五年级数学(方程)专项练习题及答案汇编

五年级数学(方程)专项练习题及答案汇编(1)3(2x-31)=51(2)10x-5.3=10.7(3)57+x=97(4)56+4x=232(5)4x-12×2=168(6)2.2x+9.8x+0.4=60.4(7)x+4=10(8)3.6x+6.3x-4.5=124.2(9)31x-6×0.3=7.5(10)6x÷9=10(11)6+x=8.2(12)6.7x-2.2x-0.6=53.4(13)1.9x+1.2x+0.6=155.6(14)2x+39×0.3=21.1(15)(13x+9)÷9=14(16)(4.9x-9.4)÷3=18.1(17)7.5x-5.7x+3.2=23(18)7x÷63=2(19)1.2x+2.2×5=26.6(20)5.6x+6.2x=118(21)x-44=15(22)16x-6x-28=52(23)x÷2=4.9(24)2x+59×2=272(25)46x-10x+2.9=56.9(26)2(8x-8)=16(27)26x=7.8(28)9x+13x-33=121(29)18x+8x+11=89(30)98x=196(31)45÷x=3(32)22x+17x-2.9=149.2(33)3x+18=153(34)0.4x÷6=2.6(35)0.3x+1.2=2.7(36)10x+20=40(37)2(0.5x+5.9)=36.8(38)18.3-48x=8.7(39)2x+1.6=7(40)4.9x-1x+0.7=67(41)x÷92=0.2(42)8x-1.5x=39(43)1.6x+9.5x=99.9(44)20x÷5=8(45)1.4x-1.1x=21(46)2(4.6x+0.5)=28.6(47)13.5+6x=33.3(48)123+2x=145(49)19.1-2x=3.3(50)11.8+95x=30.8(51)97-x=85(52)x-5.4=3.4(53)54x=108(54)3.8x-0.5x=26.4(55)5x=105(56)19x+11x=90(57)(9.2x+1)÷11=2.6(58)x+4.2=10.5(59)1.5x-0.7x=6.4(60)0.6x+3.7=13.3(61)6.9x=13.8(62)14x-5x-10=44(63)37x-14x+4.3=59.5(64)141-7x=36(65)187-77x=33(66)3(5x-40)=150(67)2.8x+0.7×2=9.8(68)11x-3x=112(69)1.2x÷6=3(70)32x+15x+1.9=133.5(71)2.7x-0.3×48=4.5(72)6x+8x+26=124(73)(3.1x+9.1)÷20=3.4(74)(8x-32)÷4=6(75)x+31=58(76)9.3+x=13.1(77)2x+2.4×3=23.2(78)x-11=65(79)31-x=24(80)12.1-0.2x=5.7(81)19x+20×0.8=27.4(82)(0.9x+7.1)÷4=3.8(83)x+3.8=11.1(84)9.9x=19.8(85)14x-30×0.3=7.8(86)6.7x-3.9=9.5(87)165-11x=44(88)x-26=67(89)41x+48×0.2=17.8(90)110÷x=2(91)6-1.1x=1.6(92)58x=17.4(93)6.5-6x=2.3(94)x+48=86(95)5.4x+0.7x-2.1=58.9(96)2.1x-3.7=13.1(97)4(2x+19)=100(98)10x+57=227(99)8.2x-5.6x+3.8=11.6(100)16(x-27)=176(101)4(3x-26)=52(102)2x-3.7=10.7(103)17x+4×37=267(104)1.2x+8x+2.6=76.2(105)4x+4.3=19.1(106)2.8x-2.3x=7(107)31x-5×1.1=10(108)x÷9=0.8(109)(x+9)÷9=4(110)70÷x=2(111)189÷x=7(112)28x+36x-2.3=112.9(113)2x-19×6=66(114)4(0.5x+5.9)=45.6(115)19.5-0.2x=14.3(116)4x=5.2(117)2x+3x+18=183(118)x÷14=8(119)0.5x=18.5(120)27x-25x+3.9=7.1(121)2x-9×19=13(122)10x+6x=304(123)3x-59=82(124)11.2÷x=1.4(125)14x+7x=63(126)x-20=47(127)18.6-12x=4.2(128)57x-26x-3.3=12.2(129)2x+5x-23=138(130)5.4+10x=24.4(131)(9x-45)÷9=23(132)0.2x+1.3×14=27(133)3.7x-2.7x-2.3=11.7(134)2.1x+0.3×6=14.4(135)0.3x+5.3x=44.8(136)26x+4x-4.3=103.7(137)(5x-5)÷5=3(138)8x+7x-49=296(139)x+97=163(140)(14x-40)÷46=4(141)14x=112(142)1.3+x=3.6(143)17x÷34=0.3(144)9.9-x=6.1(145)8(0.2x+1.1)=24.8(146)7.7x+3.6x+1.9=47.1(147)13.3+6x=29.5(148)9x-7x-11=25(149)2(12x-29)=134(150)41x=164(151)59x-42x-3=22.5(152)6.7x+6.5x+4.5=96.9(153)(6.5x-9.7)÷4=12.2(154)0.4x-0.4×19=4.4(155)(8.8x-1.4)÷15=4.6(156)7x-3x=40(157)9(4x-29)=171(158)2x+26=46(159)76x=152(160)5.6x+6.6x-0.9=23.5(161)x÷5=20(162)8x=11.2(163)2x+5.7=20.3(164)15.3-0.5x=3.3(165)x+45=69(166)2(2x-12)=96(167)4x+2x-1.2=30.6(168)x+2.1=3.6(169)1.2x-3.1=2.9(170)10x+13x=184(171)33x=19.8(172)x÷6=9(173)164-5x=24(174)12x-49×0.2=9.4(175)12.3+3x=30.9(176)9(5x+5)=180(177)2x+11=109(178)83-x=75(179)116+3x=137(180)0.6x-3=7.2(181)x÷5=3.6(182)3.6x-0.9×11=8.1(183)1x=9(184)x÷88=0.2(185)(5.1x+9.6)÷6=6.7(186)9.5-x=2.3(187)3(10x+17)=111(188)8.2-x=4.9(189)26x-5x+1.8=8.1(190)9x-7x+38=72(191)18x=19.8(192)2(9x+31)=170(193)14x+4x-33=201(194)x-61=38(195)2x+2=13.2(196)3(2.8x+3.4)=27(197)7x-2x+24=134(198)10(0.8x-8.4)=36(199)(7.7x+2.4)÷4=23.7(200)(2.5x+5.9)÷3=17.8(201)5.7-x=5.2(202)27x-23x-2=5.2(203)1.1x+5.2=20.6(204)6x+8×7=146(205)8.8+11x=22(206)76÷x=19(207)1.8x-1.4x-1=1.4(208)10x-4x+9=27(209)24x-1.5=10.5(210)6(0.4x-7.1)=7.8(211)8.2+x=15.9(212)130+27x=211(213)4.2+41x=12.4(214)5(1.8x+4.4)=49(215)0.2x=15.4(216)4(3.4x-0.9)=23.6(217)0.3x+1.9×6=12.6(218)11x-5x+19=109(219)2x-31×4=58(220)3x-21×4=39(221)82+x=147(222)15.2+58x=32.6(223)2.1x÷3=4.2(224)x÷21=5(225)0.6x-2.6×4=6.4(226)120÷x=4(227)(4.8x+4)÷8=1.7(228)x+22=119(229)5x÷9=10(230)x+3.6=8.3(231)192÷x=16(232)14x-6x-8=48(233)15x÷5=9(234)22x+4.4=13.2(235)2x÷7=0.4(236)3.1x+2.2x=58.3(237)5x-3x+38=66(238)7.6x+0.8x-2.5=56.3(239)28x-7×19=35(240)6x+14x=100(241)3.5x-2.5x+2.7=16.7(242)24x+44×0.2=18.4(243)9-x=1.4(244)4.5x-0.9x+4.1=25.7(245)x÷40=2(246)0.6x-0.4×9=9(247)3.8x+3.5x-1.6=151.7(248)0.7x-0.9×8=12.4(249)x+7.4=8.2(250)8.9x-6x-1.7=27.3(251)3x=195(252)55x+31x+2.3=19.5(253)7.2x÷16=0.9(254)(13x-20)÷15=16(255)18x÷36=5(256)4.7x+0.4×49=29(257)20x÷36=0.5(258)x÷18=0.4(259)2x+12x-1=55(260)65x-39x-4.1=14.1(261)24x+22×6=300(262)23x-6x-4.8=24.1(263)1.7x-1.8=13.5(264)2.9x-5.7=3(265)65x+5.6=25.1(266)24x-52=68(267)4.1+x=9.8(268)51x-18x+1.8=11.7(269)17x-4x=91(270)138+2x=284(271)x÷7=2.6(272)6(2.3x-9.9)=23.4(273)0.4x+0.8x+3.5=49.1(274)3x-7×8=13(275)2x÷18=9(276)0.3x÷90=0.2(277)29x+21x-1.5=153.5(278)6.1x+5.5x=116(279)6x+13x-3.1=107.1(280)17.5+0.2x=35.3(281)1.1x-0.2×15=6.9(282)18x-2×51=42(283)4(3x+3)=192(284)10x+2x+3=147(285)2(2.2x+5.7)=46.6(286)2.3x-0.2×18=7.9(287)0.9x+7.1x-2.9=21.1(288)2(5x+6.4)=42.8(289)83-x=47(290)8.2+0.2x=26.4(291)x+49=61(292)1.1x+8.6x+3.8=100.8(293)2.8x-2.2x-2.2=5.6(294)5(2x-33)=125(295)16x+12×3=148(296)12÷x=3(297)3x-5×0.3=12.9(298)3+x=11.9(299)7.8x-2.8x-3.7=51.3(300)x-0.4=2.3(301)5x+3×2.3=19.9(302)(8x+19)÷27=9(303)2x+5x-29=48(304)17.2+4.8x=26.8(305)18x+1=6.4(306)9.8x+9x=37.6(307)14x-13×0.4=8.8(308)(5.3x-5)÷8=6(309)0.2x+1.1=12.5(310)(0.9x+5.4)÷4=4.5(311)(9x-23)÷2=101(312)35x-23x-1.1=32.5(313)5.1-x=4.1(314)6x÷3=2.6(315)0.2x÷12=0.4(316)47+x=100(317)x-5=4.8(318)117+42x=201(319)(10x+49)÷17=7(320)55x+61x+0.3=162.7(321)62+x=86(322)8.2x=16.4(323)10-2x=8.6(324)0.2x÷20=0.3(325)x-8=1.1(326)0.8÷x=0.4(327)8.3-0.8x=4.3(328)2.5x+4.7x+0.9=51.3(329)3.6x-0.9×7=8.1(330)6.2÷x=3.1(331)(14x-12)÷2=8(332)8.5+0.6x=11.5(333)4x=2(334)2(6x+31)=182(335)3(0.9x-9.8)=43.5(336)50x-35=115(337)14.4+0.3x=30(338)(4x-20)÷20=1(339)81x÷9=1.8(340)5x-0.8x-4.5=66.9(341)5x-47=93(342)x-4.8=2.9(343)109+2x=241(344)x÷10=1.3(345)5.5-x=1.4(346)12.6÷x=2.1(347)6.6÷x=0.6(348)8x-3x-33=72(349)4(0.9x+1.4)=12.8(350)36x+47×0.2=27.4(351)7.2+5.6x=18.4(352)3.5x-1.5x+0.7=48.7(353)2(x+27)=88(354)3.1x-1.3x+0.2=3.8(355)(6x-8)÷2=41(356)2x+13×12=296(357)x+7.2=7.5(358)11x+5x+2.3=50.3(359)2.9+0.5x=14.4(360)195-4x=91(361)94x-72x+2=19.6(362)66-x=48(363)1.9x+5.5=11.2(364)19x+13x-22=106(365)x+2.5=3.5(366)14x+4×2=190(367)18x+5x+43=227(368)10.5-2.2x=6.1(369)18x-7x=121(370)6.4x-3.6x-1.3=29.5(371)122-38x=46(372)7.7x-0.8x=75.9(373)(8x+24)÷5=48(374)1.8x÷16=0.9(375)27x+17x+4.2=57(376)5+x=33(377)7.4x+6.2x-3.4=23.8(378)4.4x-1.5x=29(379)2x+12=110(380)4(3.1x-2.9)=25.6(381)4(2x-9)=68(382)12x-4x=48(383)7x+5x=24(384)4x+10x=266(385)x+86=142(386)8x÷4=4.6(387)34x+6x+3.1=111.1(388)24x-6x-1.2=67.2(389)x-3.4=5.9(390)2x-38=14(391)1.9x+0.9×16=22(392)x+6.9=8.1(393)5x-3.7x=6.5(394)10x÷3=4(395)(x+38)÷3=19(396)26x+27x-1.7=30.1(397)86-x=44(398)32x-48=112(399)5x+2x=161(400)3.7x+6x-2.6=94.4(401)14x+22x+3.2=60.8(402)3x-16=89(403)5x=14.5(404)3.4x-0.4x+2.9=80.9(405)1.2x=19.2(406)(7.8x-4.8)÷2=9.3(407)30÷x=3(408)6x-15×0.9=5.1(409)12x-7x-15=35(410)7.8x-4.2x=18(411)0.9x-0.7x-2.2=3.2(412)19x+42=156(413)13x+18x-0.8=138.7(414)(1.3x-1.9)÷14=0.7(415)3x+46=61(416)2x-3.2=15.2(417)10x+8x-45=63(418)23x÷46=0.2(419)2x÷27=4(420)38x+35=149(421)0.5+x=5.3(422)14.6+2.8x=23(423)5x=6(424)0.8x=20(425)x-1.6=5.1(426)186-33x=54(427)6x-2x=88(428)14x+7x+22=190(429)2x-5.1=3.3(430)90+x=121(431)16x-7x-28=44(432)82x-54x-3.2=19.2(433)13-0.5x=2(434)9x-3x=24(435)85-x=53(436)13x+18x+4.3=19.8(437)3x+15×6=198(438)4(x+42)=176(439)3.9x+4.4=20(440)2x-4.1=8.7(441)15x-9x+6=48(442)22x-5×9=153(443)3x+16×3=123(444)(11x+32)÷14=18(445)x÷12=14(446)x+26=49(447)15.9-3x=11.7(448)1x+1.6=7.6(449)6.4-5x=3.9(450)1.4x+0.9x=115(451)x÷37=3(452)56x-44x+3.8=19.4(453)97-x=26(454)20x-1=9(455)15x-8x=77(456)(5.4x-7.9)÷5=15.7(457)x÷8=10(458)4.3x+0.4×36=27.3(459)2.2x-1.9x+2=11.6(460)20÷x=10(461)89x-37x-1.7=19.1(462)95-x=66(463)6x+4.7x=160.5(464)16.2-2x=8.2(465)5.2-x=2.2(466)83x-3x+4.8=44.8(467)50+95x=240(468)x-4=66(469)72+37x=220(470)3.2+x=10.5(471)8.5+1.8x=17.5(472)21+x=38(473)0.3x-1.8=9.3(474)3.2x+3x+1.7=32.7(475)8.4÷x=4.2(476)x-66=14(477)x÷11=1.1(478)19x+16×1=21.7(479)0.3x+4=10.3(480)10.8÷x=1.8(481)4(8x+8)=160(482)6.8-x=4(483)16.1-10x=2.1(484)3.5x+1.2=15.2(485)17x-12x+3=58(486)6x+4×2.4=25.2(487)x+7.8=9.6(488)165-35x=95(489)2+x=92(490)16x-11x+5=55(491)x-68=27(492)8.1-2x=5.3(493)0.9x-4.8=8.7(494)16.5-0.4x=15.7(495)9.6x+0.2x=98(496)5x+2x+4=277(497)4.5x-5.1=3.9(498)9x-5x-39=33(499)(3.6x+7.5)÷5=12.3(500)x÷4=8(501)6x-4x-27=29(502)46+x=129(503)x-56=24(504)2(3.1x-1.5)=40.4(505)40x-17×0.4=9.2(506)16x+14x+41=101(507)2(0.8x-8.5)=7(508)15x+5x=80(509)15x-3×1.3=9.6(510)48x+18×0.6=30(511)(x+46)÷8=8(512)7x-2x=120(513)x-4.7=5(514)(18x-36)÷9=24(515)15+9x=27.6(516)4x-4.4=5.6(517)2x+3=10.8(518)(2x+48)÷2=29(519)12x+6x-3=159(520)(5x-2.1)÷27=2.7(521)5x=20(522)80x+62x+2.7=173.1(523)6.8÷x=0.4(524)39x=156(525)12x-1.9=4.1(526)28x-52=60(527)2x+6x+8=168(528)5x-3x+23=35(529)10x-31=49(530)x-2.2=2.6(531)8x=64(532)77x÷14=11(533)17x+2x-17=97(534)56x-6x+3.1=38.1(535)2.2x÷77=0.2(536)1.9x+2.2x-4.7=28.1(537)115-5x=10(538)16x÷56=0.2(539)3.1+x=10.7(540)18x+2.1=21.9参考答案(1)x=24(2)x=1.6(3)x=40(4)x=44(5)x=48(6)x=5(7)x=6(8)x=13(9)x=0.3(10)x=15(11)x=2.2(12)x=12(13)x=50(14)x=4.7(15)x=9(16)x=13(17)x=11(18)x=18(19)x=13(20)x=10(21)x=59(22)x=8(23)x=9.8(24)x=77(25)x=1.5(26)x=2(27)x=0.3(28)x=7(29)x=3(30)x=2(31)x=15(32)x=3.9(33)x=45(34)x=39(35)x=5(36)x=2(37)x=25(38)x=0.2(39)x=2.7(40)x=17(41)x=18.4(42)x=6(43)x=9(44)x=2(45)x=70(46)x=3(47)x=3.3(48)x=11(49)x=7.9(50)x=0.2(51)x=12(52)x=8.8(53)x=2(54)x=8(55)x=21(56)x=3(57)x=3(58)x=6.3(59)x=8(60)x=16(61)x=2(62)x=6(63)x=2.4(64)x=15(65)x=2(66)x=18(67)x=3(68)x=14(69)x=15(70)x=2.8(71)x=7(72)x=7(73)x=19(74)x=7(75)x=27(76)x=3.8(77)x=8(78)x=76(79)x=7(80)x=32(81)x=0.6(82)x=9(83)x=7.3(84)x=2(85)x=1.2(86)x=2(87)x=11(88)x=93(89)x=0.2(90)x=55(91)x=4(92)x=0.3(93)x=0.7(94)x=38(95)x=10(96)x=8(97)x=3(98)x=17(99)x=3(100)x=38(101)x=13(102)x=7.2(103)x=7(104)x=8(105)x=3.7(106)x=14(107)x=0.5(108)x=7.2(109)x=27(110)x=35(111)x=27(112)x=1.8(113)x=90(114)x=11(115)x=26(116)x=1.3(117)x=33(118)x=112(119)x=37(120)x=1.6(121)x=92(122)x=19(123)x=47(124)x=8(125)x=3(126)x=67(127)x=1.2(128)x=0.5(129)x=23(130)x=1.9(131)x=28(132)x=44(133)x=14(134)x=6(135)x=8(136)x=3.6(137)x=4(138)x=23(139)x=66(140)x=16(141)x=8(142)x=2.3(143)x=0.6(144)x=3.8(145)x=10(146)x=4(147)x=2.7(148)x=18(149)x=8(150)x=4(151)x=1.5(152)x=7(153)x=9(154)x=30(155)x=8(156)x=10(157)x=12(158)x=10(159)x=2(160)x=2(161)x=100(162)x=1.4(163)x=7.3(164)x=24(165)x=24(166)x=30(167)x=5.3(168)x=1.5(169)x=5(170)x=8(171)x=0.6(172)x=54(173)x=28(174)x=1.6(175)x=6.2(176)x=3(177)x=49(178)x=8(179)x=7(180)x=17(181)x=18(182)x=5(183)x=9(184)x=17.6(185)x=6(186)x=7.2(187)x=2(188)x=3.3(189)x=0.3(190)x=17(191)x=1.1(192)x=6(193)x=13(194)x=99(195)x=5.6(196)x=2(197)x=22(198)x=15(199)x=12(200)x=19(201)x=0.5(202)x=1.8(203)x=14(204)x=15(205)x=1.2(206)x=4(207)x=6(208)x=3(209)x=0.5(210)x=21(211)x=7.7(212)x=3(213)x=0.2(214)x=3(215)x=77(216)x=2(217)x=4(218)x=15(219)x=91(220)x=41(221)x=65(222)x=0.3(223)x=6(224)x=105(225)x=28(226)x=30(227)x=2(228)x=97(229)x=18(230)x=4.7(231)x=12(232)x=7(233)x=3(234)x=0.4(235)x=1.4(236)x=11(237)x=14(238)x=7(239)x=6(240)x=5(241)x=14(242)x=0.4(243)x=7.6(244)x=6(245)x=80(246)x=21(247)x=21(248)x=28(249)x=0.8(250)x=10(251)x=65(252)x=0.2(253)x=2(254)x=20(255)x=10(256)x=2(257)x=0.9(258)x=7.2(259)x=4(260)x=0.7(261)x=7(262)x=1.7(263)x=9(264)x=3(265)x=0.3(266)x=5(267)x=5.7(268)x=0.3(269)x=7(270)x=73(271)x=18.2(272)x=6(273)x=38(274)x=23(275)x=81(276)x=60(277)x=3.1(278)x=10(279)x=5.8(280)x=89(281)x=9(282)x=8(283)x=15(284)x=12(285)x=8(286)x=5(287)x=3(288)x=3(289)x=36(290)x=91(291)x=12(292)x=10(293)x=13(294)x=29(295)x=7(296)x=4(297)x=4.8(298)x=8.9(299)x=11(300)x=2.7(301)x=2.6(302)x=28(303)x=11(304)x=2(305)x=0.3(306)x=2(307)x=1(308)x=10(309)x=57(310)x=14(311)x=25(312)x=2.8(313)x=1(314)x=1.3(315)x=24(316)x=53(317)x=9.8(318)x=2(319)x=7(320)x=1.4(321)x=24(322)x=2(323)x=0.7(324)x=30(325)x=9.1(326)x=2(327)x=5(328)x=7(329)x=4(330)x=2(331)x=2(332)x=5(333)x=0.5(334)x=10(335)x=27(336)x=3(337)x=52(338)x=10(339)x=0.2(340)x=17(341)x=28(342)x=7.7(343)x=66(344)x=13(345)x=4.1(346)x=6(347)x=11(348)x=21(349)x=2(350)x=0.5(351)x=2(352)x=24(353)x=17(354)x=2(355)x=15(356)x=70(357)x=0.3(358)x=3(359)x=23(360)x=26(361)x=0.8(362)x=18(363)x=3(364)x=4(365)x=1(366)x=13(367)x=8(368)x=2(369)x=11(370)x=11(371)x=2(372)x=11(373)x=27(374)x=8(375)x=1.2(376)x=28(377)x=2(378)x=10(379)x=49(380)x=3(381)x=13(382)x=6(383)x=2(384)x=19(385)x=56(386)x=2.3(387)x=2.7(388)x=3.8(389)x=9.3(390)x=26(391)x=4(392)x=1.2(393)x=5(394)x=1.2(39