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)x-7=42(2)2(1.8x+2)=11.2(3)22x=88(4)33x=66(5)5.1x+6x+0.2=133.4(6)3x=102(7)10x+22×2=94(8)14x-5x+41=158(9)(4.6x-2.8)÷32=2.5(10)22x+33x+3.5=152(11)87-x=64(12)3(1.2x-6.1)=32.1(13)3x+4.2=21.6(14)(3.2x+4.3)÷7=6.1(15)43-x=34(16)6x=19.8(17)2+x=9.4(18)6x+40×3=144(19)7.9x+2.4x=103(20)x+1.8=2.4(21)84+x=166(22)0.2x+2.2=14.8(23)50+x=110(24)38x-16x+4.8=62(25)(3.5x-0.5)÷30=2.2(26)18.2-0.7x=14.7(27)44x-4=4.8(28)2x+8x+3.8=72.8(29)2x=8.4(30)2x÷13=1(31)(1.2x+6)÷28=0.9(32)8.6x+7.8x=147.6(33)5.3x-0.3x-3.3=26.7(34)3x-59=76(35)11.8+13x=24.8(36)x-0.5=8.7(37)140÷x=10(38)x+13=73(39)3.1x-1x+4.1=23(40)10x+55=105(41)1x-1.5=13.5(42)(2.5x-1)÷11=1.5(43)x+7=13(44)x-3.5=5.2(45)42x-5×0.2=7.4(46)4x-5.7=11.5(47)68x-30x+0.4=49.8(48)(16x-6)÷2=125(49)96x+62x+4.8=147(50)25x+44x+4.8=73.8(51)96x=192(52)7.1+5x=17.1(53)53x+25=131(54)14x+9x=69(55)15.2-38x=7.6(56)5.3x-1.5x-2.4=16.6(57)8(24x-37)=88(58)2.1x+1.6×12=33.9(59)7.3x+4.2=18.8(60)3(2x+16)=66(61)3.8+0.7x=18.5(62)8x+19x=135(63)2.3x÷2=4.6(64)20x-47=33(65)26x+16=172(66)5.9x+0.8x+1.5=21.6(67)19.1-0.7x=6.5(68)39x-21=174(69)90x+39=219(70)20x=160(71)88+87x=262(72)2.6x-1.7x+0.5=24.8(73)8x-5x+7=28(74)2(2x-3)=54(75)4x+4.6=19(76)2x-0.5×8=2(77)7.5-x=4.8(78)2x-28=62(79)x-6.3=2(80)19x-12x-35=28(81)x+60=151(82)80x-48x-3.6=2.8(83)(8x+28)÷36=5(84)8.2÷x=0.2(85)12x-5x+4=18(86)x÷10=4(87)2(29x+2)=120(88)32x=160(89)5.1+5.9x=16.9(90)11.1-23x=6.5(91)2(0.6x+7.4)=24.4(92)3.4÷x=1.7(93)50x+34x+2.9=103.7(94)38+x=69(95)45x+37x-4.2=110.6(96)37x-22x-1.6=32.9(97)7.8x-5.4x+4.1=16.1(98)5x+12×0.3=23.6(99)14.9-6x=5.3(100)97x-4x+2.9=77.3(101)68-x=30(102)109+20x=249(103)75-4x=11(104)0.2x-3.1=14.9(105)4.3+x=9.8(106)2x+4×7=78(107)3x+57=120(108)5(x-0.7)=11.5(109)154÷x=22(110)186-9x=69(111)2.3x÷46=0.3(112)2x+5x+42=252(113)6.6x-4x-4.6=8.4(114)x÷3=2.7(115)8.5x-3.7x-1.4=22.6(116)2(6x+11)=46(117)8.2+6x=16.6(118)0.4x÷25=0.8(119)1.9x-0.2x+3.8=44.6(120)4x-2x+31=57(121)6x+10x-2.4=127.2(122)10x-4x-16=50(123)4x-2x=72(124)18.8÷x=0.4(125)11.9-0.5x=8.4(126)7x+3x+4=274(127)8x-4x+41=141(128)120-6x=108(129)10x-32×0.5=1(130)0.7x-0.4×15=10.8(131)68-x=23(132)6.4+x=10.6(133)16x+5x-45=102(134)20x÷10=0.6(135)0.2x=10.8(136)4.6+x=12.2(137)1.1x+3.4×3=17.9(138)61x-5.1=7.1(139)2.2+x=9.3(140)7.1+5x=27.1(141)4x+2.4=3.2(142)0.3x-1.4×2=4.7(143)97x=19.4(144)3.2÷x=0.8(145)(5x+36)÷4=19(146)16x-5x-0.9=54.1(147)3.9x-0.2x-2.9=45.2(148)32-x=24(149)14-42x=1.4(150)1.6x-4.2=8.6(151)54x+31x-2.4=23.1(152)2.7x+9.5x+2.1=63.1(153)100÷x=4(154)39x÷15=13(155)(9x-6)÷2=60(156)4.8x-0.2×35=12.2(157)9x÷18=1(158)(5.6x+1.4)÷2=42.7(159)(15x+45)÷7=30(160)x+95=103(161)20x÷50=2(162)6(4x-11)=126(163)45x+54x-4.9=104(164)14x-9x-4=36(165)17x+13x+20=170(166)x÷8=0.6(167)6(1.3x-7.6)=40.2(168)2x-0.2×22=13.6(169)0.9x+7.3x-3.4=78.6(170)(6.5x-2.4)÷12=6.3(171)147÷x=49(172)0.3x-1.4=5.8(173)5(1.3x-6.2)=40.5(174)x+8=15.2(175)5x+7x+6=138(176)4x+4.6=15.4(177)3x+69×2=243(178)x+0.9=10.8(179)3x-54=117(180)19.2÷x=0.4(181)21x-3.3=15.6(182)16x-9x=70(183)80-x=52(184)33x+23×0.6=20.4(185)0.3x÷6=1.7(186)0.6x+0.6×24=27(187)1.3x+5.1=19.4(188)19x-3x+31=95(189)x-0.5=2.8(190)6x+7x+17=160(191)118+38x=308(192)6x+19x=200(193)39+20x=119(194)x+11=16(195)19.9-1.1x=4.5(196)16÷x=2(197)3x-10×11=25(198)8x-5x+15=27(199)8.7+14x=14.3(200)5.3x=15.9(201)2x÷43=4(202)23(0.5x-6)=34.5(203)16x+17x+10=175(204)19x-41=92(205)9x+18x+23=158(206)x-52=10(207)15x+3x+41=257(208)23+x=66(209)(8.7x+6.8)÷2=38.2(210)x-5.9=3.6(211)(9x+21)÷2=114(212)0.8x+1.3×9=24.5(213)1.8x-0.2x+1.9=77.1(214)5x-2x-25=38(215)6.7-x=4.9(216)96x-9x-4.9=12.5(217)42x+67x-1=20.8(218)89x-4x-1.6=57.9(219)4.6x+3=21.4(220)4x-3×2.3=7.5(221)3.9x-3.7x=2.2(222)89-4x=49(223)7.9+8.8x=25.5(224)x-65=10(225)22x-18x+3.2=8(226)51+x=107(227)35x+33x+2.6=104.6(228)(9.3x-7.2)÷27=1.8(229)71-x=56(230)17x-2×0.9=5(231)x÷4=0.6(232)x÷6=4(233)5.5-x=5.1(234)14x+5×29=243(235)126-5x=21(236)5x-12×0.3=1.4(237)6.2x+4.2=22.8(238)x÷26=7(239)7.5x+9.7x=154.8(240)8.2-x=3.8(241)18x+11×1.3=23.3(242)(6x-44)÷32=2(243)1.5x+0.7x-2.8=23.6(244)0.6x+1.8x+2=6.8(245)4.1x+8.1x+4.5=150.9(246)44x+31x-0.6=81.9(247)13x+24×0.3=16.3(248)4.3x-3.6x+0.9=15.6(249)60x-18=102(250)2x-13=57(251)9x+7x=144(252)16x÷2=4.8(253)44x-4.4=8.8(254)3.8+x=7.5(255)1x+0.4×42=19.8(256)44x-17x+4=33.7(257)0.7x=16.8(258)9.9+0.2x=19.5(259)x÷4=8(260)1.1x-0.3×32=1.4(261)6.2x+6.3x=62.5(262)72+x=162(263)5x-2×29=17(264)56-x=20(265)x÷77=2(266)8.5+x=14.5(267)15x+12x-28=80(268)39x-3x+2.6=45.8(269)x÷6=23(270)0.2x=18.6(271)19x-4x=105(272)1.5x+2.4x-4.8=139.5(273)2.8x-2.9×3=5.3(274)(13x-41)÷6=4(275)x÷5=3.9(276)3(x+42)=153(277)9.7x-5.4x=17.2(278)10x+28×0.4=24.2(279)4.6÷x=2.3(280)195-20x=15(281)6x+3x+14=50(282)24(2.4x-6.1)=26.4(283)0.5x+0.9x-0.4=87.8(284)x+5.6=9.9(285)79-x=56(286)2(0.9x+4.6)=20(287)34x+7×0.3=15.7(288)x+1.5=11(289)(7.4x-0.8)÷17=3(290)7x-4x=63(291)2.6x+9.2x=94.4(292)12x-47×2=98(293)(5.3x+4.5)÷12=7(294)2.1x+5.5x-3.7=102.7(295)2(0.6x+3.5)=37(296)34x+6x-2.7=25.3(297)5.5x-2.4x=31(298)125÷x=5(299)4(2x+6)=64(300)5x+2×1.8=19.6(301)9.8x-4.4x=32.4(302)0.2x+5.4=10.4(303)5.6x÷6=2.8(304)9.2x-1.6x-4.5=10.7(305)x÷43=0.3(306)5.1x+3.5x-4.6=158.8(307)8x+6x=126(308)4(x-11)=92(309)1.7x-5.1=8.5(310)2.9x+2.4x+4.9=68.5(311)1x+0.7×20=29(312)14x=19.6(313)72x-49x+1.1=8(314)x÷7=1.8(315)17x+7x-22=50(316)18.1-9x=16.3(317)x+4.1=7.6(318)3.1x-1.5x-2.7=10.1(319)(4.1x+8.4)÷2=32.9(320)(2x+38)÷6=7(321)(7.6x+1.2)÷10=6.2(322)15x+10x-47=178(323)3x÷21=8(324)5x-2×4.3=2.9(325)3.4x=17(326)18x+11×13=305(327)x-1.4=4.7(328)7x-4x=42(329)3.8x+6.8x+0.5=95.9(330)12(x-23)=132(331)11x-3x-44=68(332)77+2x=215(333)30+x=104(334)2x=70(335)4x+2x-14=214(336)x-5.7=3.6(337)0.9x+2.2x=105.4(338)(15x-9)÷4=9(339)x÷64=3(340)8+4x=23.2(341)42x+18=144(342)22x÷4=1.1(343)3.2+1.5x=18.2(344)160-4x=144(345)2(x+37)=156(346)4.1x+2x-2.5=95.1(347)4x=16.8(348)24x-5×3.1=1.3(349)18.3+0.6x=23.1(350)1.1x+1.3×9=18.3(351)2.4x+6.3x-2=102.4(352)11x-5×21=38(353)(2.8x+8.2)÷6=6.5(354)4x+5x=54(355)7.2-x=6.8(356)0.9x+5.7=13.8(357)5(x+14)=100(358)4x÷90=2(359)13.8÷x=0.3(360)4x+4.3=17.1(361)73+20x=133(362)0.2x-1.5×2=5.2(363)14x-3x-0.8=46.5(364)3.3x÷6=2.2(365)(2x-2)÷44=1(366)(6x-14)÷26=5(367)8x-2x=84(368)11x-4.9=7.2(369)4x+5.3=17.3(370)8x÷6=2(371)84÷x=4(372)4x÷92=2(373)84x÷14=1.2(374)4.9x-2.5x+1.8=23.4(375)13x-33×0.2=3.8(376)9x-14×2=98(377)(17x-19)÷2=50(378)29+85x=199(379)(3x+45)÷3=17(380)144+2x=196(381)3.5+1x=21.5(382)2(23x+9)=110(383)4.2x-3.5=9.1(384)1.8x=10.8(385)x+8.1=14.6(386)2(6x-42)=144(387)8x-3x=20(388)30x-5x+0.4=17.9(389)4x+45×4=360(390)8.7x-1.6x=35.5(391)6.5x-2.6x-4.1=50.5(392)4(27x-26)=112(393)x-23=23(394)0.5x-0.3x+0.3=19.9(395)7-x=3.1(396)57x-41x+4.8=16(397)0.5x+0.2×42=21.9(398)14.8-0.2x=11.4(399)1.2x+5.7=21.3(400)x+94=185(401)18x+19x-26=307(402)12x+14x=338(403)91÷x=13(404)(x+30)÷3=16(405)x÷6=29(406)4x+9x-38=118(407)37x=111(408)14x-11x+35=71(409)16(4.5x-5.9)=49.6(410)13x-9x-9=19(411)4.5x=9(412)18x-13x=40(413)(11x+31)÷3=91(414)72+4x=108(415)2.5x+3.5x-1.8=106.2(416)3x÷22=6(417)12.3-5.2x=1.9(418)(19x+20)÷7=11(419)5x-2.8=11.7(420)196-3x=175(421)7(x-16)=105(422)6x+52×3=252(423)x-1.4=5.4(424)7.4÷x=0.2(425)x÷5=3.5(426)12.4+8.7x=29.8(427)177-52x=73(428)42x-23x-2.3=11(429)x-3=36(430)3(3.5x+2.6)=28.8(431)4.8x-0.2×14=16.4(432)4x+7.4x=45.6(433)x+9.2=16(434)11.7+1.4x=28.5(435)96+x=143(436)2x+1.2=10.2(437)73x-25x-2=60.4(438)7x-1.6=7.5(439)9.8-9x=5.3(440)x-10=45(441)1x+0.6×25=31(442)68x+52x-0.8=35.2(443)x+45=98(444)6.6x-1.8=11.4(445)(1.8x-8.4)÷2=10.2(446)5x+2.4x+2.8=25(447)x+0.5=2.3(448)3(0.5x+5.5)=43.5(449)2x+3x=275(450)13(0.8x-7.4)=18.2(451)60x+80x-3=123(452)2x-3×14=150(453)0.9x=2.7(454)10x÷15=0.6(455)6.9x+4=17.8(456)6(14x-15)=162(457)50x+35x+2.9=36.9(458)13x=2.6(459)28x-4×24=72(460)12x-6×3=90(461)40x+2x+2.6=107.6(462)1.4x-0.9x=33(463)x+99=156(464)4x-4×22=36(465)6.5x-0.8x+2.5=36.7(466)(4x-31)÷21=1(467)x+14=18(468)18x-8x-49=41(469)9.2÷x=2.3(470)x÷11=8(471)5.4x-4.7x=2.8(472)3x÷6=1.9(473)14x-12x+39=61(474)5x-3x=20(475)2x=118(476)13.5-0.2x=8.5(477)8.5+51x=23.8(478)9.4-x=4.5(479)3x+23=62(480)(4.5x+7.7)÷14=2.8(481)(5.6x-4.4)÷2=45.4(482)9.4x-2.2x-2.2=33.8(483)13.6-4x=4(484)18x=7.2(485)x÷3=0.8(486)0.2x-2=7.2(487)6(6.8x-6.6)=42(488)6.5-x=5.9(489)9x+2x=33(490)16x-24=152(491)14x÷16=7(492)18x-6x-3=105(493)13.4+2x=25.4(494)4x-4.9=9.9(495)(7.7x-9)÷4=17(496)11.6-3.5x=4.6(497)5x+12x=255(498)17.8-20x=11.8(499)2(1.3x+2.3)=30.6(500)9x+7x-22=170(501)21x-4×3.4=1.1(502)20x+4×2=20(503)4(0.9x+0.7)=20.8(504)92÷x=4(505)42x+3×3.5=27.3(506)32x÷4=1.6(507)x-1.6=8.1(508)1.1x=6.6(509)24x=7.2(510)9.3-x=5.9(511)5+x=7.9(512)17x-3x-17=11(513)5(x+3)=190(514)8x+5.7=17.7(515)3x+12x-36=174(516)29x+31=89(517)6x+2.6=6.2(518)2+x=59(519)24x-21x-0.4=9.8(520)7.9+x=16.9(521)5.1x-1.2x=11.7(522)6.4+4x=11.6(523)2.8-3x=1.6(524)6.4x÷24=0.8(525)x-3=71(526)23x+30×3=182(527)7x÷42=4(528)51x+26=128(529)0.2x÷17=0.4(530)22x+2x+1.9=83.5(531)18.9-0.6x=6.3(532)6.8x-3.4x=20.4(533)x-20=43(534)0.8x-4=11.2(535)1.4x+5x+0.6=19.8(536)49x=14.7(537)3(3.1x+8.5)=44.1(538)3.2x+1.3x=121.5(539)x÷6=2.7(540)x-67=21参考答案(1)x=49(2)x=2(3)x=4(4)x=2(5)x=12(6)x=34(7)x=5(8)x=13(9)x=18(10)x=2.7(11)x=23(12)x=14(13)x=5.8(14)x=12(15)x=9(16)x=3.3(17)x=7.4(18)x=4(19)x=10(20)x=0.6(21)x=82(22)x=63(23)x=60(24)x=2.6(25)x=19(26)x=5(27)x=0.2(28)x=6.9(29)x=4.2(30)x=6.5(31)x=16(32)x=9(33)x=6(34)x=45(35)x=1(36)x=9.2(37)x=14(38)x=60(39)x=9(40)x=5(41)x=15(42)x=7(43)x=6(44)x=8.7(45)x=0.2(46)x=4.3(47)x=1.3(48)x=16(49)x=0.9(50)x=1(51)x=2(52)x=2(53)x=2(54)x=3(55)x=0.2(56)x=5(57)x=2(58)x=7(59)x=2(60)x=3(61)x=21(62)x=5(63)x=4(64)x=4(65)x=6(66)x=3(67)x=18(68)x=5(69)x=2(70)x=8(71)x=2(72)x=27(73)x=7(74)x=15(75)x=3.6(76)x=3(77)x=2.7(78)x=45(79)x=8.3(80)x=9(81)x=91(82)x=0.2(83)x=19(84)x=41(85)x=2(86)x=40(87)x=2(88)x=5(89)x=2(90)x=0.2(91)x=8(92)x=2(93)x=1.2(94)x=31(95)x=1.4(96)x=2.3(97)x=5(98)x=4(99)x=1.6(100)x=0.8(101)x=38(102)x=7(103)x=16(104)x=90(105)x=5.5(106)x=25(107)x=21(108)x=3(109)x=7(110)x=13(111)x=6(112)x=30(113)x=5(114)x=8.1(115)x=5(116)x=2(117)x=1.4(118)x=50(119)x=24(120)x=13(121)x=8.1(122)x=11(123)x=36(124)x=47(125)x=7(126)x=27(127)x=25(128)x=2(129)x=1.7(130)x=24(131)x=45(132)x=4.2(133)x=7(134)x=0.3(135)x=54(136)x=7.6(137)x=7(138)x=0.2(139)x=7.1(140)x=4(141)x=0.2(142)x=25(143)x=0.2(144)x=4(145)x=8(146)x=5(147)x=13(148)x=8(149)x=0.3(150)x=8(151)x=0.3(152)x=5(153)x=25(154)x=5(155)x=14(156)x=4(157)x=2(158)x=15(159)x=11(160)x=8(161)x=5(162)x=8(163)x=1.1(164)x=8(165)x=5(166)x=4.8(167)x=11(168)x=9(169)x=10(170)x=12(171)x=3(172)x=24(173)x=11(174)x=7.2(175)x=11(176)x=2.7(177)x=35(178)x=9.9(179)x=57(180)x=48(181)x=0.9(182)x=10(183)x=28(184)x=0.2(185)x=34(186)x=21(187)x=11(188)x=4(189)x=3.3(190)x=11(191)x=5(192)x=8(193)x=4(194)x=5(195)x=14(196)x=8(197)x=45(198)x=4(199)x=0.4(200)x=3(201)x=86(202)x=15(203)x=5(204)x=7(205)x=5(206)x=62(207)x=12(208)x=43(209)x=8(210)x=9.5(211)x=23(212)x=16(213)x=47(214)x=21(215)x=1.8(216)x=0.2(217)x=0.2(218)x=0.7(219)x=4(220)x=3.6(221)x=11(222)x=10(223)x=2(224)x=75(225)x=1.2(226)x=56(227)x=1.5(228)x=6(229)x=15(230)x=0.4(231)x=2.4(232)x=24(233)x=0.4(234)x=7(235)x=21(236)x=1(237)x=3(238)x=182(239)x=9(240)x=4.4(241)x=0.5(242)x=18(243)x=12(244)x=2(245)x=12(246)x=1.1(247)x=0.7(248)x=21(249)x=2(250)x=35(251)x=9(252)x=0.6(253)x=0.3(254)x=3.7(255)x=3(256)x=1.1(257)x=24(258)x=48(259)x=32(260)x=10(261)x=5(262)x=90(263)x=15(264)x=36(265)x=154(266)x=6(267)x=4(268)x=1.2(269)x=138(270)x=93(271)x=7(272)x=37(273)x=5(274)x=5(275)x=19.5(276)x=9(277)x=4(278)x=1.3(279)x=2(280)x=9(281)x=4(282)x=3(283)x=63(284)x=4.3(285)x=23(286)x=6(287)x=0.4(288)x=9.5(289)x=7(290)x=21(291)x=8(292)x=16(293)x=15(294)x=14(295)x=25(296)x=0.7(297)x=10(298)x=25(299)x=5(300)x=3.2(301)x=6(302)x=25(303)x=3(304)x=2(305)x=12.9(306)x=19(307)x=9(308)x=34(309)x=8(310)x=12(311)x=15(312)x=1.4(313)x=0.3(314)x=12.6(315)x=3(316)x=0.2(317)x=3.5(318)x=8(319)x=14(320)x=2(321)x=8(322)x=9(323)x=56(324)x=2.3(325)x=5(326)x=9(327)x=6.1(328)x=14(329)x=9(330)x=34(331)x=14(332)x=69(333)x=74(334)x=35(335)x=38(336)x=9.3(337)x=34(338)x=3(339)x=192(340)x=3.8(341)x=3(342)x=0.2(343)x=10(344)x=4(345)x=41(346)x=16(347)x=4.2(348)x=0.7(349)x=8(350)x=6(351)x=12(352)x=13(353)x=11(354)x=6(355)x=0.4(356)x=9(357)x=6(358)x=45(359)x=46(360)x=3.2(361)x=3(362)x=41(363)x=4.3(364)x=4(365)x=23(366)x=24(367)x=14(368)x=1.1(369)x=3(370)x=1.5(371)x=21(372)x=46(373)x=0.2(374)x=9(375)x=0.8(376)x=14(377)x=7(378)x=2(379)x=2(380)x=26(381)x=18(382)x=2(383)x=3(384)x=6(385)x=6.5(386)x=19(387)x=4(388)x=0.7(389)x=45(390)x=5(391)x=14(392)x=2(393)x=46(394)x=98(3