyxy

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AxBy2.5+30y2.5xxyx2yxxxxyxy50.75

2019

22a2b+1n22a2b+1n3+10nm103232252510102D102mnn26二填题共8小，满32分，小分11x+2y2xx12x﹣ya1+11abab0313222ba

14aaa+4a415xx×x16x

x3x+217①+②24x2①②2z0

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3135+

24a

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4

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11x+x+12x23xx3x9x+8+8x+10

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②12+bb10

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2222x+2xy+42x+718yx24x23+9x2x+9ym93+4398+23m4378

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