有理数的乘除法一百道题含答案.doc

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1、七年级数学第二次百题竞赛每小题2分,满分200分 姓名 得分 1. (1) (2) (3) (7.6)0.5 (4) =6 =14 =3.8 =(5) (6) (7) (8) =24 =72 =24 =12 (9) (10) (11) (90.25)9.5 =3 =5 =7(12) (13) 4(2) (14) 0(1000) (15) (1)(2) = =2 =0 =0.5(16) (17) (-9) (18) (6) (5) (4) (3) (19) (9.3)4.4 =3 =54 =360 =40.92(20) 6(7) (21) (22) =7 =22 =2(23) (24) =48

2、=(25) (26) (+48)(+6) = =8(27) (1155)(11)(+3)(5) (28) 375 =7 =375(29) (30)(6)5 (31) = =10 =249(32)(4)7(1)(0.25) (33) (34) =7 = =(35) (36) (37) 1学 =-60 =0 =(38) (39) (40) = =5 = (41) # (42)(+3)(37) =13.34 =4(43) 0(1)(2)(3)(4) (44) (+)( 63) =0 =35(45) (46)(72)(+1) (47) =100 =96 = (48)(+)(48) (49) =16 =

3、2000(50) =2.(1) (4) (7) (2)6 (8) (3) (4)(25) 16 =28 =48 = =400(5) 3 (5)(7) 4 (6)15 (17)(19) (7) =420 =4845 =-2(8) (9) (10) = =18 =0(11) (12) (13) =99 = =10(14) (15)(-6)5 = =10(16) (5)(3)+( 7)(3)+12(3) (17)(2)(5)(2)(5) =0 =1(18) (19) (20) =2 =0.09 =1 (21) (22) (23); = = =8(24) (25) (26) 200(8) =1 =1

4、=25(27)0.25 (28)(29)23 (30)4(9)3 = = =184 =(31)30() (32) (33) (34)(+5)() =36 =13 = =10 (35)(2)(10)(3)(5) (36) = = (37)() (38)(27)9 (39)0.125 =14 =3 =(40)3.75(+4)+( 5.5)+( 6) (41)7(143)(2) (42)36(6) 72(8) =11.75 =154 =15(43)32(2)+(2)(8)2 (44)(3)5+(10.6)3 =30 =2.2(45)(3)(7)()() (46)87+(10.6)(3) =20 =(47)1|0.51|0.252(3) (48) =3 =240(49)(2)(1)0.75 = (50)(2)(10)(3)(5) =

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