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(2.5x+1.1)=25.8(2)(13x+37)÷11=14(3)5.1x+3.3x=67.2(4)0.3x÷6=2.6(5)x-44=37(6)6.5+x=9.4(7)(2.5x+6.2)÷9=1.8(8)15x-10x-5=15(9)22x-2×14=60(10)9.9+5x=18.4(11)2(7x-21)=140(12)4.6x+6.3x=76.3(13)14-7x=3.5(14)(5.5x+6.5)÷2=22.5(15)48x+34x+4.2=160(16)15x÷5=33(17)0.2x+5.1=10.3(18)18x+22×5=290(19)49x-22x+4.7=18.2(20)4.1x-1.2x+2=39.7(21)21x-18x-4.9=3.5(22)10x+2x+9=45(23)12x+2x-3=95(24)14x-6x+34=130(25)(11x-15)÷10=15(26)1.9x+5.7x+2.5=32.9(27)1.6x+0.4×7=14(28)17.1-0.5x=8.6(29)6.8x-0.3x-1=77(30)13x+9×6=249(31)42x-6x-0.3=71.7(32)0.4x+1.8=17(33)8x=18.4(34)8(2x-5)=104(35)5x÷4=2.5(36)x÷7=12(37)1.9x-0.6x=67.6(38)0.6x+4.7×2=16.6(39)x÷9=22(40)33x-16=50(41)13.5÷x=4.5(42)13x+49×4=222(43)68÷x=17(44)47x+61x-0.4=161.6(45)4.8x-0.5x=81.7(46)2.6x+4.3=17.3(47)0.6x-1.6=5(48)(7x+40)÷46=3(49)0.4x+0.9x=14.3(50)61x+19x-4.6=75.4(51)5x+2x+30=282(52)7.5x-2.8x-2.7=30.2(53)34x+27x+1.5=80.8(54)0.3x+0.4×46=24.1(55)x+75=109(56)57+x=116(57)3.4-x=2(58)45+x=115(59)17-2.8x=3(60)8x÷56=0.3(61)9x-48=87(62)22x+24x+1.2=38(63)x÷15=0.4(64)162-17x=111(65)1.9x+0.2×6=6.9(66)(4.8x-8)÷32=0.5(67)15x+6×1.6=26.1(68)50x+85x+3=57(69)92÷x=46(70)1.9-x=1(71)97x-39=155(72)76-x=32(73)7.5+x=11.7(74)x-59=15(75)19x-7x-22=50(76)25x-5×0.7=16.5(77)80+7x=101(78)1.3x-0.2×14=12.8(79)(6.1x+7.8)÷5=10.1(80)0.5x=18.5(81)7(1.8x-9.3)=48.3(82)185-8x=129(83)91x-65x+3=21.2(84)87-x=20(85)5.7-x=4.9(86)x-10=12(87)0.2x=14.2(88)3x+2.9=16.7(89)5x÷3=1(90)x÷33=0.3(91)8x+9×1.9=21.1(92)2x÷16=1.2(93)0.2x+3=18(94)5x-2.2=2.8(95)6x-4x+30=40(96)59-x=21(97)54x+18=126(98)193-3x=16(99)3x+5.5=18.1(100)7x=42(101)8.8x+3.1x=130.9(102)68-8x=20(103)5(6x+2)=160(104)x÷10=1.2(105)26x-6×1.5=1.4(106)6.9x-3.6x+3.6=20.1(107)7.8x-3.8=11.8(108)54x=16.2(109)95x-61x-2.5=11.1(110)17x-4x-2=37(111)7.4x-3.8x=14.4(112)60x-22x-3.4=23.2(113)12.8+42x=21.2(114)17.5+10x=35.5(115)93x+15x-3.8=104.2(116)9.6-x=3.6(117)16.8-1.5x=13.8(118)2.8x+6.3x+2.9=130.3(119)10x=10(120)35x+42=112(121)11(3x+2)=88(122)7.3x-2.5x=14.4(123)4x+6.3x-1.1=101.9(124)2.9+x=8.6(125)3(10x-4)=48(126)x+38=103(127)41x+8x+1=99(128)5(5x+4)=145(129)2(6.7x-7.3)=12.2(130)8.7x-3.6x+3.6=24(131)2.7x-0.2×16=4.9(132)8(x+13)=152(133)(17x+2)÷10=24(134)81x-10x+2.5=30.9(135)0.5x÷3=3.5(136)15x÷90=2(137)9(5x-18)=198(138)2(1.4x+5.8)=45.2(139)78+x=89(140)65+6x=113(141)5x-36=134(142)0.2x=5.2(143)0.5x-0.3×12=12.9(144)6x-15×0.2=4.8(145)5x+15x=220(146)5.6x-1.7x-0.6=26.7(147)16x-9x=56(148)(15x-3)÷3=74(149)7+2x=11.4(150)6x+8x+30=240(151)9(4x-44)=180(152)x+74=89(153)10.4+0.7x=16(154)x-39=27(155)42x-15×0.4=2.4(156)9x-8.1x=6.3(157)8.5x+2.6x-2.5=64.1(158)9x=2.7(159)0.7x+1.5x+3.3=34.1(160)6x+48=78(161)38x=190(162)(2.8x-1)÷6=4.5(163)0.9x-1.5×6=8.1(164)x÷13=1.2(165)5x+6.9x=23.8(166)10x÷5=38(167)5x=180(168)0.4x=14(169)x+4.8=11(170)6x=66(171)1.3x+0.7x-4.2=23.8(172)9.3+0.3x=25.5(173)56x-25x+4.3=44.6(174)8x+7x=360(175)19.4+46x=33.2(176)0.2x÷12=0.8(177)6.1+x=9.5(178)4.6+x=6.1(179)11x+3×61=315(180)16.2÷x=1.8(181)x+56=70(182)182-36x=38(183)31x-7x+0.7=29.5(184)(14x-49)÷21=5(185)2x+22=42(186)13(x-18)=130(187)0.4x+5.4=7.4(188)5.4-x=1.8(189)(4x+31)÷9=7(190)0.4x-4.3=11.3(191)10x÷2=1.5(192)8.6-x=6.5(193)16x+4×0.5=19.6(194)17x+18x=280(195)2(x+44)=182(196)5x=20(197)9.9÷x=0.9(198)5.7x+9.8x+1=94(199)8x-2x+5=143(200)2x+18×0.6=17.8(201)4.2+5x=23.7(202)(15x-24)÷12=18(203)121+5x=206(204)0.2x+0.4×20=15.2(205)0.3x=18.6(206)x+3.8=10.7(207)17x-11x-3=21(208)9x-2×15=96(209)2(8x+14)=124(210)8.7+x=18.5(211)11+x=83(212)10(1.6x-7.7)=19(213)5x÷20=6(214)42x+60x-1.4=121(215)4-x=3.3(216)6.1x-3.1x+4.3=37.3(217)110÷x=5(218)0.2x÷3=3.4(219)x÷3=20(220)5.1x-1.1x+3.9=19.9(221)8x+2.6=9(222)2(3.1x-3.7)=42.2(223)4.2+x=8.2(224)(5.1x-9.3)÷2=18.3(225)0.4x-1.1×5=9.7(226)35x+7x-3.7=42.5(227)60x-23x-4=51.5(228)15x-16×2=148(229)13x-3x+2.8=26.8(230)2x÷8=2.1(231)19x-7x=72(232)37+x=54(233)x÷2=2.2(234)3(x-8)=9(235)2.6x÷12=1.3(236)(19x-5)÷18=5(237)9x-5.1x-2.6=36.4(238)7.8x+2.5x+3.6=106.6(239)18.9-0.4x=2.5(240)9.4x-4.2x=15.6(241)x÷17=1.1(242)32x+6×1.1=25.8(243)x÷6=1.8(244)51+x=147(245)16x-9x=70(246)26x+58=110(247)12x-7x=40(248)5x+8x-35=82(249)10x+15x=50(250)x÷37=4(251)19x-3.5=6(252)9x+10x-38=76(253)11.9-3x=6.5(254)(8.3x+8.9)÷11=7.6(255)0.6x÷3=3.6(256)x-3.6=2.2(257)x-5.3=3.2(258)8+x=14.2(259)4.1x+0.6x+2.3=110.4(260)1.7x+2.2=20.9(261)2x-4.9=12.9(262)4x-5×8=144(263)0.7x+4.7=13.8(264)23x-48×2=42(265)x÷67=0.2(266)196÷x=14(267)9x-50×2=44(268)15x-9x+48=66(269)4x-0.5×10=11(270)0.7x+3.2x-1.8=80.1(271)2x=16.2(272)9x-28×0.3=1.5(273)11x-7x+1.6=22.8(274)72x-42=102(275)11x+4x=225(276)(11x+29)÷4=54(277)3x+38x-1.3=31.5(278)0.9x-1.2×2=2.1(279)4x+79x-0.9=40.6(280)x-0.3=9(281)12x-4x+1.8=9.8(282)18x-7x-2=42(283)2(0.4x+1.1)=19.8(284)2x+11x+13=234(285)5x-11×0.9=4.6(286)5x+16×3=128(287)(11x-26)÷5=41(288)19.9+4.3x=28.5(289)13.5-2x=6.1(290)3(0.9x+0.4)=14.7(291)x+55=153(292)3x+6x=63(293)0.7x-1.9=7.9(294)15x-11x=48(295)30x÷4=15(296)57+x=89(297)(8.3x-7.7)÷7=7.2(298)9.5x-5.1x-2.3=6.5(299)7x+2.7=19.5(300)14x-1.7=15.1(301)10.3+1.8x=22.9(302)1.8x+1.1x-2.6=122.1(303)x+4.6=14.3(304)(9.1x-7.4)÷2=5.4(305)6.8-x=4.1(306)0.2x+4x-4.3=29.3(307)2(0.5x+4.2)=35.4(308)82x+84x+2.3=135.1(309)0.2x+1.8=16.6(310)x+3.1=12.5(311)41-x=33(312)x÷2=16(313)2x+3×34=184(314)6.5÷x=1.3(315)84÷x=28(316)61+x=89(317)3x-0.7x+0.6=46.6(318)0.4x-1.2=6.4(319)(0.7x-5.4)÷11=0.4(320)5.1x-3.5x-4.7=3.3(321)10x-3.5=8.5(322)0.2x+0.3×43=20.9(323)(7x-49)÷14=7(324)3x+2x=125(325)x+5.6=14(326)23x+34=172(327)138÷x=2(328)18.6-2.4x=9(329)9.5+26x=25.1(330)7.7+2.3x=14.6(331)15x-2x-25=14(332)2(2x+28)=152(333)19(1.5x-3.2)=24.7(334)(x-8)÷16=0.5(335)14.4÷x=0.2(336)18.7-0.3x=16(337)x+4.9=12(338)10x+36=76(339)0.3x+0.6x+0.5=72.5(340)7.4÷x=0.2(341)18÷x=0.4(342)38÷x=2(343)x+3=9.3(344)178-16x=98(345)1.6x=3.2(346)16x-5x+13=79(347)48+x=70(348)1.4x+0.4x=16.2(349)5x-13×3=116(350)x+5=37(351)9x÷4=27(352)8x+16x-20=244(353)8x-2x-19=107(354)74+2x=266(355)19.1-2x=8.7(356)7x-3x+44=136(357)13x+7x+9=249(358)45x=135(359)x÷31=4(360)1.1x+2.6=18(361)1.6x-1x-4.2=3.6(362)x-3.8=5.2(363)10x-59=71(364)(9x+18)÷4=45(365)62-x=10(366)9.8x-7.4x+0.8=12.8(367)3x-2.8x+0.8=2.2(368)19x+21×3=196(369)18x-9x=63(370)(5x+29)÷22=7(371)4(0.3x+3.7)=40(372)x+6.4=10.7(373)2.6x-1.6x=13(374)17x-30×0.3=6.3(375)16x-1.5=8.1(376)7x+44=107(377)x-0.8=4.2(378)199+14x=311(379)0.2x+1.5x+4.6=84.5(380)7x-9×1.1=5.5(381)4x+5x+27=81(382)19.6-4x=17.6(383)108÷x=2(384)0.3x-0.3×34=3.6(385)18x+7x-38=187(386)21+30x=201(387)20x+6x+1.7=108.3(388)17x-13=123(389)5(1.2x-9.5)=24.5(390)1.3x=10.4(391)4.2+5x=7.2(392)34x-15x+3.7=7.5(393)87-11x=43(394)9x+15x=120(395)28x+68x+3.6=32.4(396)(5.3x+5.9)÷15=6.4(397)8x+6x-32=164(398)2(5x-36)=68(399)1.7x+1.9x-2.6=87.4(400)13.7-2x=11.1(401)1.7x+0.7×26=30.1(402)4x=188(403)14x-5x+31=67(404)24x+9×0.5=16.5(405)28x+3.5=23.1(406)x÷22=0.2(407)x+0.4=3.5(408)8.6x-3.6x=25(409)(4x+9.4)÷2=14.7(410)x-5=2.2(411)13-2.1x=4.6(412)71+3x=212(413)2x÷4=2.5(414)32x+5×2.3=21.1(415)13.5+0.4x=18.7(416)38x=11.4(417)17.6-31x=11.4(418)31x+24×0.2=17.2(419)2(0.6x+5.3)=15.4(420)7x÷49=3(421)x-78=17(422)16x-4×11=148(423)17.2-1.7x=1.9(424)4x+5x+15=339(425)17.7-5x=3.7(426)18x-2x-44=20(427)12x+8x+30=250(428)8x-2x=96(429)x+37=82(430)1.8x÷9=2(431)64x-20x-4.2=26.6(432)2(0.2x+3.2)=25.2(433)67-x=59(434)(7x-32)÷13=11(435)0.3+x=8.4(436)5.1x-1.6x=52.5(437)63x=126(438)(2x+1)÷26=1.5(439)198-11x=154(440)(3.4x+0.6)÷8=3.9(441)1.2+2.2x=18.8(442)x-1=5.9(443)170+2x=338(444)77-x=38(445)2x+29=175(446)x-16=53(447)2.3x+3.3×6=38.2(448)2x+4.3=13.3(449)7x+17x-9=135(450)12.5÷x=2.5(451)x-7=11(452)(3x+26)÷5=22(453)0.6x+4.8×4=36(454)3x-26=31(455)5.6x+4.3x-0.3=138.3(456)6.2x-5.4x-4.1=4.7(457)15+5x=80(458)172-10x=72(459)2(13x-48)=138(460)1x-2.1=6.9(461)8x÷16=3(462)3x+7×27=345(463)(5.9x-8.9)÷3=28.5(464)3x÷20=0.9(465)85x-28x-4.6=52.4(466)30x+35x-1.9=141.1(467)14x=12.6(468)0.4x-2.1=7.9(469)8.5x+2.2x-4=60.2(470)4.8+6.4x=24(471)2x+5x=126(472)3.5+28x=23.1(473)10x+1.3=4.3(474)2(2x+33)=162(475)56x-35x-3.2=17.8(476)154÷x=22(477)11x+19x+16=76(478)8x=5.6(479)17.4÷x=0.6(480)0.5x+3x=98(481)2(x+49)=154(482)3.5x-1.6x+2.6=25.4(483)82x+74x-0.7=61.7(484)(8x-18)÷15=2(485)x+77=122(486)7.5x-6.2x-3.1=6(487)x+50=60(488)0.2x-4.4=8.4(489)98-x=57(490)16.1-2.7x=8(491)2x+15×0.3=13.7(492)x-3=6.3(493)94x+1.6=20.4(494)4.6x=18.4(495)16x+12x-22=230(496)x÷9=12(497)13x-6x+48=69(498)0.8x÷68=0.2(499)15x-12x=12(500)7x-3×4.8=1.7(501)x-6.3=3(502)8.7+2.3x=24.8(503)4x-8×4=20(504)x-19=77(505)2.1x-5.7=2.7(506)23(0.5x-5.9)=36.8(507)41x-4=4.2(508)4x=8(509)87-x=84(510)13x+12×11=210(511)10x-8x+35=67(512)4x=18.4(513)x-7=39(514)10x-5x-8=62(515)2x÷8=12(516)72x-58x-1.1=1.7(517)24x÷36=0.4(518)2(5x-5)=70(519)1.1x+8.2x=74.4(520)x÷2=33(521)4.5x-3.2×3=8.4(522)(4.2x+1.2)÷18=3.8(523)7x-12=58(524)(2x-6.5)÷7=2.5(525)14x-3.2=5.2(526)8.1-x=4.5(527)5(3.8x-2.7)=43.5(528)6x÷15=0.4(529)18x+13x-37=87(530)56x+3.4=14.6(531)10x-4x=72(532)14.7-11x=8.1(533)2x+1.2x=115.2(534)x÷62=2(535)2(5.2x+4.1)=49.8(536)35x+79x+1.5=47.1(537)2.1x+2.3x+4.7=154.3(538)18x=36(539)(2x+28)÷26=3(540)8x-5.2=4.4参考答案(1)x=3(2)x=9(3)x=8(4)x=52(5)x=81(6)x=2.9(7)x=4(8)x=4(9)x=4(10)x=1.7(11)x=13(12)x=7(13)x=1.5(14)x=7(15)x=1.9(16)x=11(17)x=26(18)x=10(19)x=0.5(20)x=13(21)x=2.8(22)x=3(23)x=7(24)x=12(25)x=15(26)x=4(27)x=7(28)x=17(29)x=12(30)x=15(31)x=2(32)x=38(33)x=2.3(34)x=9(35)x=2(36)x=84(37)x=52(38)x=12(39)x=198(40)x=2(41)x=3(42)x=2(43)x=4(44)x=1.5(45)x=19(46)x=5(47)x=11(48)x=14(49)x=11(50)x=1(51)x=36(52)x=7(53)x=1.3(54)x=19(55)x=34(56)x=59(57)x=1.4(58)x=70(59)x=5(60)x=2.1(61)x=15(62)x=0.8(63)x=6(64)x=3(65)x=3(66)x=5(67)x=1.1(68)x=0.4(69)x=2(70)x=0.9(71)x=2(72)x=44(73)x=4.2(74)x=74(75)x=6(76)x=0.8(77)x=3(78)x=12(79)x=7(80)x=37(81)x=9(82)x=7(83)x=0.7(84)x=67(85)x=0.8(86)x=22(87)x=71(88)x=4.6(89)x=0.6(90)x=9.9(91)x=0.5(92)x=9.6(93)x=75(94)x=1(95)x=5(96)x=38(97)x=2(98)x=59(99)x=4.2(100)x=6(101)x=11(102)x=6(103)x=5(104)x=12(105)x=0.4(106)x=5(107)x=2(108)x=0.3(109)x=0.4(110)x=3(111)x=4(112)x=0.7(113)x=0.2(114)x=1.8(115)x=1(116)x=6(117)x=2(118)x=14(119)x=1(120)x=2(121)x=2(122)x=3(123)x=10(124)x=5.7(125)x=2(126)x=65(127)x=2(128)x=5(129)x=2(130)x=4(131)x=3(132)x=6(133)x=14(134)x=0.4(135)x=21(136)x=12(137)x=8(138)x=12(139)x=11(140)x=8(141)x=34(142)x=26(143)x=33(144)x=1.3(145)x=11(146)x=7(147)x=8(148)x=15(149)x=2.2(150)x=15(151)x=16(152)x=15(153)x=8(154)x=66(155)x=0.2(156)x=7(157)x=6(158)x=0.3(159)x=14(160)x=5(161)x=5(162)x=10(163)x=19(164)x=15.6(165)x=2(166)x=19(167)x=36(168)x=35(169)x=6.2(170)x=11(171)x=14(172)x=54(173)x=1.3(174)x=24(175)x=0.3(176)x=48(177)x=3.4(178)x=1.5(179)x=12(180)x=9(181)x=14(182)x=4(183)x=1.2(184)x=11(185)x=10(186)x=28(187)x=5(188)x=3.6(189)x=8(190)x=39(191)x=0.3(192)x=2.1(193)x=1.1(194)x=8(195)x=47(196)x=4(197)x=11(198)x=6(199)x=23(200)x=3.5(201)x=3.9(202)x=16(203)x=17(204)x=36(205)x=62(206)x=6.9(207)x=4(208)x=14(209)x=6(210)x=9.8(211)x=72(212)x=6(213)x=24(214)x=1.2(215)x=0.7(216)x=11(217)x=22(218)x=51(219)x=60(220)x=4(221)x=0.8(222)x=8(223)x=4(224)x=9(225)x=38(226)x=1.1(227)x=1.5(228)x=12(229)x=2.4(230)x=8.4(231)x=6(232)x=17(233)x=4.4(234)x=11(235)x=6(236)x=5(237)x=10(238)x=10(239)x=41(240)x=3(241)x=18.7(242)x=0.6(243)x=10.8(244)x=96(245)x=10(246)x=2(247)x=8(248)x=9(249)x=2(250)x=148(251)x=0.5(252)x=6(253)x=1.8(254)x=9(255)x=18(256)x=5.8(257)x=8.5(258)x=6.2(259)x=23(260)x=11(261)x=8.9(262)x=46(263)x=13(264)x=6(265)x=13.4(266)x=14(267)x=16(268)x=3(269)x=4(270)x=21(271)x=8.1(272)x=1.1(273)x=5.3(274)x=2(275)x=15(276)x=17(277)x=0.8(278)x=5(279)x=0.5(280)x=9.3(281)x=1(282)x=4(283)x=22(284)x=17(285)x=2.9(286)x=16(287)x=21(288)x=2(289)x=3.7(290)x=5(291)x=98(292)x=7(293)x=14(294)x=12(295)x=2(296)x=32(297)x=7(298)x=2(299)x=2.4(300)x=1.2(301)x=7(302)x=43(303)x=9.7(304)x=2(305)x=2.7(306)x=8(307)x=27(308)x=0.8(309)x=74(310)x=9.4(311)x=8(312)x=32(313)x=41(314)x=5(315)x=3(316)x=28(317)x=20(318)x=19(319)x=14(320)x=5(321)x=1.2(322)x=40(323)x=21(324)x=25(325)x=8.4(326)x=6(327)x=69(328)x=4(329)x=0.6(330)x=3(331)x=3(332)x=24(333)x=3(334)x=16(335)x=72(336)x=9(337)x=7.1(338)x=4(339)x=80(340)x=37(341)x=45(342)x=19(343)x=6.3(344)x=5(345)x=2(346)x=6(347)x=22(348)x=9(349)x=31(350)x=32(351)x=12(352)x=11(353)x=21(354)x=96(355)x=5.2(356)x=23(357)x=12(358)x=3(359)x=124(360)x=14(361)x=13(362)x=9(363)x=13(364)x=18(365)x=52(366)x=5(367)x=7(368)x=7(369)x=7(370)x=25(371)x=21(372)x=4.3(373)x=13(374)x=0.9(375)x=0.6(376)x=9(377)x=5(378)x=8(379)x=47(380)x=2.2(381)x=6(382)x=0.5(383)x=54(384)x=46(385)x=9(386)x=6(387)x=4.1(388)x=8(389)x=12(390)x=8(391)x=0.6(392)x=0.2(393)x=4(394)