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)2.9x+6.5x+3.7=22.5(2)35x+14x+2=124.5(3)5x+35×5=350(4)5.9x+3.4x-1.6=26.3(5)17x+34=68(6)6÷x=0.5(7)x÷12=1.1(8)6.1x-0.4x-3.4=65(9)7.6+x=12.3(10)5x-2x-37=62(11)3x÷6=2.6(12)7(3x-28)=98(13)(5.7x-1.5)÷6=12.1(14)7+x=10.5(15)38x=19(16)(6.3x+1.4)÷38=0.7(17)(9.8x-1)÷17=3.4(18)4x+5.8=13(19)70x-31x-4.8=6.9(20)184÷x=4(21)x-12=21(22)2.5x-1×4=6(23)3(8.8x-7)=31.8(24)6.9x-0.3x+3.4=29.8(25)15x-8x-20=64(26)0.3x÷17=0.6(27)1.5x÷5=3.9(28)(8.1x+0.3)÷21=3.1(29)1.1x+1.8×4=14.9(30)4x÷28=5(31)2.9+1.2x=16.1(32)8.9-x=2.2(33)128÷x=4(34)3x-45×2=93(35)3.6x-1.9x+4.8=8.2(36)4x-33=67(37)0.9x-0.7x=12.4(38)19x-14x=45(39)(9.1x+5)÷23=1.8(40)15x=60(41)4.7x-1.1=13(42)0.9x+5.5=11.8(43)0.5x+1.4=13.4(44)7x-2x+44=59(45)0.7x-1.8×4=2.6(46)2(0.4x+8.8)=37.6(47)5.8x-0.2x-2=48.4(48)130÷x=10(49)1.1x-0.2×27=4.5(50)9.2x-8.2x=10(51)5.1x+5.2x-3.2=48.3(52)2(0.3x+3.9)=25.8(53)x-6=1.6(54)74+x=110(55)2.2x-2.3=13.1(56)3x+9x-36=120(57)1.9x+6.1x=24(58)x-81=18(59)0.6x-0.2×18=7.8(60)3(2.9x-0.6)=33(61)x+29=122(62)9.6+27x=17.7(63)0.2x=3.8(64)7x+10x=136(65)77x+99x-0.6=87.4(66)3x-8×6=87(67)14x+8x-22=242(68)(16x+6)÷2=107(69)(11x-18)÷17=8(70)x÷4=3.6(71)4x-3x=17(72)0.3x+2.8×6=22.5(73)10x-6×2.4=3.6(74)x+70=152(75)2x-25=167(76)15x=195(77)3x-41=55(78)17x-11x+44=104(79)8.1x+3.6x=46.8(80)2.9x+0.4×8=20.6(81)61+90x=241(82)24÷x=4(83)7x+4.6=17.2(84)7(0.9x+1.2)=33.6(85)0.3x-3.3=6(86)12+3x=48(87)30x+72x-3.6=108.6(88)(8x+44)÷4=35(89)33x-7x+2.5=75.3(90)2(20x-39)=162(91)47x-24x+3=35.2(92)10.2+70x=24.2(93)80-x=27(94)14x-5x=90(95)18x+1.5=10.5(96)0.4x=14(97)1.6x-0.7×4=2(98)12x-10x+39=51(99)2.5x+4.1x+4.8=24.6(100)13.2÷x=2.2(101)2(18x+48)=168(102)8.3x-2.9x-1.7=14.5(103)2(22x-4)=168(104)12.1+3x=21.1(105)(17x+42)÷33=9(106)39-x=25(107)2.5x-0.2×21=10.8(108)1.5x-0.5x+3.1=58.1(109)1x-3=17(110)1x+2.6=11.6(111)5x+3×4.9=18.7(112)114-23x=22(113)19.2÷x=0.4(114)7x-2x-11=89(115)3.8+18x=23.6(116)0.2x÷13=0.6(117)5.7x+5.5x+4.4=161.2(118)18x-44=10(119)11.3-2x=6.1(120)17.4-2.4x=12.6(121)6x=24(122)3x+14×11=205(123)172-2x=154(124)8.3x-2.1x-2.9=34.3(125)(4x-0.8)÷24=0.8(126)49x÷14=1.4(127)14+x=77(128)7.1x-1.6x-1.9=75.1(129)2x=5.6(130)32x-2x+0.6=45.6(131)x+34=112(132)(7.7x+3.2)÷5=14.5(133)18x+31x-3.7=138.4(134)3(x+18)=159(135)15x+7x+4=92(136)3(20x-26)=42(137)4(15x+5)=140(138)13x-6x=105(139)1.6x=4.8(140)15.4-0.4x=1.8(141)5x-5×30=10(142)x+4.6=9.4(143)7x+9x+5=101(144)33x-11x+1.3=49.7(145)15.2-3x=8.3(146)66x÷11=1.2(147)22x÷6=1.1(148)46x=184(149)6.7+x=16.1(150)2(6.7x+6.7)=40.2(151)82+x=172(152)2x-24×3=94(153)9x-6×0.2=14.1(154)6.5x÷13=1(155)5.6x-2.6x=27(156)178-2x=118(157)7-x=6.7(158)21x÷49=3(159)0.4x-2.5×2=14.2(160)0.8x+1.1x-3.4=133.4(161)0.2x+1.3=12.7(162)6(3x-42)=180(163)14x-3x=22(164)8.6+2.7x=16.7(165)8x+3.4=6.6(166)70÷x=10(167)6.9+x=16.1(168)7.8-x=3.9(169)12.1÷x=1.1(170)(6x-24)÷15=2(171)0.5x=6.5(172)3(0.6x+0.3)=24.3(173)x÷86=0.2(174)3x+6×33=228(175)4(0.9x+4)=26.8(176)6x-2x+14=66(177)2x+7x-35=10(178)9x÷20=0.9(179)8x-10=14(180)4x+2x-14=64(181)2.4x+3.1x+4.6=153.1(182)83x-78x+3.9=5.9(183)92x-70x-0.3=6.3(184)9x=11.7(185)0.4x=18.4(186)16.6-5x=6.6(187)6.7x-2.4x+0.9=18.1(188)44-x=40(189)17x-14x=18(190)50x-7x-3.9=64.9(191)12.8-8x=8(192)1x+1.3x-1.8=136.2(193)95x-19x-3.2=12(194)14x-2.3=17.3(195)x-3.8=5.6(196)18.1-7.4x=3.3(197)7.8-x=2.8(198)32x-26x-2.3=15.1(199)168+2x=184(200)11x-6x-38=12(201)4x+0.8×17=29.6(202)(15x+20)÷10=17(203)16.7+0.4x=17.5(204)21x-11x+4=9(205)12.3-5x=11.3(206)7x-5x+5=37(207)2x+3.9=16.1(208)x÷6=25(209)8(0.2x-2.3)=16.8(210)2x+27×0.4=16.6(211)45x+12=102(212)(12x+24)÷9=32(213)87-2x=69(214)10.6-6x=7(215)15x-26×0.5=6.5(216)0.6x+4.3x-2.9=100(217)13x+5×32=342(218)(14x-4)÷10=22(219)x÷11=0.5(220)x÷3=30(221)9.6÷x=0.6(222)5x+2.5x=112.5(223)0.6x÷18=0.9(224)190÷x=19(225)2x+57=257(226)35x-36=139(227)17.3+1.3x=29(228)7x+5.2=21.3(229)0.3x+5.9=13.4(230)69+47x=257(231)13x+53=209(232)32x+54=246(233)38x-2×2=11.2(234)x+3.8=5.4(235)x÷20=3(236)16.8+0.2x=20.4(237)11x-4×0.6=13(238)15(19x-25)=195(239)72-x=30(240)169-16x=57(241)84x+52x+3.2=30.4(242)7.3x+9x+0.5=114.6(243)81x+43x-3.1=71.3(244)4x-2x+8=26(245)33x+4×0.3=14.4(246)x+3=4.8(247)x÷2=27(248)7.6x+5.1x+2=65.5(249)18.8-0.3x=13.7(250)6x+8x-33=177(251)(3.6x+9.6)÷3=5.6(252)(1.7x-8.6)÷19=0.8(253)59-x=50(254)18x+14x=288(255)4(x+2)=96(256)31+x=97(257)16.9-0.3x=10(258)30+x=88(259)0.2x+2.4=3.4(260)15x-10x-1.4=17.1(261)19x-12x-21=35(262)9x-1.4x+4.2=57.4(263)11.6+2x=13(264)5.1x+4.7x-3.4=55.4(265)27(3.7x-9.4)=45.9(266)x+63=153(267)15.4-70x=1.4(268)16x+8x=240(269)32x÷8=2(270)x+83=156(271)3x-3.4=7.7(272)9x+7x+32=128(273)8x-5x=12(274)98x-9x+2.8=74(275)10x+18x-4=192(276)9x+3×1.9=15.6(277)4x-45=111(278)5x+6×15=160(279)x÷3=3.8(280)(1.4x-2.6)÷2=4.3(281)x+4.4=4.6(282)8x-5x-12=15(283)18x-13x+21=61(284)11.8-0.5x=2.8(285)2.6x+5.8x=16.8(286)(4.4x+1.2)÷28=1.3(287)x-30=67(288)49x-5×1.1=4.3(289)3(x+12)=108(290)x+10=102(291)(9x+18)÷9=16(292)x÷18=0.2(293)99x-80x+0.2=4(294)x-12=55(295)13.2÷x=0.6(296)2x-4×25=12(297)0.2x+4.9=14.3(298)97+x=165(299)2x+5.4=21.4(300)6.2x+8.2x=172.8(301)8.2+x=9.5(302)2.5x+0.8x=89.1(303)8.4x-6.7x-2.6=14.4(304)0.4x-5.4=4.2(305)2x÷18=10(306)84-x=18(307)(8.3x-3.3)÷4=13.7(308)14x-2=3.6(309)x÷7=13(310)10x+16×12=242(311)16x÷12=12(312)(0.4x+3.6)÷2=3(313)6(0.8x+1.9)=21(314)14(0.6x-2.6)=39.2(315)62+23x=108(316)23x+30x+4.2=73.1(317)2(14x-22)=96(318)8(5x+7)=136(319)193-2x=51(320)9x=17.1(321)14.9-6x=9.5(322)4x+19×1=32.6(323)180-7x=33(324)64-x=50(325)33x+22x-3=79.5(326)7(1.5x-0.8)=25.9(327)22x+8×7=122(328)77x-24x-3=23.5(329)0.6x+1.2×5=7.2(330)(8.1x-9.6)÷3=15.7(331)6x-3x-14=82(332)2x-4.4=7.6(333)x+8.4=12.8(334)10x÷20=0.2(335)4.9x-4.2x+1.6=5.1(336)25x=12.5(337)0.3x=12(338)(17x-10)÷10=16(339)2.5-x=1.8(340)13.3+0.7x=28.7(341)19x+25=63(342)69x+87x+3.6=50.4(343)90÷x=5(344)8(5x+7)=176(345)3(4x-30)=126(346)46x-18x-2.1=45.5(347)60x=18(348)2x+27=225(349)45x-2×2.6=8.3(350)28x-2×38=36(351)27x-14x+4.3=9.5(352)x÷8=0.7(353)12.2-0.6x=6.8(354)5x-16=29(355)11x-6x-17=48(356)(4.4x+4.6)÷7=8.2(357)25x+64x-1.2=78.9(358)39x=156(359)190-5x=90(360)(19x+46)÷32=5(361)4x+2x+13=235(362)7(24x-38)=70(363)1.1x+2x+4.3=125.2(364)32x+47x+1.3=88.2(365)8.9x-2.5x+1.4=20.6(366)x÷7=0.7(367)8.4x+4.7=21.5(368)3.7x-1.6×8=2(369)0.4x÷5=2.8(370)6+x=9.8(371)2x+17×0.6=20(372)15.9-0.5x=8.9(373)0.4x-1.3=9.9(374)3.7x-1.2x-2.6=12.4(375)x÷96=2(376)x÷80=0.2(377)(15x-15)÷5=45(378)6x+17x-35=172(379)1.4x÷7=1.2(380)17.9+3x=32(381)(4x+30)÷3=38(382)6x-3x=48(383)19+21x=23.2(384)2x÷13=14(385)87-x=52(386)3.9x+2.3x+1.1=56.9(387)4x-4×12=96(388)3.7x-0.6×15=5.8(389)(6x+38)÷2=25(390)17x-6x-15=29(391)x+4.3=14.2(392)x÷9=8(393)5.2+x=8.7(394)66-x=20(395)x-1.4=7(396)8x-10×1.4=5.2(397)6.4x-3.7x=18.9(398)9x+6x=165(399)x-5.1=4.3(400)1.6x+1.7×10=26.6(401)12÷x=0.4(402)84x÷28=6(403)11x-8x+46=67(404)x+67=106(405)0.5x+9.3x+1.8=41(406)8.2+x=14(407)37x+17x-4.4=33.4(408)4.8x+1.8x=39.6(409)8x+9x=255(410)0.5x=13.5(411)9x+10=127(412)15x+12x+40=175(413)23x+8×0.9=16.4(414)x+96=149(415)9.1+2x=17.1(416)23x-11×9=85(417)x-71=15(418)34x=170(419)16x+7x+49=325(420)78x+81x+3.9=83.4(421)2(0.5x+1)=5(422)48÷x=12(423)x+0.7=8.7(424)25x÷50=0.4(425)2.9x+3.9×5=36.9(426)68x+34x+0.8=72.2(427)14x+5.8=24(428)18x+11x+15=218(429)x÷7=15(430)5.1+x=10.4(431)4x+12x-14=242(432)1.3x-0.4x=53.1(433)7x÷35=2(434)x-0.9=7.1(435)(12x-20)÷5=44(436)0.2x-3.1=16.9(437)34+x=82(438)48x-19=77(439)(6.7x+1.9)÷36=2.1(440)4.1x+5.9x-1=29(441)8.3x=16.6(442)x-1.4=4.8(443)6x+11x=289(444)1.6x+0.2×41=14.6(445)7.5-25x=2.5(446)71x-5.2=9(447)24+2x=100(448)8.7-x=1.2(449)5.9x-1.1x+2.2=40.6(450)4x+43×4=200(451)8x+28×0.6=36(452)0.3x+0.2×30=20.4(453)2.2x=11(454)(6.5x-2.3)÷24=1.8(455)2x÷22=8(456)x+57=149(457)2x=176(458)134+73x=280(459)18x-6×4=174(460)9.8x-8.2x=16(461)16x÷4=44(462)4(1.1x-7.1)=33.2(463)x-14=11(464)7.8x-3.8x-2.6=13.4(465)12x÷3=2(466)4x+15x+4.9=61.9(467)15x=18(468)1.1+4x=11.5(469)9x-4x=65(470)15÷x=0.6(471)3(8x+21)=135(472)4x+3x-45=165(473)3x+4x=49(474)2(2x+19)=74(475)11x+17x=224(476)6.5-1x=2.5(477)x-5.1=4.6(478)2.5-x=1.5(479)4x-2x-0.4=4.2(480)x-3=2.8(481)14x+17x+4=314(482)79+x=166(483)32x-5.2=1.2(484)x+8.6=9.4(485)50x÷20=1(486)x-59=12(487)4.9-x=4.1(488)2(0.3x-1.5)=4.8(489)53x-3.7=12.2(490)3.6x+0.5x=110.7(491)9.5x+9.7x-1.6=94.4(492)180+3x=231(493)6.3x-1.8x=9(494)0.5x÷65=0.3(495)4.6x-0.2x+0.5=79.7(496)3x+89x+0.6=92.6(497)7x+35×0.4=22.4(498)x÷18=11(499)0.5x+1.9=16.9(500)3(0.3x-1.6)=11.4(501)91+x=111(502)35x-1.9=5.1(503)30x+8x-1.8=104.6(504)170÷x=34(505)15x+16x+23=364(506)(17x-19)÷14=12(507)12x-10x=12(508)5(0.4x+4.4)=38(509)18.1+20x=36.1(510)7x=35(511)8.1-x=1.9(512)7x+13x=240(513)2.7x-4.2=12(514)(x-6)÷10=0.7(515)3.3x+4.9x=139.4(516)(8x-28)÷25=4(517)27x+15x-4.2=134.4(518)(4x-16)÷2=18(519)2x+5×31=267(520)9x+46=145(521)2x=6.2(522)4x=18.4(523)2x=12(524)9.8x-5.1x-3.4=24.8(525)10x-16×0.2=4.8(526)x-2.2=2.9(527)16.8÷x=0.6(528)1.2x-3.6=1.2(529)12.5+8.9x=30.3(530)11x+2.2=8.8(531)4.9x-1.1x=30.4(532)11.6+3x=20.6(533)16x-3x+20=72(534)2x+1.2x-3.9=152.9(535)x-9=36(536)91-8x=27(537)x+1.5=7.5(538)x-62=10(539)26+2x=158(540)16x-4.8=8参考答案(1)x=2(2)x=2.5(3)x=35(4)x=3(5)x=2(6)x=12(7)x=13.2(8)x=12(9)x=4.7(10)x=33(11)x=5.2(12)x=14(13)x=13(14)x=3.5(15)x=0.5(16)x=4(17)x=6(18)x=1.8(19)x=0.3(20)x=46(21)x=33(22)x=4(23)x=2(24)x=4(25)x=12(26)x=34(27)x=13(28)x=8(29)x=7(30)x=35(31)x=11(32)x=6.7(33)x=32(34)x=61(35)x=2(36)x=25(37)x=62(38)x=9(39)x=4(40)x=4(41)x=3(42)x=7(43)x=24(44)x=3(45)x=14(46)x=25(47)x=9(48)x=13(49)x=9(50)x=10(51)x=5(52)x=30(53)x=7.6(54)x=36(55)x=7(56)x=13(57)x=3(58)x=99(59)x=19(60)x=4(61)x=93(62)x=0.3(63)x=19(64)x=8(65)x=0.5(66)x=45(67)x=12(68)x=13(69)x=14(70)x=14.4(71)x=17(72)x=19(73)x=1.8(74)x=82(75)x=96(76)x=13(77)x=32(78)x=10(79)x=4(80)x=6(81)x=2(82)x=6(83)x=1.8(84)x=4(85)x=31(86)x=12(87)x=1.1(88)x=12(89)x=2.8(90)x=6(91)x=1.4(92)x=0.2(93)x=53(94)x=10(95)x=0.5(96)x=35(97)x=3(98)x=6(99)x=3(100)x=6(101)x=2(102)x=3(103)x=4(104)x=3(105)x=15(106)x=14(107)x=6(108)x=55(109)x=20(110)x=9(111)x=0.8(112)x=4(113)x=48(114)x=20(115)x=1.1(116)x=39(117)x=14(118)x=3(119)x=2.6(120)x=2(121)x=4(122)x=17(123)x=9(124)x=6(125)x=5(126)x=0.4(127)x=63(128)x=14(129)x=2.8(130)x=1.5(131)x=78(132)x=9(133)x=2.9(134)x=35(135)x=4(136)x=2(137)x=2(138)x=15(139)x=3(140)x=34(141)x=32(142)x=4.8(143)x=6(144)x=2.2(145)x=2.3(146)x=0.2(147)x=0.3(148)x=4(149)x=9.4(150)x=2(151)x=90(152)x=83(153)x=1.7(154)x=2(155)x=9(156)x=30(157)x=0.3(158)x=7(159)x=48(160)x=72(161)x=57(162)x=24(163)x=2(164)x=3(165)x=0.4(166)x=7(167)x=9.2(168)x=3.9(169)x=11(170)x=9(171)x=13(172)x=13(173)x=17.2(174)x=10(175)x=3(176)x=13(177)x=5(178)x=2(179)x=3(180)x=13(181)x=27(182)x=0.4(183)x=0.3(184)x=1.3(185)x=46(186)x=2(187)x=4(188)x=4(189)x=6(190)x=1.6(191)x=0.6(192)x=60(193)x=0.2(194)x=1.4(195)x=9.4(196)x=2(197)x=5(198)x=2.9(199)x=8(200)x=10(201)x=4(202)x=10(203)x=2(204)x=0.5(205)x=0.2(206)x=16(207)x=6.1(208)x=150(209)x=22(210)x=2.9(211)x=2(212)x=22(213)x=9(214)x=0.6(215)x=1.3(216)x=21(217)x=14(218)x=16(219)x=5.5(220)x=90(221)x=16(222)x=15(223)x=27(224)x=10(225)x=100(226)x=5(227)x=9(228)x=2.3(229)x=25(230)x=4(231)x=12(232)x=6(233)x=0.4(234)x=1.6(235)x=60(236)x=18(237)x=1.4(238)x=2(239)x=42(240)x=7(241)x=0.2(242)x=7(243)x=0.6(244)x=9(245)x=0.4(246)x=1.8(247)x=54(248)x=5(249)x=17(250)x=15(251)x=2(252)x=14(253)x=9(254)x=9(255)x=22(256)x=66(257)x=23(258)x=58(259)x=5(260)x=3.7(261)x=8(262)x=7(263)x=0.7(264)x=6(265)x=3(266)x=90(267)x=0.2(268)x=10(269)x=0.5(270)x=73(271)x=3.7(272)x=6(273)x=4(274)x=0.8(275)x=7(276)x=1.1(277)x=39(278)x=14(279)x=11.4(280)x=8(281)x=0.2(282)x=9(283)x=8(284)x=18(285)x=2(286)x=8(287)x=97(288)x=0.2(289)x=24(290)x=92(291)x=14(292)x=3.6(293)x=0.2(294)x=67(295)x=22(296)x=56(297)x=47(298)x=68(299)x=8(300)x=12(301)x=1.3(302)x=27(303)x=10(304)x=24(305)x=90(306)x=66(307)x=7(308)x=0.4(309)x=91(310)x=5(311)x=9(312)x=6(313)x=2(314)x=9(315)x=2(316)x=1.3(317)x=5(318)x=2(319)x=71(320)x=1.9(321)x=0.9(322)x=3.4(323)x=21(324)x=14(325)x=1.5(326)x=3(327)x=3(328)x=0.5(329)x=2(330)x=7(331)x=32(332)x=6(333)x=4.4(334)x=0.4(335)x=5(336)x=0.5(337)x=40(338)x=10(339)x=0.7(340)x=22(341)x=2(342)x=0.3(343)x=18(344)x=3(345)x=18(346)x=1.7(347)x=0.3(348)x=99(349)x=0.3(350)x=4(351)x=0.4(352)x=5.6(353)x=9(354)x=9(355)x=13(356)x=12(357)x=0.9(358)x=4(359)x=20(360)x=6(361)x=37(362)x=2(363)x=39(364)x=1.1(365)x=3(366)x=4.9(367)x=2(368)x=4(369)x=35(370)x=3.8(371)x=4.9(372)x=14(373)x=28(374)x=6(375)x=192(376)x=16(377)x=16(378)x=9(379)x=6(380)x=4.7(381)x=21(382)x=16(383)x=0.2(384)x=91(385)x=35(386)x=9(387)x=36(388)x=4(389)x=2(390)x=4(391)x=9.9(392)x=72(393)x=3.5(394)