2020-2021學年天津市紅橋區(qū)第一學區(qū)七年級(上)期中數學試卷 解析版

567823222222m567823222222m3n22學年天市紅橋區(qū)一學區(qū)七級（上）中數學試卷一選題本題12小題每小3分，分1|A2B2D1A0B1C1D9680000A10

B10

C

D0.968A3+aB3x

Ca+a3

Dxy+A2B3

C4

DbAna

Bn

Cb

Dam700ABmC2400D200mACa+5bab

BD4baxx

y

+A4B8CD10xabb1k1/12

2222222222222222222222A0B7CDx4+1x12xA2B5CD1112AaAabBa2C1a12D|ba二填題本題共6小題，小分，共分）138140.785615a2.7c1.8bcn

17acb|+|ca18a三解題本題6小題共46分191++26|+÷201xx21+21+2/12

2222222221A2xx+xy13A6B20A6B222ab++bab2330.512.51

2832.682453012m703/12

56785678學年天市紅橋區(qū)一學區(qū)七級（上）中數學試卷參考答案與試題解析一選題本題12小題每小3分，分1|A2B2D1+|1|2A0B1C1D0B1C10D9680000A10

B10

C

D0.9684/12

n62322n623222a96800009.68A3+aB3xa+3D+y23BC33D2xy+A2B3

C4

D+b

4CbAna

Bn

Cb

Da根nbnaAm700ABmC2400D200m＝5/12

222222m3nm32222222m3nm3222222CACa+5bab

BD4ba

B.

C.3bD.3aabDxxm+nA4B8CDmx6xym31+3+110xabb1kA0B7CDab7+0k7x4+1x12xA2B5CD1142x6/12

222222x4x

23xxx31512AaAabBa2C1a12D|baa2ba2bBaabCa212a12bD2a|D二填題本題共6小題，小分，共分7856

0.78560.7915a2.7c1.8bc2.3a2.7b3.21.87/12

2.7+3.2+1.816n5611156+5n15+117ABCac|+|ca2cbcbcacabcbca0abbcaacbac+bca8/12

22222222222222222222222222222222184a2aaa2aaa三解題本題6小題共46分191++2

+2÷23++91+18+41226|+÷96+1+496+1+89/12

22222222222222222222222222222222222222222222222222226201xx21+21+xx+3x152x+622aaa+221A2xx+xy13A6B20A6BA2A2x+321x+362xxyxx+xy16x+9xyx+612x+36+320x234857222ab++bababaaaaa10/

++2330.512.512832.68233|2|1.5||1.5||1||0.5|250.524.524.521.5++2++1++2.