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)30x+8×2.1=28.8(2)4.1x+2.8x-1.1=19.6(3)10.7-0.5x=8.7(4)x÷62=0.2(5)8x+19x=108(6)15x+12x=162(7)6.1x-1.5x=32.2(8)4.4x=8.8(9)5(1.4x+2.1)=31.5(10)16x-10x-2.4=33(11)15x-16×0.6=5.4(12)x-3.7=4.7(13)0.2x+3.9=4.3(14)x÷18=9(15)8.6x-3.6x-3.2=11.8(16)1.5x-5.4=9.6(17)11.6÷x=2.9(18)(5.1x+3.6)÷25=3(19)15x-4×10=80(20)5.1x-2.4x-1.7=3.7(21)2x+3x-3.1=4.4(22)(17x+23)÷12=9(23)(9.5x+8.8)÷3=15.6(24)12x-9x+49=97(25)9.8÷x=0.2(26)4.7+x=13(27)0.6x+0.2x+2.2=49.4(28)15x-2x+36=153(29)2.7x=13.5(30)15.1+10x=18.1(31)11x+6x=51(32)26x-31×3=89(33)2x-41=89(34)7.9-12x=4.3(35)9x-19=143(36)x-0.7=4.9(37)0.6x+4.9=9.7(38)9(0.3x+3.5)=42.3(39)3.1x-1.5x-1=32.6(40)x+0.8=4.8(41)x-3.8=1.3(42)189-13x=33(43)29x+3×4.2=21.3(44)0.3x+1.9×9=21.3(45)10x+17×0.5=14.5(46)169-4x=129(47)9.8-x=1.7(48)13.2-9x=3.3(49)6.8x-4.3x+1.2=18.7(50)3x+9x+3=63(51)18x=10.8(52)97x-85x+3.4=5.8(53)2(x+44)=150(54)1.1x÷22=0.2(55)0.4x-3.3=6.3(56)7.8÷x=2.6(57)6x-2×82=16(58)x÷3=4.7(59)3.7+x=10.3(60)33x+52x-3.3=124.2(61)15x-7x=104(62)1.2x+2.9x+2.5=137.8(63)2.6x-5.7=2.1(64)x-5.8=1.3(65)19x=133(66)4(3x-14)=100(67)x+18=32(68)6x÷12=1.2(69)163-5x=73(70)24x+16=208(71)5x-10×0.7=7.5(72)27x-2×50=35(73)4.5x÷30=0.6(74)3x-3×26=39(75)3x+1.8=4.2(76)(5x+7)÷32=1(77)36x÷90=0.2(78)3(0.4x+0.8)=28.8(79)62+x=146(80)0.8x+0.9x+4.7=96.5(81)7.9x-6x=17.1(82)9.6x+3x=50.4(83)(4x+8.4)÷26=1.4(84)1.8+1.1x=9.5(85)14(1.9x-6.5)=15.4(86)9.9-x=6.6(87)0.5x+4.2x+3.4=59.8(88)4(22x+3)=188(89)9.2+0.9x=20(90)4x+9x-25=66(91)(2.2x-4)÷10=1.8(92)18x+5.7=14.7(93)x-32=21(94)12x=72(95)(5x-12)÷9=7(96)4.1-0.6x=1.1(97)2x+4x=186(98)18.8-0.4x=16.4(99)11x-5x=90(100)3(7x-49)=126(101)12x-3x+5=68(102)18x÷54=2(103)18x-3x+1=4(104)18.5÷x=0.5(105)12x-3×10=66(106)x÷2=21(107)2x=8.8(108)0.5x-0.5×6=5(109)11x-5x=84(110)4x-5×2.9=2.3(111)4.1+x=11.3(112)23x-6x-2.9=27.7(113)(2x-2.2)÷9=2.2(114)27+x=120(115)14x+15x=261(116)(19x-8)÷6=5(117)14x-4.6=3.8(118)21x+58×2=242(119)1.6+11x=13.7(120)37x+80x-4.4=42.4(121)13x+13×0.3=22.1(122)x+40=49(123)1.8x+1.3×5=22.7(124)10x-5x-11=69(125)(1.6x+7.6)÷4=7.9(126)1.5x-1.2x=18.9(127)(9x-1.6)÷16=4.4(128)11.3-11x=3.6(129)x-29=44(130)15x÷25=0.3(131)x+0.2=8.6(132)3.9+x=4.6(133)16.4-13x=13.8(134)4x+2x-3.3=140.7(135)x+7=13.6(136)89+x=106(137)8(12x-38)=176(138)12x+53x+3.8=42.8(139)26x+27x-4.6=149.1(140)7x+3.2=12.3(141)6x=78(142)133-26x=55(143)10x-7x-47=10(144)(17x-33)÷5=41(145)6.3x-3.8x+0.7=13.2(146)1.6x-1.9×5=1.7(147)4x-1.2=15.6(148)39-x=15(149)11x+3x-3.2=87.8(150)21x+52=136(151)2.7x+6.4x=27.3(152)(0.3x+8.4)÷4=3(153)17.8-0.2x=4(154)10.9-1.2x=4.9(155)42-x=13(156)84x-30x-1.8=46.8(157)1.5x+5x=117(158)2x+8×15=256(159)21x=84(160)5x+8x=221(161)66x+5.9=25.7(162)9.9-x=4.3(163)7x+13x=180(164)4(3x+5)=56(165)45x÷15=9(166)4x+19=111(167)0.4x÷32=0.2(168)1.7x+0.8x-0.7=44.3(169)13x-15=50(170)x÷9=0.4(171)4.1x+0.3×41=28.7(172)76+x=147(173)48x+52x-3.2=16.8(174)3x-2.2x=1.6(175)6x-3.5=4.3(176)7.1x-5.2x+0.2=19.2(177)9x÷21=3(178)12÷x=2(179)12x÷4=21(180)19.9-2.1x=7.3(181)14-10x=8(182)94+2x=204(183)3.4+26x=11.2(184)2x+2.3=6.3(185)16x+17x+9=75(186)8.1x-6.9x+2.2=9.4(187)10(0.4x-3.2)=28(188)9.4x+9.1x=166.5(189)x-25=60(190)13x+22=87(191)(7x-5.5)÷11=6.5(192)124÷x=4(193)(15x-19)÷13=17(194)1x-0.7x=1.2(195)x÷20=0.5(196)3x-2.9=12.1(197)4(21x-14)=196(198)2x+18x+3.9=69.9(199)4x+5.2=13.6(200)60x-21x+0.2=15.8(201)4.8x=19.2(202)2x+11x-2=63(203)16x+7x-15=31(204)11.1+0.3x=15.6(205)2.6x+8.9x=115(206)17.2÷x=0.2(207)(5.6x-7)÷5=15.4(208)0.4x-5.3=7.1(209)0.2x=14(210)0.4x+3×6=32.8(211)178-4x=78(212)78-x=32(213)11x-3x+31=71(214)56x-11x-4.3=4.7(215)117÷x=9(216)10x+4×39=216(217)74x-38x+4.6=47.8(218)12x+5x+35=256(219)8.6x=17.2(220)17x-32=70(221)x+83=132(222)0.5x+0.5×34=35.5(223)17x-4x+36=166(224)15x-2x+6=149(225)9.2x+2.1x-2.2=76.9(226)11x+6×2.2=26.4(227)22x+2×0.5=18.6(228)8.7-x=8.5(229)0.8+x=7.3(230)0.3x+1.4=15.5(231)1.5x-5=13(232)76÷x=2(233)14.7+1.5x=26.7(234)8.8x-6.2x-4.7=13.5(235)0.7x+2.3x+4.8=79.8(236)x-24=15(237)6.2x-1.5x-0.9=50.8(238)38x-2×4.7=9.6(239)4(2.3x-5.1)=25.6(240)6x+3x-14=193(241)63x-22x+3.3=23.8(242)(17x-29)÷11=19(243)22x-3.4=14.2(244)3x=2.1(245)3x+4.4=13.1(246)x-2.2=7(247)8.9x-7.8x+4.4=13.2(248)13+4x=25(249)2x=92(250)x-3=48(251)8x-6x=18(252)7(3.8x-9.4)=40.6(253)191+33x=323(254)(5x+36)÷7=23(255)18x-25=83(256)11x+7x+16=124(257)3.6x-1.5x=27.3(258)7x÷9=21(259)69x-42x-0.5=26.5(260)8.1+0.5x=22.6(261)x÷64=3(262)8.2x+0.9x+3.1=94.1(263)2(14x+49)=182(264)78x-7x-3.2=74.9(265)7.1-2x=2.7(266)16-0.4x=11.6(267)4(4x-25)=124(268)71+53x=177(269)13x+10x+17=293(270)10(4x-35)=130(271)139+13x=204(272)2x+87×2=280(273)2x÷10=1.4(274)1.9x-1.2x+4.1=40.5(275)61+x=114(276)1.4x÷35=0.4(277)13(0.2x-1.9)=19.5(278)139+2x=281(279)3(2.5x+4.1)=27.3(280)2x+7×28=248(281)6x-4.8=9(282)42x÷21=0.4(283)3x+5.7=24.6(284)63x+47x+4.4=26.4(285)1.5+0.6x=7.5(286)10.8+2x=24.4(287)7x+8x+8=383(288)49-x=41(289)12x-6x+39=63(290)120-8x=48(291)(3.3x-5.4)÷4=6.9(292)9.6+4x=20.4(293)48+x=51(294)5x÷8=1(295)x÷35=0.2(296)18.3-0.2x=11.7(297)5x=15(298)4x+8x-46=146(299)4-x=2(300)86+2x=182(301)16x-7x=108(302)2x+28x+4=25(303)x+4=10.9(304)18x-2x=80(305)46x-21×0.2=9.6(306)(3.5x+5)÷5=7.3(307)8x-1.3x+1.8=55.4(308)30+x=33(309)x+72=158(310)3(x+7)=141(311)0.7x÷3=3.5(312)17x+16x+46=244(313)37x+42=116(314)15x+16x=372(315)5.5-x=1.6(316)72-x=62(317)81x÷18=9(318)3.1x-4.7=1.5(319)9.7-x=1.2(320)1.8x-0.2x+4.5=54.1(321)x+4.3=11.2(322)4x=12(323)10x-13×4=118(324)6.2x-2.7x=38.5(325)x+93=95(326)5x-5×0.3=14.5(327)8x-4x+4.4=42.4(328)7x-4×0.8=1(329)24x+50=98(330)2x-2×60=44(331)132÷x=12(332)7.6+0.6x=20.2(333)35x-8x+0.2=16.4(334)3.7x-0.8x=63.8(335)8.1x+6.7x-4.6=143.4(336)4.4x+6.3x+1.7=108.7(337)(3.8x+7)÷22=3.6(338)1.7x+2.5x-3=148.2(339)8(2x+3)=120(340)5x+7x+4.9=79.3(341)3x+9x+12=156(342)18x-5x-25=118(343)2x-36=86(344)57x-15x-0.4=24.8(345)7x+1.2x=57.4(346)5.3+x=6.9(347)0.6x+4.1=22.7(348)10x-6x-23=33(349)(11x+12)÷6=24(350)(5.2x-7.3)÷15=6.1(351)168÷x=6(352)10x+15x-3=322(353)15x-6x=72(354)5.2x+3.2x+1.5=144.3(355)4x÷12=14(356)14x+11x-3=172(357)84-x=10(358)(3.5x-9.6)÷4=8.1(359)3x=117(360)x+89=175(361)x÷44=0.2(362)15.3-0.2x=3.9(363)24+x=28(364)114-33x=48(365)(13x+20)÷2=101(366)(8x+12)÷12=9(367)64x+42x+0.9=53.9(368)(3.2x+5.2)÷26=1.8(369)9.2-x=3.7(370)4(2.8x-8.6)=21.6(371)(18x+43)÷7=37(372)28x-3×0.9=14.1(373)4x=10.4(374)x÷3=48(375)15+24x=27(376)26-x=23(377)19x-2.9=6.6(378)17x-6x+28=138(379)4.8x+0.4×5=21.2(380)88-x=16(381)x-2.7=3.3(382)34x-5.7=7.9(383)18x+37×2=200(384)(4x+24)÷12=4(385)3x+18x=189(386)2.9x-1.8×7=4.8(387)7x-22=27(388)13.8+13x=29.4(389)4x÷2=1.8(390)(19x-10)÷8=13(391)23+4x=103(392)2(x+7)=32(393)10x-10×0.9=11(394)6.5x-0.2x+2.4=27.6(395)92x-27x-4.8=8.2(396)0.5x-2×3=3.5(397)4.8x-0.8x-0.8=71.2(398)x÷3=2.6(399)4x=196(400)7.2x+4.3x+1.6=59.1(401)(4.7x+0.6)÷36=0.8(402)3(0.9x+0.5)=33.9(403)3.7x+6.4x-3.3=37.1(404)x+1.7=5.9(405)5x-2x-9=90(406)167+19x=281(407)83-x=41(408)49x-7x+4=54.4(409)12x-5.6=6.4(410)1x+5.7x=100.5(411)7.3x-0.8x=13(412)2.3+x=2.7(413)x÷2=1.6(414)x+51=82(415)1.8x-0.9×2=14.4(416)16.9+2x=34.3(417)3(x-6.3)=47.1(418)3x+2.8=4(419)4x+6×0.5=7.8(420)3x=2.4(421)82+x=119(422)7x+9×5=178(423)63x+36x-2.9=76.3(424)0.8x+2.7=4.3(425)13.3-27x=2.5(426)9x+36x-2.3=51.7(427)64÷x=32(428)(12x-27)÷3=15(429)x-48=30(430)50x÷8=2.5(431)28x÷6=14(432)x-33=18(433)9.8x÷4=4.9(434)4x+4.3x=141.1(435)15.4÷x=1.1(436)8x+2.4=19.2(437)1.9+15x=18.4(438)2x÷46=4(439)10(4x+6)=180(440)x÷13=8(441)16.3+2x=22.3(442)0.2x-5.3=7.5(443)13.4-4x=3(444)3x=14.1(445)3x-19=173(446)52x+58x+4.2=26.2(447)x-4.2=1.2(448)x-14=40(449)x+5.6=11.3(450)x-1.4=5.1(451)2(x+47)=146(452)6.5x-2.8x-3.7=11.1(453)7x+48=167(454)3.7x+7.3x-4.8=61.2(455)x-46=14(456)10.4-2x=5.2(457)19x-10x=54(458)x-1.4=2(459)3(1.3x+8.5)=33.3(460)26x+99x+2=127(461)x÷64=2(462)6.6÷x=2.2(463)7x+4x-20=167(464)x+62=99(465)(19x-21)÷5=49(466)81-3x=69(467)0.4x-5.6=10(468)x÷36=0.3(469)11x+52x+1.1=57.8(470)2x-1.9=8.5(471)13x-2x-4=161(472)0.6x-1.5×2=12.6(473)1x+1.5x-1.8=105.7(474)5.3x+8.3x=81.6(475)1.1x+1.8=18.3(476)8x-6x+35=59(477)x+0.5=8.9(478)8x=13.6(479)0.3x+2.3×4=14(480)2.1x-0.2x-4.2=75.6(481)8x-4x-5=23(482)7(0.3x+1.9)=34.3(483)(6x+25)÷37=1(484)2x=64(485)2.3x-1.2×7=7.7(486)13.6÷x=0.8(487)2x+2×83=270(488)(5.7x-8.9)÷2=9.8(489)26x+12×0.8=17.4(490)1.4x=4.2(491)8(1.8x-1.5)=16.8(492)2.2x+2.6=7(493)25x+34=209(494)3(5x-39)=183(495)(5x-39)÷22=3(496)16.1÷x=0.7(497)31x=12.4(498)0.2x÷4=4.3(499)7x+13×7=238(500)x+6.1=15.6(501)x÷22=9(502)3.5x=17.5(503)2.4x-0.3×32=7.2(504)128-2x=74(505)5(0.3x+6.9)=43.5(506)1x+2.2×6=22.2(507)10x+14x-40=104(508)66x=132(509)2x+4x-34=260(510)6.2+x=16(511)13x-7x-23=25(512)5x-3×30=105(513)x+81=120(514)2(0.4x+2.5)=9(515)0.7+x=1.6(516)3.9+4.7x=22.7(517)84x-55=113(518)17x-3x=126(519)0.2x+2×2=8.6(520)4x÷20=0.8(521)9.6x-6.2x-1.1=19.3(522)3(4x-26)=54(523)190÷x=5(524)x÷14=10(525)50x-40x-3.9=6.1(526)8.9-x=3.7(527)50x-31x+2=40(528)4.9x-1.9×7=6.3(529)1.2x+4.7=9.5(530)22x+2×4.5=26.6(531)15(1.7x-9)=43.5(532)10x-6x-37=27(533)12x÷24=0.2(534)19x+54=187(535)2x=0.8(536)x÷4=45(537)0.3x÷24=0.7(538)5x+3x+28=324(539)160÷x=5(540)7(8x-6)=70参考答案(1)x=0.4(2)x=3(3)x=4(4)x=12.4(5)x=4(6)x=6(7)x=7(8)x=2(9)x=3(10)x=5.9(11)x=1(12)x=8.4(13)x=2(14)x=162(15)x=3(16)x=10(17)x=4(18)x=14(19)x=8(20)x=2(21)x=1.5(22)x=5(23)x=4(24)x=16(25)x=49(26)x=8.3(27)x=59(28)x=9(29)x=5(30)x=0.3(31)x=3(32)x=7(33)x=65(34)x=0.3(35)x=18(36)x=5.6(37)x=8(38)x=4(39)x=21(40)x=4(41)x=5.1(42)x=12(43)x=0.3(44)x=14(45)x=0.6(46)x=10(47)x=8.1(48)x=1.1(49)x=7(50)x=5(51)x=0.6(52)x=0.2(53)x=31(54)x=4(55)x=24(56)x=3(57)x=30(58)x=14.1(59)x=6.6(60)x=1.5(61)x=13(62)x=33(63)x=3(64)x=7.1(65)x=7(66)x=13(67)x=14(68)x=2.4(69)x=18(70)x=8(71)x=2.9(72)x=5(73)x=4(74)x=39(75)x=0.8(76)x=5(77)x=0.5(78)x=22(79)x=84(80)x=54(81)x=9(82)x=4(83)x=7(84)x=7(85)x=4(86)x=3.3(87)x=12(88)x=2(89)x=12(90)x=7(91)x=10(92)x=0.5(93)x=53(94)x=6(95)x=15(96)x=5(97)x=31(98)x=6(99)x=15(100)x=13(101)x=7(102)x=6(103)x=0.2(104)x=37(105)x=8(106)x=42(107)x=4.4(108)x=16(109)x=14(110)x=4.2(111)x=7.2(112)x=1.8(113)x=11(114)x=93(115)x=9(116)x=2(117)x=0.6(118)x=6(119)x=1.1(120)x=0.4(121)x=1.4(122)x=9(123)x=9(124)x=16(125)x=15(126)x=63(127)x=8(128)x=0.7(129)x=73(130)x=0.5(131)x=8.4(132)x=0.7(133)x=0.2(134)x=24(135)x=6.6(136)x=17(137)x=5(138)x=0.6(139)x=2.9(140)x=1.3(141)x=13(142)x=3(143)x=19(144)x=14(145)x=5(146)x=7(147)x=4.2(148)x=24(149)x=6.5(150)x=4(151)x=3(152)x=12(153)x=69(154)x=5(155)x=29(156)x=0.9(157)x=18(158)x=68(159)x=4(160)x=17(161)x=0.3(162)x=5.6(163)x=9(164)x=3(165)x=3(166)x=23(167)x=16(168)x=18(169)x=5(170)x=3.6(171)x=4(172)x=71(173)x=0.2(174)x=2(175)x=1.3(176)x=10(177)x=7(178)x=6(179)x=7(180)x=6(181)x=0.6(182)x=55(183)x=0.3(184)x=2(185)x=2(186)x=6(187)x=15(188)x=9(189)x=85(190)x=5(191)x=11(192)x=31(193)x=16(194)x=4(195)x=10(196)x=5(197)x=3(198)x=3.3(199)x=2.1(200)x=0.4(201)x=4(202)x=5(203)x=2(204)x=15(205)x=10(206)x=86(207)x=15(208)x=31(209)x=70(210)x=37(211)x=25(212)x=46(213)x=5(214)x=0.2(215)x=13(216)x=6(217)x=1.2(218)x=13(219)x=2(220)x=6(221)x=49(222)x=37(223)x=10(224)x=11(225)x=7(226)x=1.2(227)x=0.8(228)x=0.2(229)x=6.5(230)x=47(231)x=12(232)x=38(233)x=8(234)x=7(235)x=25(236)x=39(237)x=11(238)x=0.5(239)x=5(240)x=23(241)x=0.5(242)x=14(243)x=0.8(244)x=0.7(245)x=2.9(246)x=9.2(247)x=8(248)x=3(249)x=46(250)x=51(251)x=9(252)x=4(253)x=4(254)x=25(255)x=6(256)x=6(257)x=13(258)x=27(259)x=1(260)x=29(261)x=192(262)x=10(263)x=3(264)x=1.1(265)x=2.2(266)x=11(267)x=14(268)x=2(269)x=12(270)x=12(271)x=5(272)x=53(273)x=7(274)x=52(275)x=53(276)x=10(277)x=17(278)x=71(279)x=2(280)x=26(281)x=2.3(282)x=0.2(283)x=6.3(284)x=0.2(285)x=10(286)x=6.8(287)x=25(288)x=8(289)x=4(290)x=9(291)x=10(292)x=2.7(293)x=3(294)x=1.6(295)x=7(296)x=33(297)x=3(298)x=16(299)x=2(300)x=48(301)x=12(302)x=0.7(303)x=6.9(304)x=5(305)x=0.3(306)x=9(307)x=8(308)x=3(309)x=86(310)x=40(311)x=15(312)x=6(313)x=2(314)x=12(315)x=3.9(316)x=10(317)x=2(318)x=2(319)x=8.5(320)x=31(321)x=6.9(322)x=3(323)x=17(324)x=11(325)x=2(326)x=3.2(327)x=9.5(328)x=0.6(329)x=2(330)x=82(331)x=11(332)x=21(333)x=0.6(334)x=22(335)x=10(336)x=10(337)x=19(338)x=36(339)x=6(340)x=6.2(341)x=12(342)x=11(343)x=61(344)x=0.6(345)x=7(346)x=1.6(347)x=31(348)x=14(349)x=12(350)x=19(351)x=28(352)x=13(353)x=8(354)x=17(355)x=42(356)x=7(357)x=74(358)x=12(359)x=39(360)x=86(361)x=8.8(362)x=57(363)x=4(364)x=2(365)x=14(366)x=12(367)x=0.5(368)x=13(369)x=5.5(370)x=5(371)x=12(372)x=0.6(373)x=2.6(374)x=144(375)x=0.5(376)x=3(377)x=0.5(378)x=10(379)x=4(380)x=72(381)x=6(382)x=0.4(383)x=7(384)x=6(385)x=9(386)x=6(387)x=7(388)x=1.2(389)x=0.9(390)x=6(391)x=20(392)x=9(393)x=2(394)x