2020-2021學(xué)年蘇科版七年級數(shù)學(xué)(下)期末復(fù)習(xí)題30道

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123

3x1xy1yyx2x4x2x3y①x+；②x+

1+1832y+y

22232222222222333322222222322222222223333222222222223

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4y+4++4116ax22y+3+14m1m+41m2+6x+9a+b51+2a10xy12xy3xy

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2bba2a|+|b+1|012x80x3080x60808060a80+80x+x60a+a+b212x10xx203xx2020＝ABCDCG25

NGDHMEDQ131①②①3①②4cb+23a142151

2161②xy③③①3y+12+1y5

y5③x2

217yTxybx4a00b04211ab2Tmnn2①②nmn③nsttsd18

12150191

/ab

+720N9592365121000mm21202022x6x232020502012

QBCABCQBCABC2420211AB2B2801A2A230A3ABB25ABCABC41eq\o\ac(△,A)eq\o\ac(△,)C2CD3PBPABC4Q△△

A26ABCADDEEADEDAEFF12105

27ABCADBCDBCC401CAF228ABFHBD1+2180AC29MOQ90OMOQO1AIBAOBIABO

2AIBAOABMAID①40ADB②ADB30①CD2②ABEFEMFNAEMCFNO3③CDEABEMPNMPAEM102

42334532324238353453412324233453232423835345341232325323320202021100300345222331÷m2t；3yx4+

x234mm2ttttt

3yxxyyxy4+xxx15x120.2540.531m+1m．4+a223

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3x﹣23n3x﹣23nmnm3xxxxx2nn22n244n22224xx12a

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x+x+x1+18342y+y

3

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9+12abb

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6

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b1b1812x80x3080x60x8060aba

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①yx13③②x13x3x③y4

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②nmn③nsttsdT12①n②①m③T212+2b42T12ab82①1xyxyx4Tmn+2402

2②mnn+21146142341120m242m1③cd

d

s2sts0cdc

18

12150xyxmmnx22245n15m150m10

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321191

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232020502012xy20151900x50m3210mxy

502mm5050m+703210m352420211AB2B2801A2A230A3ABBAxAB8280x2a2303BmAmnAB

22QBC22QBCA20B302a10a20a+30a7A3nn12m+30mm+10+2400mn2165n26525ABCABC41eq\o\ac(△,A)eq\o\ac(△,)C2CD3PBPABC4QA△△CC23BP4ABCeq\o\ac(△,A)eq\o\ac(△,)C

23BP426ABCADDEEADEDAEFF12105CADEDADEACCEDFADBACBACCADEADEDA

DEAC2C1053540DEACCBD90904027ABCADBCDBCC401CAF22BAEGAD90BCC40FAHCAFHAC+FAH1002HAC40GABBAC

GHBCADBCGADBAD9060DAEBAD28ABFHBD1+2180ACC1180+180DEDBBAC29MOQ90OMOQ

O1AIBAOBIABO2AIBAOABMAID①40ADB45②ADBIBAIABIBAIAB2①DBADBAD②AADB45DCBA

MBABAO

MBAAOBMNPQAOBABO50AIBAOBIIAB20180+2①M(fèi)BA+90+40AIBAOABM

20

CBAD+D4545②BAD

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