解比例(方程)专项练习题
- 1、下载文档前请自行甄别文档内容的完整性,平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益,请联系客服反馈,我们会尽快为您处理(人工客服工作时间:9:00-18:30)。
解比例专项练习题
解比例方法:利用比例的基本性质(外项之积等于内项之积)解答,。
(1)x:8=:
(2):=:X (3)16:x=0.75:(4)(x﹣0.4):8=(5)1.6:x=0.125:0.5 (6):=:x (7)x:1.2=3:4 (8)12:3=:x
(9)=5:3
(10)0.8:4=x:8
(11)16:x=2.4:3
(12):x=:
(14)x:7.5=0.16:1
(15)(4.5﹣x):0.6=(10+x):2
(16)
(17)
(18)=
(19)X:18.5=5:4
(20)8:X=:
(21)0.5:0.25=0.2:X
(22)x:12=:2.8
(23):=x :
(24)=
(25)9:5﹦4.5:x
解比例---- 1
(26):x ﹦:(27)﹦
(28):﹦x:8 (29)x :﹦51:17 (30)﹦:
(31)6:x=4:7 (32)30:x=54:36 (33)2.5:15=:x (34)=
(35):=:x
(36)x:17=
(37)=
(38)1.3:x=5.2:20
(39)x:36=6:18
(40)
(41):=x:9
(42):x=:
(43)x:42=:10
(44)=
(45):x=:6
(46)=
(47):x=:
(48)20:x=:
(49)x:0.4=0.6:0.3
(50)=
(51)8:9=4:x (52)3:4=x:1.2 (53)= (54)=
(55)x :=:(56)
(57)=x :(58)6:x=4.5:1
(59)3:x=:1
(60)0.72:x=9.6:4.8
(61)12:=x:0.5
(62):=
(63)x :=28:
(64)x:6.4=12:8
(65):x=:3
(66)=
(67)
(68)
(69)=8:x
(70)
(71)4:1=x :
(72):3=x:0.7
(73)x:1.8=5:14
(74)=
(74)75:x=2.5:12 (75)0.75:=x :(76)25:7=x:35 (77)514:35=57:x (78)23:x=12:14 (79)x:15=13:56 (80)34:x=54:2 (81)x:0.75=81.25
(82)x :=:4
(83)=
(84):=X:9
(85)0.75:=X :
(86)=
(87)3.6:x=1.8:3
(88)
(89)
(90)8:13=20:x
(91)x:2.5=4:0.5
(92)
(93)
(94)x:36=3:54
(95)0.6:0.8=x:20
(96):x=:12
(97)=
(98)0.7:18=21:x (98)=
(99)1.5:2.5=12:x (100):=:x (101)
=(102)
=(103):=:x (104)(6+x):4=9:5
(105)=
(106)=
(107)4:16=9:x
(108):=x :
(109)=
(110)0.5:x=:
(111)=
(112)=:
(113):=:x
(115)X :=1.25:3
(116)
(117)8:x=1.8:3.6
(118):=6:x
(119)6:=x :
(120)
(121)2:5=X:6 (122):=X :(123)=(124):=:X (125):X=3:12 (126)0.4:0.8=(127):=x :(128):x=3:12 (129)=
(130)2.7:x=54:18
(131):=x :
(132)=,
(133)3:x=9:15,
(134)=
(135):=:x
(136)=x :
(137)0.1:0.5=
(138)1.25:0.25=x:1.6
(139)=0.8:
(140)0.75:X=0.51:3.4
(141)12:20=:X
(142)=
(143):=x:9
(144)4:x=×5
(145):=:x (146)0.5:x=:0.25 (147)=
(148):=:x (149)15:x=0.2:44 (150):=20:x (151)=
(152)40:x=2.5:15 (153)3:8=x:2.4
(154):=x:15
(155):x=6:
(156)8.5:x=4:12
(157)0.1:0.5=
(158):x=:
(159)1.2:3=:x
(160)=
(161)8:30=24:x,
(162):=x :
(163)x :=16:
(164)15:6=10:x
(165):X=:2
(166)=0.8:1.2
(167)=
(168)x:3.25=: