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-2.9x=2.4(2)(14x+14)÷2=77(3)13x+6x+12=221(4)6.4x-5.1x+1.7=9.5(5)72-x=42(6)12.5-0.4x=9.3(7)54÷x=27(8)1.2x-4.2=13.8(9)2.6÷x=0.2(10)3x+4x=301(11)x+35=86(12)81÷x=9(13)(x-7.2)÷16=0.3(14)1.5x+5.2=17.2(15)33x÷3=4.4(16)3(1.2x+4.5)=38.7(17)2(1.3x+2.3)=22.8(18)70x-40x-1.5=34.5(19)6(5.5x-8.6)=47.4(20)8x-4x=60(21)3(4.9x+6.1)=47.7(22)48+3x=192(23)2(4x-33)=166(24)4.7x+6.9x-2.2=90.6(25)17(0.5x-9.5)=42.5(26)2x+10×0.5=7.2(27)4.9x-1.8x+4=16.4(28)36x=7.2(29)20x-9×5=15(30)3x+17x+34=74(31)(11x-15)÷34=7(32)7.5x+2.6x+4.9=35.2(33)13x-6x=21(34)7.1x+7.6x=44.1(35)0.6x-4×2=8.2(36)2.4÷x=0.3(37)3x+15×2=60(38)x-17=50(39)(2x+20)÷8=4(40)86+x=124(41)0.7x+0.3×32=11.7(42)98x+38x-1.1=94.1(43)6.7+0.3x=7.9(44)34x-3x-0.5=67.7(45)20x÷4=1.5(46)7.3+x=9.8(47)13.1-12x=4.7(48)x+1.6=9.2(49)5(x-12)=170(50)0.9x-0.3x=49.2(51)2.7÷x=0.3(52)0.6x÷3=3.2(53)12x÷30=0.4(54)x+6.2=15.3(55)9.4x-7.8x=14.4(56)3.4x-2.9x-3.9=7.1(57)3x+48=153(58)6x=150(59)33x-13x-1.7=2.3(60)(4.3x-1.1)÷19=1.3(61)(8x-3)÷21=9(62)2(2.3x+5.9)=34.8(63)x+6.6=11.8(64)6x+13×4=148(65)3.9x-3.7x=4.2(66)3x=12(67)3x+6x+18=171(68)12x-5x=14(69)49x+25x+1.3=38.3(70)2x+2.9=12.5(71)0.4x+4.5=9.3(72)5+x=8.2(73)6x-4×1.3=8(74)17x+4.9=16.8(75)(6x-28)÷49=2(76)85x-36x+3.5=13.3(77)x-0.3=4.9(78)182+19x=315(79)6(x+9)=144(80)8.5x+6.8x=30.6(81)8x÷48=3(82)x÷5=14(83)3(x+5)=96(84)(6.8x-1.4)÷33=1.4(85)0.7x-1.8×3=1.6(86)13x-4x-1=28.7(87)x÷6=0.6(88)32x-21x+4.5=38.6(89)11x+32=76(90)2(17x-30)=110(91)(6x-48)÷2=18(92)4x-0.8×3=13.6(93)60x÷20=9(94)0.2x-5=6(95)3x+5.8x+0.7=123.9(96)45x-38x+0.3=7.3(97)5x+2x-49=147(98)x-2=59(99)2.4x=19.2(100)16x+4x-11=209(101)4(0.2x+6.3)=34(102)2x-55=139(103)4x+7.1x-4.5=17.7(104)2x+25×0.4=18.8(105)x÷3=1.6(106)98x+5.7=25.3(107)66x=13.2(108)35x=105(109)6.7+0.4x=20.7(110)2x÷4=4.1(111)0.2x+1=12.6(112)92÷x=46(113)13x+15=171(114)13x+9x-4=326(115)4.8x-2.9=11.5(116)(0.5x+0.7)÷24=0.3(117)6x+6.5x+2.1=114.6(118)x+6.3=12.7(119)3.8x-0.9x+1.3=36.1(120)18.2-3x=3.5(121)47x-8x-3=71.1(122)28x=140(123)2x=4(124)x+8.2=15.3(125)1.6x+5.4=11.8(126)(3.3x+7)÷19=2.8(127)5(4.6x-8.4)=50(128)(2.8x+9.2)÷2=29.8(129)2x-17×3=51(130)x+5.6=9.2(131)87+2x=187(132)155+15x=230(133)x÷5=1.4(134)8x-6×9=34(135)9x=7.2(136)0.8x=11.2(137)19x=152(138)6.2x-1.9x=51.6(139)2(4x-44)=40(140)1.7x+0.6×5=18.3(141)2(4x-22)=76(142)4.3x+0.4x+1.9=11.3(143)11(7x-32)=187(144)15.8-4x=6.2(145)43x+73x+2.3=25.5(146)2.3x+3.4x-2.4=100.2(147)0.2x÷8=1.5(148)3x+8×22=353(149)22x=17.6(150)26(0.4x-4.9)=28.6(151)5.2x+7.5x-0.7=24.7(152)17x+12x+14=333(153)(1.7x+1.5)÷20=0.5(154)4.2x-0.5x+1.6=53.4(155)96x=192(156)x-25=49(157)31x+32x+3.8=148.7(158)x-37=53(159)68+x=139(160)1.3x-0.6x-2.5=46.5(161)58x+35x+4.3=32.2(162)2x-12×3=80(163)x-1.1=3.2(164)19x-9x=40(165)x-3=49(166)x-2.5=2.8(167)50x-2x+1=97(168)3x+10=97(169)7.3+2.1x=24.1(170)113-3x=86(171)0.5x=2.5(172)4.2+2x=19(173)2x-2×32=100(174)2.7-x=2.3(175)6x-44=124(176)9x+17x-5=177(177)11x-32=89(178)(11x+45)÷5=20(179)(x+7)÷4=5(180)12x-4.8=13.2(181)0.6x=17.4(182)17x-7x=80(183)198-6x=30(184)2x+4x+46=154(185)21x÷42=2(186)x-38=40(187)(0.2x-0.3)÷11=0.1(188)3(8x+6)=186(189)24x-34×0.2=12.4(190)14.5+0.2x=14.9(191)9.1x-5.9x=12.8(192)x+2.3=9.1(193)75+x=144(194)18.2-0.2x=12(195)5.9-x=1.1(196)x-37=16(197)17x+3x+19=239(198)0.5x-4.1=12.9(199)1.8x÷27=0.4(200)63x+14x-4.7=87.7(201)19.9-2x=14.3(202)0.8x+1.2x+2.7=106.7(203)(14x-12)÷8=9(204)5.5x=11(205)41x-17x+2.5=28.9(206)32x-43×0.3=6.3(207)0.4x+0.9x+3=81(208)x-18=56(209)8x-1.1=14.9(210)2(0.4x+5.3)=21(211)8x÷3=40(212)3x+64×2=188(213)1.3x+0.2×12=8.9(214)19x-10x-21=42(215)x÷8=11(216)3(x+18)=159(217)0.8x-1.2=10.8(218)4x+11×0.2=5.4(219)177+3x=291(220)x÷5=0.9(221)2.2x+2.8x-2.3=47.7(222)28x+3x+2.8=24.5(223)3x-4×0.9=10.8(224)2x+54=70(225)20x+2×90=240(226)90x-27x+4.3=29.5(227)0.4x+2.2=10.6(228)14x=140(229)15x-4x+38=115(230)2(4.4x-2.9)=29.4(231)4x+3.5x=67.5(232)4x-2.8x+3.5=7.1(233)3.5+x=3.7(234)2x÷40=4(235)2(x+32)=74(236)8.9-x=7.9(237)(12x-26)÷13=10(238)x-1.4=6.4(239)2x-49=131(240)x÷2=43(241)18x+4×3.8=35(242)1x+6x=105(243)9x-7x+29=59(244)4.4x-0.9×5=13.1(245)18x+15x=165(246)14x-3x+0.2=26.6(247)16x+54x+1.3=71.3(248)6.6x-4.3x-3.5=28.7(249)2x+3×24=254(250)1+x=2.8(251)x+35=43(252)12x-9x-26=22(253)17x-51=102(254)6x-17×0.5=9.5(255)97x+14=208(256)8x+5×1.6=16.8(257)3x-1.9=14.9(258)8x+9x-15=223(259)1.7+x=11(260)6x+46=190(261)5x-12×0.3=6.9(262)x÷5=31(263)83x+32x-3.2=65.8(264)(3x+2)÷4=11(265)x-7.7=2.2(266)2(x-13)=44(267)x÷22=0.2(268)1.6x÷5=3.2(269)60-x=41(270)8.1-x=1.3(271)91-x=87(272)80x-2.2=13.8(273)57x+1.1=12.5(274)6.8-2x=2.8(275)17.9-0.2x=15.1(276)141-9x=114(277)13.2+6x=28.8(278)16x+17x=297(279)9.3x÷6=3.1(280)61-x=25(281)22x=4.4(282)17.3-0.2x=7.5(283)10x+16x+8=112(284)6.5+x=14.7(285)18.4+2x=19.8(286)2.2x+4.9x+1=15.2(287)2.3x+3.4x=96.9(288)60x+47x-4.9=80.7(289)9.9+17x=26.9(290)1.5x+4.3x=69.6(291)78-x=63(292)5.6+48x=15.2(293)2.4x+3x-3.4=104.6(294)5.8+0.5x=19.3(295)6x-2×4=4(296)x+1.4=10.1(297)9.8x-8.2x=3.2(298)41x+83x-4.2=107.4(299)3x-58=98(300)9.8x-5.1x-4.6=14.2(301)65-x=52(302)12x-5x+49=63(303)6x=16.8(304)x÷7=21(305)72-6x=30(306)(2.8x-1.2)÷6=8.2(307)16+10x=36(308)10x-3x=42(309)93x+82x-3.9=101.1(310)10x-5x+17=87(311)(9.9x-4.8)÷3=14.9(312)46x-4.2=14.2(313)7÷x=1.4(314)8.6-x=5.5(315)18.8-4x=1.2(316)0.5x+4.7=15.2(317)11.1-0.2x=8.9(318)0.2x+1.9=11.9(319)x÷8=0.6(320)7.8-x=1.2(321)1.3x+2.2×6=15.8(322)7.2-x=6.7(323)x÷27=7(324)18.2+2.4x=27.8(325)182÷x=14(326)1.2x-2.4=1.2(327)7.2÷x=0.3(328)27x+4×36=279(329)x+3=88(330)57+x=78(331)63x+5=17.6(332)4x-5×28=40(333)6x+2×43=200(334)3x+4x=273(335)25x=200(336)14x+17x+45=386(337)10x+8x=324(338)0.7x-0.2×12=4.6(339)3.8x+4.8x-2.3=32.1(340)17x-4x-29=10(341)54+4x=70(342)0.4x-0.2x+0.5=16.7(343)7.2x=14.4(344)19.5-13x=10.4(345)44x-4x+2=34(346)4x÷16=0.9(347)16x-6x-43=37(348)18x+2x-42=18(349)9x+30x+4.6=67(350)1x+1×13=25(351)5x-49×0.2=2.2(352)7÷x=0.5(353)16x-3x+7=150(354)18x÷4=45(355)x÷2=3.4(356)8(2x-2)=80(357)36x+16×0.6=27.6(358)0.7x-0.4×32=2.6(359)7.3x-5.1x-0.3=4.1(360)77-x=55(361)9÷x=0.9(362)0.4x-1.9=11.3(363)2x+17x+2.7=112.9(364)14x-3×15=95(365)(18x+40)÷14=17(366)39+x=120(367)x+5=96(368)9.5÷x=0.5(369)1.8x÷10=0.9(370)(7x+37)÷16=8(371)24x+4.8=12(372)9.9x+7.9x=178(373)18x-9x-9=54(374)3x+7x+48=138(375)(0.9x-7.4)÷22=0.4(376)7x+1x+4.5=76.5(377)2.7x-2=3.4(378)6x-4x=46(379)19x+11x-40=200(380)14x-4x-2=62(381)2.6x÷13=1.4(382)40-x=35(383)9x-4x+7=92(384)4.1x-1×4=8.3(385)x÷2=45(386)19.4+1.4x=36.2(387)10x+2x-2.4=56.4(388)16+x=39(389)120÷x=40(390)6.2x-1.6x-1.6=67.4(391)(4x+7.4)÷2=27.7(392)14x+4.7=22.9(393)120÷x=24(394)163+17x=231(395)1.8x-0.5x=67.6(396)8.5x-5x-1.2=23.3(397)56x+31x-3.1=14.3(398)50x-27x-2.3=43.7(399)8+0.6x=14.6(400)5x+14x=190(401)60x-1.2=10.8(402)3+x=25(403)2x+1.5=9.3(404)2x+0.9×11=19.9(405)9.7-x=4.4(406)3.8x-2.2x=27.2(407)16.3-6x=3.1(408)17.1+32x=29.9(409)(2.7x-0.9)÷8=0.9(410)187-5x=172(411)198÷x=33(412)8x-3×45=65(413)(1.6x+4.6)÷18=1.5(414)3x÷2=36(415)5.6x+7.6x=171.6(416)2.3x-1.5x+3.4=7.4(417)0.6x=19.2(418)13.8-0.3x=9.3(419)5.6x-4x-1.6=9.6(420)5x+3x-21=35(421)2(x+21)=102(422)x+62=157(423)2x=1.4(424)5x+24x-2.2=102.2(425)18x-5x+27=66(426)x÷34=0.5(427)10.7-0.5x=7.2(428)6x-3x=81(429)13x+15x=336(430)6.5x-1.6x-1.3=72.2(431)2x+35=91(432)6.4x+6.3x=63.5(433)x÷38=3(434)15.4-0.3x=11.2(435)6x+4x=30(436)8.6+x=16.9(437)0.6x÷12=1.4(438)(13x+2)÷2=131(439)x-4.3=1.5(440)2x+26×7=252(441)4.9x-1.9x+0.6=42.6(442)13x-2x=44(443)129+26x=285(444)4.8+6x=6(445)13.3-43x=4.7(446)26(0.6x-7.6)=36.4(447)90x÷5=36(448)2(4x-2)=172(449)2.4x÷21=0.8(450)154-13x=89(451)135÷x=9(452)0.5x+1.5×5=19.5(453)3.6x-1.4×4=5.2(454)12x-10x-4=12(455)10x-6x-15=45(456)174÷x=3(457)94x=188(458)5x-11×0.3=10.2(459)2x-38=52(460)x÷5=4(461)x+36=45(462)(17x-4)÷5=40(463)57x÷6=1.9(464)x+11=59(465)(3x-24)÷4=6(466)4(0.6x+0.8)=48.8(467)(5.3x-3.4)÷9=0.8(468)123-9x=87(469)2x-51=21(470)2(4x+22)=188(471)5.2÷x=0.2(472)33x+1.9=21.7(473)2.3x-4.2=5(474)19-25x=6.5(475)x+4.7=13.9(476)8.3x-1.2x+4.1=60.9(477)x-3.2=4.3(478)3(1.6x+2)=44.4(479)18x=126(480)39x+3×0.8=14.1(481)41x+5×2.5=24.8(482)4.6x=13.8(483)80x÷16=10(484)5x+3×2.8=21.9(485)2.2+x=5.2(486)16.4+67x=29.8(487)2.7x+4x-2.6=131.4(488)12x-2x+4=64(489)x+34=132(490)4x-25=159(491)0.8x+7.5x+2.9=110.8(492)(2.5x+7.2)÷31=1.2(493)72x-2x+2.4=23.4(494)(7.9x+5.5)÷18=2.5(495)3(7x+29)=192(496)7x-1.2=13.5(497)20x=8(498)19x÷38=0.3(499)2.9+x=9.6(500)5.1+4.4x=22.7(501)x÷2=1.6(502)62x+66x+3.9=80.7(503)70x-23x-4.9=23.3(504)52-2x=40(505)10x-8x+12=30(506)3(0.4x-9.1)=14.7(507)2.1x+2.4=10.8(508)2(0.6x+4.4)=28(509)x-0.3=1.9(510)x+5=34(511)4x+15x-14=195(512)6x-2×70=10(513)0.8x+1.8×4=15.2(514)44x+24=156(515)41x-29x-1.7=13.9(516)2.1x-3.5×2=5.6(517)2.2x+3.1x-0.8=110.5(518)163-17x=95(519)(19x+20)÷12=8(520)5x÷10=0.6(521)86+x=174(522)0.3x+3.6=7.8(523)x-53=29(524)x-1.3=1.9(525)12x-2x-38=122(526)(13x+33)÷15=10(527)4(x+20)=200(528)2(1.1x-7.8)=37.2(529)(6x-4)÷10=11(530)9.8-x=8.2(531)18x-10x-28=28(532)3.5+60x=21.5(533)56x-5.7=11.1(534)8(1.3x-6.1)=44.8(535)38-x=29(536)33x-3.6=3(537)1.2x+0.4×29=24.8(538)52x÷39=0.4(539)33+x=50(540)10x+5x=90参考答案(1)x=8(2)x=10(3)x=11(4)x=6(5)x=30(6)x=8(7)x=2(8)x=15(9)x=13(10)x=43(11)x=51(12)x=9(13)x=12(14)x=8(15)x=0.4(16)x=7(17)x=7(18)x=1.2(19)x=3(20)x=15(21)x=2(22)x=48(23)x=29(24)x=8(25)x=24(26)x=1.1(27)x=4(28)x=0.2(29)x=3(30)x=2(31)x=23(32)x=3(33)x=3(34)x=3(35)x=27(36)x=8(37)x=10(38)x=67(39)x=6(40)x=38(41)x=3(42)x=0.7(43)x=4(44)x=2.2(45)x=0.3(46)x=2.5(47)x=0.7(48)x=7.6(49)x=46(50)x=82(51)x=9(52)x=16(53)x=1(54)x=9.1(55)x=9(56)x=22(57)x=35(58)x=25(59)x=0.2(60)x=6(61)x=24(62)x=5(63)x=5.2(64)x=16(65)x=21(66)x=4(67)x=17(68)x=2(69)x=0.5(70)x=4.8(71)x=12(72)x=3.2(73)x=2.2(74)x=0.7(75)x=21(76)x=0.2(77)x=5.2(78)x=7(79)x=15(80)x=2(81)x=18(82)x=70(83)x=27(84)x=7(85)x=10(86)x=3.3(87)x=3.6(88)x=3.1(89)x=4(90)x=5(91)x=14(92)x=4(93)x=3(94)x=55(95)x=14(96)x=1(97)x=28(98)x=61(99)x=8(100)x=11(101)x=11(102)x=97(103)x=2(104)x=4.4(105)x=4.8(106)x=0.2(107)x=0.2(108)x=3(109)x=35(110)x=8.2(111)x=58(112)x=2(113)x=12(114)x=15(115)x=3(116)x=13(117)x=9(118)x=6.4(119)x=12(120)x=4.9(121)x=1.9(122)x=5(123)x=2(124)x=7.1(125)x=4(126)x=14(127)x=4(128)x=18(129)x=51(130)x=3.6(131)x=50(132)x=5(133)x=7(134)x=11(135)x=0.8(136)x=14(137)x=8(138)x=12(139)x=16(140)x=9(141)x=15(142)x=2(143)x=7(144)x=2.4(145)x=0.2(146)x=18(147)x=60(148)x=59(149)x=0.8(150)x=15(151)x=2(152)x=11(153)x=5(154)x=14(155)x=2(156)x=74(157)x=2.3(158)x=90(159)x=71(160)x=70(161)x=0.3(162)x=58(163)x=4.3(164)x=4(165)x=52(166)x=5.3(167)x=2(168)x=29(169)x=8(170)x=9(171)x=5(172)x=7.4(173)x=82(174)x=0.4(175)x=28(176)x=7(177)x=11(178)x=5(179)x=13(180)x=1.5(181)x=29(182)x=8(183)x=28(184)x=18(185)x=4(186)x=78(187)x=7(188)x=7(189)x=0.8(190)x=2(191)x=4(192)x=6.8(193)x=69(194)x=31(195)x=4.8(196)x=53(197)x=11(198)x=34(199)x=6(200)x=1.2(201)x=2.8(202)x=52(203)x=6(204)x=2(205)x=1.1(206)x=0.6(207)x=60(208)x=74(209)x=2(210)x=13(211)x=15(212)x=20(213)x=5(214)x=7(215)x=88(216)x=35(217)x=15(218)x=0.8(219)x=38(220)x=4.5(221)x=10(222)x=0.7(223)x=4.8(224)x=8(225)x=3(226)x=0.4(227)x=21(228)x=10(229)x=7(230)x=4(231)x=9(232)x=3(233)x=0.2(234)x=80(235)x=5(236)x=1(237)x=13(238)x=7.8(239)x=90(240)x=86(241)x=1.1(242)x=15(243)x=15(244)x=4(245)x=5(246)x=2.4(247)x=1(248)x=14(249)x=91(250)x=1.8(251)x=8(252)x=16(253)x=9(254)x=3(255)x=2(256)x=1.1(257)x=5.6(258)x=14(259)x=9.3(260)x=24(261)x=2.1(262)x=155(263)x=0.6(264)x=14(265)x=9.9(266)x=35(267)x=4.4(268)x=10(269)x=19(270)x=6.8(271)x=4(272)x=0.2(273)x=0.2(274)x=2(275)x=14(276)x=3(277)x=2.6(278)x=9(279)x=2(280)x=36(281)x=0.2(282)x=49(283)x=4(284)x=8.2(285)x=0.7(286)x=2(287)x=17(288)x=0.8(289)x=1(290)x=12(291)x=15(292)x=0.2(293)x=20(294)x=27(295)x=2(296)x=8.7(297)x=2(298)x=0.9(299)x=52(300)x=4(301)x=13(302)x=2(303)x=2.8(304)x=147(305)x=7(306)x=18(307)x=2(308)x=6(309)x=0.6(310)x=14(311)x=5(312)x=0.4(313)x=5(314)x=3.1(315)x=4.4(316)x=21(317)x=11(318)x=50(319)x=4.8(320)x=6.6(321)x=2(322)x=0.5(323)x=189(324)x=4(325)x=13(326)x=3(327)x=24(328)x=5(329)x=85(330)x=21(331)x=0.2(332)x=45(333)x=19(334)x=39(335)x=8(336)x=11(337)x=18(338)x=10(339)x=4(340)x=3(341)x=4(342)x=81(343)x=2(344)x=0.7(345)x=0.8(346)x=3.6(347)x=8(348)x=3(349)x=1.6(350)x=12(351)x=2.4(352)x=14(353)x=11(354)x=10(355)x=6.8(356)x=6(357)x=0.5(358)x=22(359)x=2(360)x=22(361)x=10(362)x=33(363)x=5.8(364)x=10(365)x=11(366)x=81(367)x=91(368)x=19(369)x=5(370)x=13(371)x=0.3(372)x=10(373)x=7(374)x=9(375)x=18(376)x=9(377)x=2(378)x=23(379)x=8(380)x=6.4(381)x=7(382)x=5(383)x=17(384)x=3(385)x=90(386)x=12(387)x=4.9(388)x=23(389)x=3(390)x=15(391)x=12(392)x=1.3(393)x=5(394)