五年级数学(方程)习题及答案汇编

五年级数学(方程)习题及答案汇编(1)7x+4x+3.1=55.9(2)22x-2×21=90(3)4.7x+4.5x=55.2(4)(5.8x-3)÷2=44.9(5)4.9x-1.8x+0.9=53.6(6)13x+29=55(7)17.2-7.9x=1.4(8)6x-3x+35=59(9)(2.8x-9)÷3=2.6(10)5x+11x+2.8=118(11)18.1-5x=12.6(12)9x-6.2x=28(13)177+2x=201(14)(18x+8)÷20=4(15)7.1x+4.3x-1.8=32.4(16)5x-2×0.3=9.4(17)3x-25×4=56(18)17x-8x+37=82(19)9x+12x+15=78(20)x-14=21(21)8.6+x=13.8(22)7x-38×0.2=2.2(23)11.2-0.3x=10(24)18.9-0.4x=10.5(25)120÷x=20(26)9.2x+8.9x=72.4(27)5x-2x+32=140(28)8x-3x=115(29)59x=177(30)x+64=69(31)1.6x-5.1=7.7(32)9(6x-12)=108(33)45x+50x-1=132(34)5x÷8=10(35)24x÷36=2(36)4.8x+8.3x-1.4=116.5(37)42x=126(38)x+67=147(39)x+1.5=5.3(40)3.3-x=1.1(41)2.6x-1.9x+3.5=25.9(42)3(0.7x-5.9)=5.4(43)4x÷3=32(44)13x÷52=0.2(45)9+x=88(46)x÷23=0.5(47)66x-28x+0.5=49.9(48)0.5x+2=10.5(49)18.5-4x=6.5(50)13x÷52=0.3(51)55+x=88(52)0.8x+5.1=9.9(53)28x+25=81(54)5x+9x+45=101(55)x+4.8=14.2(56)(18x-26)÷13=16(57)14.3+15x=17.3(58)13x+6×5=160(59)25x+12×0.4=9.8(60)52-x=47(61)127-35x=57(62)2.1+0.3x=10.8(63)(2x-24)÷4=3(64)1.8x-0.4x-0.6=54(65)12x-5x-4.3=31.4(66)6.3-x=3.6(67)17.9-4.7x=8.5(68)0.5x+3.6=5.1(69)7x-6×2=142(70)18+8x=35.6(71)6x-57=57(72)x÷3=2.1(73)9.9÷x=1.1(74)6x÷58=3(75)7x-5x+3.2=20.4(76)0.5x+2.1x+1.1=99.9(77)137-8x=57(78)x-0.8=6.2(79)17x÷68=0.2(80)31x-16x-3=25.5(81)2x-4.3=1.9(82)41x+52x-3.3=61.8(83)9x+5.3=22.4(84)1.1x+0.5×11=8.8(85)4x+2×89=222(86)95-x=22(87)46+9x=217(88)14x+8x-7=37(89)2(0.9x-7.5)=48(90)x÷49=0.4(91)3(2x-22)=150(92)5.2x-3.8x=16.8(93)49+x=120(94)2(0.8x+8.8)=22.4(95)7x-4×1.4=7.7(96)12x+9x+25=172(97)8÷x=0.4(98)1.5x-0.4×21=5.1(99)28x=19.6(100)5x=4(101)8.7x-2.4x-1.1=11.5(102)9.3x+0.5x+2.7=32.1(103)4x-2×2.1=1(104)x÷8=1.1(105)(1.1x-1.4)÷2=7(106)16.4+3x=27.2(107)1.3x+0.4×31=16.3(108)150-3x=132(109)20x÷4=45(110)(9x-10)÷2=94(111)2x+15x=136(112)(1.4x+8.8)÷2=7.2(113)27x+3=13.8(114)19x-14x+1=9(115)5.8÷x=0.2(116)16.3-2x=2.7(117)186-10x=56(118)7.8x÷13=1.2(119)16x-5x-35=53(120)0.9x+1.3x-0.2=153.8(121)(3x+41)÷10=11(122)3.1x-0.4×32=5.8(123)(3.8x+8.8)÷8=8.7(124)13x-28×5=55(125)6x=102(126)x-18=54(127)4(10x+27)=188(128)3(0.4x-5.7)=12.9(129)6x+2x+25=241(130)(9x-12)÷3=32(131)22(3x+3)=198(132)8x+20×0.9=28.4(133)31x=15.5(134)26x+31×0.3=19.7(135)39x+58x-2.4=65.5(136)2x+6×5=122(137)5.5÷x=1.1(138)9x+7x-29=147(139)3.7x+8.8x=125(140)19x-2×3=32(141)63x-23x+4.3=60.3(142)14+6.3x=26.6(143)19.2-9.1x=1(144)19x+54=111(145)9x-23×0.5=2.9(146)5.9x=17.7(147)0.6x÷9=2(148)40x+95x-1.5=39(149)97+x=153(150)2x-1.1×5=4.5(151)18.4÷x=0.8(152)6.4x÷12=1.6(153)(9x-2.7)÷3=5.1(154)3(7x-47)=90(155)7x-2x-20=85(156)145÷x=29(157)5x-18=87(158)8x-6x=4(159)17x-5x+46=94(160)16+7x=93(161)17.2+8x=27.6(162)1.6x=11.2(163)19.5-66x=6.3(164)5x-21×3=42(165)19x-3x+37=101(166)6.7x-4.6x-1.6=2.6(167)7x-5.7=9(168)3.6x-0.4x=41.6(169)7.4+x=8.3(170)4x÷28=0.6(171)7x-12=107(172)(12x+32)÷4=17(173)(5.8x+9.3)÷21=2.1(174)4x+0.4×49=39.6(175)4(2x-11)=44(176)50x+22=122(177)98+x=161(178)65x-42x-2=9.5(179)17x-15x=22(180)(5x+49)÷37=2(181)0.2x+1=12.8(182)1.2x+0.6×23=17.4(183)3.4+x=9.2(184)3.4x-1.7x+2.9=36.9(185)4x-0.4x+3.1=78.7(186)16.6-21x=4(187)2.3x+0.6x+3.8=27(188)13x-10x=15(189)4.1x-0.3x=68.4(190)32x-55=137(191)12.6÷x=1.8(192)x÷64=2(193)6.5-x=1.8(194)(6x+6)÷6=13(195)3x+4x-17=165(196)88-x=57(197)19.7-0.3x=1.4(198)12x-9x=42(199)15x=19.5(200)0.6x-1.8=1.2(201)5.1x+3x=121.5(202)7.3x+3.1x=104(203)8.4x+3.6x=36(204)7x-3.8x=6.4(205)4.6x+4.4=18.2(206)(7x+36)÷3=33(207)14x-4x+26=96(208)21x-1.1=9.4(209)11+6x=14(210)x÷8=21(211)1.1x+1.6×4=26.2(212)4x+5.1=15.9(213)30x+45x-0.6=21.9(214)5(4x+8)=200(215)(8x-11)÷7=27(216)68÷x=17(217)11(0.5x+0.2)=18.7(218)14x-3x=55(219)18x-6x-4=20(220)18x+4×47=278(221)71-x=33(222)8x+5x+23=49(223)x÷3=45(224)x+8=17.5(225)(6.5x+6.3)÷6=10.8(226)5x+1.1=16.6(227)2x=170(228)x-0.7=2.2(229)30÷x=10(230)4x+6x=30(231)10-1x=5(232)1.9-0.2x=1.1(233)13x-8x-7=38(234)184÷x=8(235)6x-2×18=132(236)21x+3×37=237(237)29x+41×3=297(238)(6.5x+5.4)÷16=4.4(239)5.6÷x=2.8(240)x+8=16.9(241)48x-17x+3=12.3(242)5x+1.6x+2.1=61.5(243)4x-3.4=3(244)88x+91x-0.2=89.3(245)0.5x÷20=0.7(246)x-4.1=5(247)22x=66(248)6x-4.5x=24(249)19x-13x=54(250)73+31x=228(251)2.8x-1.6x+3.8=14.6(252)2x÷4=2.5(253)0.9x÷42=0.3(254)6(9x+12)=180(255)4x-40=148(256)3.4x+4.5×2=19.2(257)x+12=104(258)3.4x+7.2x+3.3=141.1(259)3.5+0.3x=19.1(260)x-8.1=1.3(261)86x=172(262)19x+18x-19=203(263)17.2-6x=14.8(264)67+x=75(265)10(0.5x-4)=35(266)12x-4x-10=102(267)105-19x=67(268)(11x-46)÷15=5(269)2(x+34)=94(270)2(2x+42)=108(271)1.4x+2.5x-2.3=75.7(272)4.9x+1.4x+3.1=97.6(273)6(0.5x-4.5)=21(274)x-1.4=2.4(275)2.6x-4.9=8.1(276)x+87=161(277)7.6+0.2x=21.4(278)74+x=120(279)2(3x-7)=88(280)x-1.4=1.7(281)9.8x=19.6(282)4x+5x=216(283)2x÷12=1.3(284)14x+8x=220(285)5.5+7x=19.5(286)x+1.9=3.9(287)6x+5x=154(288)16.5-10x=8.5(289)15x+3x-16=92(290)87x+74x+2.9=99.5(291)(3x-9)÷2=12(292)4.6x-0.4×19=10.8(293)x+5.3=9.6(294)81x-43x-4.8=10.4(295)6.3x-0.9x-1.7=19.9(296)4(x+12)=172(297)3.9x+5.9x-1.3=106.5(298)2x+54×2=298(299)4x+8x=288(300)x-2.3=3.9(301)4x-3.3x=3.5(302)(7.1x-5.1)÷5=14.6(303)(1.9x+1.1)÷37=0.8(304)12x+23×0.4=22.4(305)120+7x=260(306)59x-1.2=10.6(307)39÷x=13(308)47x-19x-4.2=32.2(309)0.2x÷16=0.7(310)(6.3x-9.4)÷23=3.7(311)8.6-x=7.2(312)16x-4x-22=110(313)2x+6x-3=237(314)8x+14x-11=275(315)3x-54×2=78(316)x+60=131(317)0.5x=7.5(318)18x+4x=66(319)18-0.5x=12(320)96x-62x-4.1=16.3(321)1.6x-2.9=14.7(322)67x+37x+1.1=105.1(323)8x+2x+40=100(324)146-2x=134(325)4x=140(326)5.9x+5.5=17.3(327)(3x+6.6)÷6=2.6(328)13.4+4x=31.4(329)(1.9x+5.9)÷6=5.1(330)20x+13x+0.7=23.8(331)x÷20=0.8(332)11(0.9x+0.2)=31.9(333)6x+17=203(334)0.2x+5.1=18.1(335)4.8x-2.5x-1.9=44.1(336)6.1+x=10.5(337)4x+33=73(338)2.8x-0.8×5=10(339)x÷15=12(340)3.3x-1x-1.8=41.9(341)4.2+0.3x=23.7(342)2(0.7x+3.4)=13.8(343)171-2x=113(344)0.2x=10.6(345)16x-9x+44=100(346)1.8x+0.2x-0.4=91.6(347)0.6x-0.7×16=3.8(348)3x=13.2(349)6.9+x=10.3(350)75-x=73(351)4.4+5.3x=20.3(352)(9x-48)÷3=71(353)45x+6×1.8=28.8(354)7.9x-3.6x-1.4=20.1(355)68x-4=9.6(356)x÷6=31(357)89-x=77(358)1x-2.7=6.3(359)7.7x+3.1=18.5(360)(7.2x-8.8)÷8=1.6(361)10x+7x=51(362)7.2x+8.1x=153(363)90x÷12=15(364)16x÷3=32(365)20-x=15(366)4.2x-1.6x+1=32.2(367)2(2.7x+3.7)=29(368)10x-5×0.4=18(369)55x-30x+4=9(370)14x-6x=80(371)18x-53=91(372)4.4x+4.1x-3.7=166.3(373)2(1.9x-3.2)=8.8(374)4x=13.2(375)1.3x+2.4x-1.7=68.6(376)3(x-10)=69(377)4x-27×3=103(378)3.5x-1.9x-1.3=33.9(379)5(0.3x+6.7)=41(380)10x+1.4=7.4(381)x+41=83(382)18x-14x-4.3=8.5(383)13x-4x-7=47(384)0.3x=9.9(385)60÷x=3(386)12x+50x+1.6=69.8(387)6x+32×0.3=18(388)7x+12x+30=125(389)4.8x+8.1x+1.7=40.4(390)14x+2×51=270(391)5.2+4.9x=15(392)5x+41=231(393)4.4x-0.6×5=14.6(394)11x+2x+16=146(395)4x+3.1=5.5(396)19x+45x-1.2=30.8(397)144÷x=6(398)34x-8x-1.8=58(399)23x-6x+0.9=14.5(400)13.1-50x=3.1(401)4x+19x-5=64(402)5x+3×3.4=26.7(403)71x+47=189(404)2(11x+24)=158(405)0.3x-3.3=15.9(406)1.9+7x=21.5(407)2(1.5x+2.3)=43.6(408)10x+46=186(409)x÷28=0.3(410)8.3+x=8.7(411)99x÷9=22(412)1.2x÷24=0.3(413)x+9.3=13.1(414)9.5-x=2.5(415)9.9x-1.9x=56(416)0.2x-1.9=4.3(417)42x+4.9=21.7(418)2(1.3x-5.5)=43.6(419)87x-3.2=14.2(420)15.1-3x=9.1(421)31x=62(422)157+3x=304(423)94x+90x+0.2=37(424)18x=18(425)6.6x+4.8x+2.9=71.3(426)13x-11×0.5=4.9(427)2x-10×0.4=4.6(428)(15x+9)÷6=14(429)x-14=80(430)40x-3x-0.7=88.1(431)6.8x+0.5x+3.4=98.3(432)2(2x+16)=116(433)2.7x-1.7x+3=36(434)56+6x=242(435)x-36=21(436)13x+2x-15=210(437)19.2+0.7x=24.1(438)4(4x-19)=68(439)78x-21x+2.3=19.4(440)x÷7=0.5(441)7x-4x-41=43(442)40x÷8=2.5(443)0.2x+4.7=21.5(444)17x-3x+39=109(445)x-59=37(446)187÷x=11(447)62x÷4=3.1(448)35x÷5=2.1(449)2x+9x-1.6=40.2(450)101-3x=77(451)10x+30×0.3=24(452)16.1+6x=17.3(453)(5.4x+0.3)÷3=14.5(454)x-5.3=1(455)0.7x-0.9×2=15(456)4(0.3x+2)=21.2(457)6.3-x=6.1(458)x+1=1.2(459)(8x-30)÷7=6(460)0.5x+0.5×6=8.5(461)x-57=13(462)17x-4x+1.1=42.7(463)x÷48=4(464)x÷49=2(465)3.5x-3.2x-2.8=3.5(466)x+4.6=12.3(467)x-59=11(468)5+x=5.6(469)2.2x+0.4×12=18(470)8x+6×3.3=30.2(471)32x-18=46(472)185-5x=20(473)(8x+12)÷2=34(474)x+95=191(475)2x-4.7=2.1(476)18(13x-29)=180(477)3.9÷x=1.3(478)18x+13x+11=259(479)x-13=82(480)3x-17×0.6=2.7(481)3.4÷x=1.7(482)67-x=35(483)7x-10=53(484)5x-2x=36(485)9.3x+3.5x-0.3=50.9(486)x÷44=4(487)5x+58×3=204(488)170+8x=330(489)10x-4x-6=102(490)101+35x=206(491)23x=115(492)(6.5x-3.6)÷6=5.9(493)x÷5=33(494)0.6x÷4=3.9(495)1.2x=18(496)x+77=131(497)23x+57x-3.2=36.8(498)6.2x÷31=0.4(499)17x-11x+41=95(500)0.8x-3.8=9.8(501)1.2x-0.4×12=7.2(502)2.9x-2.3x+0.3=9.3(503)3x+3=4.2(504)5x-3x=58(505)1.8+0.8x=12.2(506)22x+3.2=23(507)53-x=40(508)8.8+x=9.1(509)8.7x+1.1x=88.2(510)2(1.6x-5.8)=7.6(511)28x-16=180(512)28x÷70=2(513)51x+95x+2.7=134.1(514)3.2x+0.4×31=18.8(515)8.4-x=1.5(516)38x+8x+0.7=92.7(517)9x+5x=196(518)2.2x=19.8(519)3(14x-15)=123(520)1.8x=3.6(521)x÷71=0.2(522)83x=16.6(523)6.1-x=1.7(524)x+55=102(525)68+x=112(526)92+x=178(527)x-54=33(528)1.1+x=9(529)0.4x-5.8=5(530)25x-3.9=16.1(531)3.6-x=2.9(532)2x=2(533)(6x+2)÷8=4(534)2(1.5x+5.6)=41.2(535)x÷15=0.3(536)1.6x+0.8x=24(537)x-1.2=6.8(538)(0.8x-1.6)÷16=0.7(539)2(2.5x-6.8)=31.4(540)1.8x-0.9x+4.8=39.9参考答案(1)x=4.8(2)x=6(3)x=6(4)x=16(5)x=17(6)x=2(7)x=2(8)x=8(9)x=6(10)x=7.2(11)x=1.1(12)x=10(13)x=12(14)x=4(15)x=3(16)x=2(17)x=52(18)x=5(19)x=3(20)x=35(21)x=5.2(22)x=1.4(23)x=4(24)x=21(25)x=6(26)x=4(27)x=36(28)x=23(29)x=3(30)x=5(31)x=8(32)x=4(33)x=1.4(34)x=16(35)x=3(36)x=9(37)x=3(38)x=80(39)x=3.8(40)x=2.2(41)x=32(42)x=11(43)x=24(44)x=0.8(45)x=79(46)x=11.5(47)x=1.3(48)x=17(49)x=3(50)x=1.2(51)x=33(52)x=6(53)x=2(54)x=4(55)x=9.4(56)x=13(57)x=0.2(58)x=10(59)x=0.2(60)x=5(61)x=2(62)x=29(63)x=18(64)x=39(65)x=5.1(66)x=2.7(67)x=2(68)x=3(69)x=22(70)x=2.2(71)x=19(72)x=6.3(73)x=9(74)x=29(75)x=8.6(76)x=38(77)x=10(78)x=7(79)x=0.8(80)x=1.9(81)x=3.1(82)x=0.7(83)x=1.9(84)x=3(85)x=11(86)x=73(87)x=19(88)x=2(89)x=35(90)x=19.6(91)x=36(92)x=12(93)x=71(94)x=3(95)x=1.9(96)x=7(97)x=20(98)x=9(99)x=0.7(100)x=0.8(101)x=2(102)x=3(103)x=1.3(104)x=8.8(105)x=14(106)x=3.6(107)x=3(108)x=6(109)x=9(110)x=22(111)x=8(112)x=4(113)x=0.4(114)x=1.6(115)x=29(116)x=6.8(117)x=13(118)x=2(119)x=8(120)x=70(121)x=23(122)x=6(123)x=16(124)x=15(125)x=17(126)x=72(127)x=2(128)x=25(129)x=27(130)x=12(131)x=2(132)x=1.3(133)x=0.5(134)x=0.4(135)x=0.7(136)x=46(137)x=5(138)x=11(139)x=10(140)x=2(141)x=1.4(142)x=2(143)x=2(144)x=3(145)x=1.6(146)x=3(147)x=30(148)x=0.3(149)x=56(150)x=5(151)x=23(152)x=3(153)x=2(154)x=11(155)x=21(156)x=5(157)x=21(158)x=2(159)x=4(160)x=11(161)x=1.3(162)x=7(163)x=0.2(164)x=21(165)x=4(166)x=2(167)x=2.1(168)x=13(169)x=0.9(170)x=4.2(171)x=17(172)x=3(173)x=6(174)x=5(175)x=11(176)x=2(177)x=63(178)x=0.5(179)x=11(180)x=5(181)x=59(182)x=3(183)x=5.8(184)x=20(185)x=21(186)x=0.6(187)x=8(188)x=5(189)x=18(190)x=6(191)x=7(192)x=128(193)x=4.7(194)x=12(195)x=26(196)x=31(197)x=61(198)x=14(199)x=1.3(200)x=5(201)x=15(202)x=10(203)x=3(204)x=2(205)x=3(206)x=9(207)x=7(208)x=0.5(209)x=0.5(210)x=168(211)x=18(212)x=2.7(213)x=0.3(214)x=8(215)x=25(216)x=4(217)x=3(218)x=5(219)x=2(220)x=5(221)x=38(222)x=2(223)x=135(224)x=9.5(225)x=9(226)x=3.1(227)x=85(228)x=2.9(229)x=3(230)x=3(231)x=5(232)x=4(233)x=9(234)x=23(235)x=28(236)x=6(237)x=6(238)x=10(239)x=2(240)x=8.9(241)x=0.3(242)x=9(243)x=1.6(244)x=0.5(245)x=28(246)x=9.1(247)x=3(248)x=16(249)x=9(250)x=5(251)x=9(252)x=5(253)x=14(254)x=2(255)x=47(256)x=3(257)x=92(258)x=13(259)x=52(260)x=9.4(261)x=2(262)x=6(263)x=0.4(264)x=8(265)x=15(266)x=14(267)x=2(268)x=11(269)x=13(270)x=6(271)x=20(272)x=15(273)x=16(274)x=3.8(275)x=5(276)x=74(277)x=69(278)x=46(279)x=17(280)x=3.1(281)x=2(282)x=24(283)x=7.8(284)x=10(285)x=2(286)x=2(287)x=14(288)x=0.8(289)x=6(290)x=0.6(291)x=11(292)x=4(293)x=4.3(294)x=0.4(295)x=4(296)x=31(297)x=11(298)x=95(299)x=24(300)x=6.2(301)x=5(302)x=11(303)x=15(304)x=1.1(305)x=20(306)x=0.2(307)x=3(308)x=1.3(309)x=56(310)x=15(311)x=1.4(312)x=11(313)x=30(314)x=13(315)x=62(316)x=71(317)x=15(318)x=3(319)x=12(320)x=0.6(321)x=11(322)x=1(323)x=6(324)x=6(325)x=35(326)x=2(327)x=3(328)x=4.5(329)x=13(330)x=0.7(331)x=16(332)x=3(333)x=31(334)x=65(335)x=20(336)x=4.4(337)x=10(338)x=5(339)x=180(340)x=19(341)x=65(342)x=5(343)x=29(344)x=53(345)x=8(346)x=46(347)x=25(348)x=4.4(349)x=3.4(350)x=2(351)x=3(352)x=29(353)x=0.4(354)x=5(355)x=0.2(356)x=186(357)x=12(358)x=9(359)x=2(360)x=3(361)x=3(362)x=10(363)x=2(364)x=6(365)x=5(366)x=12(367)x=4(368)x=2(369)x=0.2(370)x=10(371)x=8(372)x=20(373)x=4(374)x=3.3(375)x=19(376)x=33(377)x=46(378)x=22(379)x=5(380)x=0.6(381)x=42(382)x=3.2(383)x=6(384)x=33(385)x=20(386)x=1.1(387)x=1.4(388)x=5(389)x=3(390)x=12(391)x=2(392)x=38(393)x=4(394)x=10(395)x=0.6