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)2x-45=45(2)x+27=122(3)4.6x-2.9x+2=20.7(4)2.9x-0.7×23=1.3(5)6x÷3=2(6)14.5+5x=26.5(7)104-3x=20(8)2x+2.4=17.6(9)9(0.3x+2.3)=39.6(10)93÷x=3(11)0.5x=13.5(12)2.7x÷18=0.9(13)94-x=36(14)2.8x+4.5=18.5(15)(16x+7)÷15=9(16)116+14x=214(17)45x+58x-3.3=48.2(18)(13x-39)÷2=104(19)52x=104(20)9x=18(21)4x+2x-42=12(22)8.8x+7.6x=164(23)19(1.2x-9.1)=32.3(24)8(3x-29)=104(25)31x+4.9=11.1(26)6(2x+2)=180(27)(7.9x+7)÷7=8.9(28)6.7x-3.4x=6.6(29)2(1.7x+8)=46.6(30)23x-16x+4.3=34.4(31)0.2x-2=10.6(32)3x÷51=0.2(33)2x-35×4=36(34)10÷x=0.4(35)x+3.7=4.1(36)67-x=15(37)80x-59x+1.1=22.1(38)x-26=35(39)87x-26x+3.3=58.2(40)7.8x+2.9x=21.4(41)6x+4x=80(42)2.9x-1.1×3=8.3(43)7x-24=81(44)1.5x-0.8x=32.2(45)44x+51x+0.5=162(46)3.6x-2.5×4=4.4(47)x÷8=0.4(48)2(3x+8)=130(49)3x-4.4=10.3(50)66x+5.1=24.9(51)0.3x=1.5(52)14.8+35x=25.3(53)30x+40=190(54)(9.2x+5.6)÷6=4(55)6x+18x=240(56)43x+53x+3.3=147.3(57)39-x=33(58)11x-4x+43=155(59)x-2.4=3(60)2x÷9=8(61)6x+2x=96(62)(3.9x-5.1)÷30=1(63)42x=126(64)11x-12×5=127(65)3.4x-1.8=15.2(66)2x÷23=4(67)13x-10x-5=13(68)10x-2×21=68(69)11x+27×0.7=35.4(70)9(0.9x-3.4)=34.2(71)7.8-8x=1.4(72)x+2.8=8.5(73)10x-5x+45=130(74)38x-34x+2.4=4(75)6(x-8)=78(76)5x-20×0.4=10.5(77)x÷12=9(78)50+17x=169(79)22x+42×0.3=28(80)6x=168(81)23(0.8x-9.4)=41.4(82)(12x-33)÷5=15(83)5x=13.5(84)17.4-4x=11.8(85)3(0.4x-5.9)=7.5(86)68+x=138(87)3+0.2x=21.2(88)4.9x+5.7x=148.4(89)14.2-10x=1.2(90)4.1+5x=15.6(91)146+2x=240(92)9.4+x=15.6(93)65x-43x+4.7=31.1(94)3(17x+18)=156(95)7x+5.4=8.9(96)27+x=64(97)10x+13x+3=210(98)69x-38x-0.4=18.2(99)0.6x-1.5×3=3.3(100)3.2+2x=4(101)6.4-x=1(102)11(7x-21)=154(103)50-x=35(104)3.4x-1.9x+0.2=40.7(105)28x-18=150(106)5.3x+4x+2.3=95.3(107)14.7÷x=0.3(108)16.2-7x=12(109)3x-0.9x=4.2(110)x-0.7=1.6(111)192÷x=4(112)61x+3=21.3(113)47x+38x-2.8=82.2(114)(16x+12)÷2=150(115)14.6+2.7x=22.7(116)99+x=121(117)x÷15=5(118)29x-17x-1.1=6.1(119)72+6x=234(120)0.5x+0.9×12=21.3(121)7.3x+5.4x+2.2=141.9(122)72÷x=9(123)17.7-4x=14.5(124)8x-1.8x+4.2=72.4(125)4(20x-44)=64(126)x+7.1=12.4(127)0.4x+2.9×4=28.8(128)27x=135(129)16.7-0.9x=5.9(130)2x÷41=4(131)8x-3x-15=45(132)187+25x=312(133)17x-8x-34=20(134)25x-3.7=8.8(135)1.2x+0.5x-3.2=12.1(136)8x-4x=88(137)3.2+x=8.3(138)8.8x-4.8x-2.9=21.1(139)x+3.3=11.4(140)26x+3×1.9=18.7(141)6x-4x+24=76(142)x+8.3=12.2(143)40÷x=8(144)4(0.9x+8.8)=42.4(145)106÷x=2(146)8x÷36=2(147)x÷72=2(148)(11x+45)÷13=6(149)7x÷63=0.2(150)11x-4×39=42(151)(5.1x+7.5)÷15=3.9(152)19x-8x=99(153)10x-3×9=113(154)2x+12x+46=256(155)67x+25x+4.8=124.4(156)4x=136(157)27x÷18=0.6(158)3x+4×12=72(159)1.5x-0.5x+0.6=6.6(160)1.6x÷4=1.2(161)67x+21x-4.4=48.4(162)(18x+48)÷8=15(163)9.9-x=6.9(164)3.2x-2.6x-4.7=12.1(165)3x-47=52(166)(6x-18)÷36=4(167)4x-10×0.8=10.4(168)162-6x=60(169)9x÷45=0.4(170)2x+9x+49=170(171)17x-14=139(172)18.6-0.2x=3(173)9x+10x=57(174)5x+7x+49=313(175)18x+55=163(176)0.8x+0.3×15=12.5(177)8x+37=77(178)0.5x-4.1=13.4(179)(5.5x-3.5)÷10=7.9(180)16x=6.4(181)9.7x-0.5x+2.8=39.6(182)0.2x+0.3×26=17.4(183)22x-5×1.7=6.9(184)1.4x+0.3x+3.9=124.6(185)17x-3×7=166(186)10x-2x-21=83(187)1.3x+2.6=15.6(188)0.3x=6.9(189)3.4x-1=12.6(190)14x-5x-36=81(191)8+0.7x=10.1(192)14x+4x=216(193)3.8x-0.4x+3.4=37.4(194)x-53=11(195)43x-31x-2.9=16.3(196)9x-2x+47=138(197)1.1x+8.6x-3.6=93.4(198)17.3-2x=4.5(199)6x=186(200)14x-12x+11=29(201)6.4x-0.4x-3.7=56.3(202)1.6x+0.8x-4.1=46.3(203)(7x-3)÷15=11(204)17.1-3x=13.2(205)86-x=49(206)2x÷3=3.8(207)72÷x=8(208)x+92=179(209)3.7x+7.5x+4.3=116.3(210)9.3x+1.2=19.8(211)5(x-2.5)=7.5(212)(3.9x-2.4)÷27=0.2(213)18.7-4.4x=9.9(214)35x+4.4=18.4(215)4.6x+1.4x=12(216)15-1.3x=2(217)x-4.1=2.6(218)x÷14=0.4(219)8x-35×0.3=7.9(220)x+70=161(221)x-13=67(222)42x-3x-4.4=30.7(223)91x-83x+4.2=7.4(224)10x÷5=4(225)(2.2x-9.6)÷2=13.9(226)152+39x=347(227)2x-0.3x-1.9=59.3(228)3(x-14)=42(229)11x÷22=6(230)6x-1.5x=13.5(231)73x-35x+3.8=30.4(232)20x÷10=1.2(233)17x+5x=176(234)0.4x=14.4(235)5x+28×0.3=16.9(236)81+x=131(237)5x=175(238)18x+11x=87(239)2x+11x+43=238(240)129+14x=283(241)8x+2x-1.8=41.2(242)13x+28=184(243)x÷7=2.5(244)4.1+x=13.9(245)(2.2x-7.1)÷3=3.5(246)(6.9x-7.8)÷4=15.3(247)8.8x-4.1x-4.8=32.8(248)6x÷12=1(249)6.3x+6.2x-1.7=148.3(250)3.3+0.6x=5.7(251)5.2+x=11(252)2.1x-0.2×9=10.8(253)10x+2×4.8=20.6(254)87x-15x-1.2=20.4(255)(5.6x-0.9)÷5=9.9(256)16.5÷x=1.1(257)8.3+4.1x=20.6(258)1.4x+2.8x-4.7=62.5(259)20(x+6)=200(260)6.3x+5.6=18.2(261)2.4x÷6=3.2(262)5.6÷x=0.2(263)1.8x+1.3=6.7(264)3(2x-9.2)=26.4(265)12x-8x=12(266)x+44=116(267)9x-4x-47=23(268)5.4+2x=17(269)3x+6x=216(270)6x-2x=128(271)6x-17×0.5=2.9(272)(4x+20)÷4=29(273)26x+55×2=162(274)6.9x=13.8(275)4.2x+0.6×27=28.8(276)6-x=5(277)x-4=2.9(278)2.2x+5.8=19(279)0.5x+0.4×42=19.8(280)1x+5.9=7.9(281)9.2-2.4x=4.4(282)8x-4x=80(283)x+3.2=7.2(284)1.1x-0.4×10=13.6(285)2(11x+46)=136(286)2(2.4x-9.3)=29.4(287)16x-10x+15=81(288)(11x-43)÷9=5(289)6.7x+7.1x=110.4(290)1.2x+1.3x-3.1=16.9(291)54x=16.2(292)18x-6×1.1=4.2(293)3.7x-2.8x=14.4(294)6(19x-36)=126(295)3.7x=11.1(296)15x+2x-24=95(297)9x+6x+30=345(298)51x-4x+0.5=38.1(299)2(x+3.7)=11.4(300)x÷31=3(301)0.6x÷54=0.3(302)1.1x-3.1×2=12.5(303)2x+4×2.2=15(304)2x+16×4=110(305)2(x+7.8)=41.6(306)(3x+7.6)÷16=1.6(307)5(6.4x-9.9)=46.5(308)168-6x=126(309)2(4.5x+7.1)=41.2(310)2x+0.6x-2=128(311)180-10x=130(312)17x+8×2=29.6(313)2x-4.4=7(314)13.4÷x=0.2(315)3.1x+4.1x-2.3=48.1(316)0.4x-3.2=16.4(317)1.2x+4.1x+3.3=45.7(318)9x-7x=40(319)4x-2.9x+3.6=5.8(320)8.4x-0.6x-3.5=74.5(321)2x+6x=224(322)(17x+2)÷14=5(323)18.7-0.6x=6.7(324)18x-4.4=13.6(325)2(x+8)=50(326)x-27=17(327)x+9.5=13.4(328)2.2x-5=12.6(329)4(9x+11)=188(330)6x+26x-0.3=44.5(331)9+x=15.2(332)x÷4=4.7(333)31x=12.4(334)55x=11(335)2x=76(336)3x+2×10=104(337)14x-4x-2.2=15.8(338)0.6x÷18=1(339)58-23x=12(340)11x+47=80(341)11x+11×0.9=19.8(342)x+8.6=16.7(343)x÷7=17(344)x-2.9=6.7(345)32x÷12=8(346)4.9-x=2(347)(8.1x+4.3)÷26=1.1(348)6x÷39=2(349)0.5x+4.8x-4.4=80.4(350)111-2x=73(351)57x+60x+1.2=24.6(352)36x+16×1.2=26.4(353)(x+35)÷6=10(354)3x+11×7=203(355)18x+8x-13=39(356)(6x-48)÷4=27(357)188÷x=4(358)x÷4=0.6(359)2.6+x=11.6(360)x+12=78(361)2.5x÷10=0.5(362)2x+2=21(363)(3.1x+7.5)÷19=1.7(364)2.2x=4.4(365)67+67x=201(366)1.4+x=4.9(367)17x-17=102(368)(4x-36)÷16=3(369)12.8÷x=0.8(370)18x-14x+46=74(371)0.5x+5.6=8.1(372)3.7x+5.6=20.4(373)1.8x-5.5=3.5(374)x÷7=0.7(375)11x+10x+30=387(376)2.6x+2.9x+3.4=74.9(377)x-3.7=1.4(378)0.3x-3.2=3.1(379)10x+6x-30=82(380)25x-5x-2.7=65.3(381)x+40=138(382)2.4x+2.5x+3.8=72.4(383)3(0.7x+1.6)=30(384)87-x=15(385)7.6+x=8.8(386)12x=19.2(387)13.5+2x=26.1(388)8(9x-31)=112(389)142-13x=77(390)(5x+33)÷2=54(391)35-x=19(392)21x+2.3=8.6(393)x÷4=46(394)11(0.2x+1.8)=35.2(395)(1.8x+4.8)÷2=12.3(396)3x-2×49=37(397)18x-15=57(398)(9.2x-2.8)÷4=6.2(399)(18x+40)÷4=64(400)9.1-x=4.6(401)125-57x=11(402)x-33=51(403)16x-10x-7=65(404)19x-14x=45(405)6.9+0.4x=10.9(406)0.5x-0.9×8=1.3(407)11x+7x-28=242(408)8x-6x=14(409)21x-5×2.7=1.2(410)x+18=73(411)4.6x+0.3×35=24.3(412)x-2.4=1.3(413)0.3x÷15=0.5(414)7x+4×24=166(415)4.3x+0.6x+2.7=95.8(416)50x+30x-0.8=95.2(417)12x-9x-3=18(418)4.6x+4.1x=147.9(419)2x-45×2=56(420)89x+82x+1.3=155.2(421)x-15=47(422)9.9x+1.7x=116(423)4x÷8=25(424)10.3+0.7x=15.9(425)24+11x=46(426)8x-11×4=44(427)11x+3x-28=196(428)28x=19.6(429)55x÷11=10(430)7x+38x+2.8=83.8(431)16x+15x-10=300(432)75+x=171(433)3x-2×2.2=4.9(434)80÷x=5(435)14x=42(436)54+x=141(437)13.2-4x=10.4(438)x-2.5=1(439)4x-34=106(440)45x+33x-1.1=108.1(441)x÷4=7(442)5x÷10=1.3(443)14x+3=14.2(444)84x-9x-1.2=43.8(445)x-43=34(446)11x+12x-36=194(447)16x-4.4=6.8(448)2(2x+26)=188(449)7.1x-1.1x-0.4=11.6(450)(7.4x-7)÷3=17.4(451)x÷24=0.4(452)7(0.6x+0.2)=22.4(453)x÷33=0.3(454)(7.4x+2)÷3=5.6(455)15x-4x=110(456)4.3x-1.9x=33.6(457)x+9.8=11.5(458)141÷x=3(459)6(2x-6.1)=35.4(460)18x-13x+6=36(461)15.6÷x=1.2(462)15x+3×37=201(463)7x+8x+4=169(464)1.7x-1.4x-1.5=9.9(465)2(2x+2)=164(466)8.4x-1.1x=36.5(467)7.7x-5.8x+1.6=14.9(468)58x+14x+2.9=31.7(469)x+76=80(470)(14x-4)÷2=33(471)2(9x-14)=62(472)(7x-9)÷17=4(473)35x+42x-4.6=95.5(474)8.5x-2.5=14.5(475)x-31=43(476)75x÷5=3(477)13.3+31x=25.7(478)(2.4x+4)÷8=5.6(479)x÷9=9(480)12.2+0.2x=32.2(481)0.6x+1.2×4=7.8(482)4.9+x=6.9(483)0.2x+1×14=15.2(484)x÷15=9(485)16.6-0.8x=8.6(486)9.8-x=3.2(487)0.7x+2.7x=71.4(488)44x-16x-1.3=26.7(489)4x-5.4=14.2(490)3.5-x=1.7(491)96x+29=221(492)0.9x-0.6x=15(493)0.2x=0.8(494)8.2x-4x-4.4=12.4(495)18.3-0.6x=15.3(496)12x-8x-20=32(497)48x=9.6(498)x-34=11(499)78x-9x+2.2=29.8(500)15x-7x+15=31(501)9.1-x=8.8(502)40x-6×1.8=1.2(503)9x+16x-24=76(504)12÷x=0.2(505)x-1.6=3.2(506)7.2-0.8x=3.2(507)10x+52x+2.2=27(508)0.4x=5.2(509)8.2-3x=5.5(510)45x-4.9=13.1(511)x+19=63(512)2x+26=174(513)13x+42=224(514)47x+35x+1.8=157.6(515)2x+13×4=212(516)62x+41x-1.2=101.8(517)97-x=10(518)4.1-x=2.4(519)0.9x-0.2×11=14.9(520)6x-2.6x=34(521)18.5÷x=3.7(522)11.9+6.8x=25.5(523)7.3+75x=22.3(524)6.3x+1.1x=111(525)45+x=136(526)5x+19x+12=204(527)3x+26×6=237(528)x÷28=0.3(529)3x-1.7=14.5(530)138-27x=30(531)8x+5.7x+2.2=166.6(532)2x+32=226(533)6(x-11)=108(534)14.7+4x=34.3(535)13+x=88(536)86-x=39(537)37+x=80(538)35x-50=55(539)8.5x-3.5x+0.6=55.6(540)95x-3.2=15.8参考答案(1)x=45(2)x=95(3)x=11(4)x=6(5)x=1(6)x=2.4(7)x=28(8)x=7.6(9)x=7(10)x=31(11)x=27(12)x=6(13)x=58(14)x=5(15)x=8(16)x=7(17)x=0.5(18)x=19(19)x=2(20)x=2(21)x=9(22)x=10(23)x=9(24)x=14(25)x=0.2(26)x=14(27)x=7(28)x=2(29)x=9(30)x=4.3(31)x=63(32)x=3.4(33)x=88(34)x=25(35)x=0.4(36)x=52(37)x=1(38)x=61(39)x=0.9(40)x=2(41)x=8(42)x=4(43)x=15(44)x=46(45)x=1.7(46)x=4(47)x=3.2(48)x=19(49)x=4.9(50)x=0.3(51)x=5(52)x=0.3(53)x=5(54)x=2(55)x=10(56)x=1.5(57)x=6(58)x=16(59)x=5.4(60)x=36(61)x=12(62)x=9(63)x=3(64)x=17(65)x=5(66)x=46(67)x=6(68)x=11(69)x=1.5(70)x=8(71)x=0.8(72)x=5.7(73)x=17(74)x=0.4(75)x=21(76)x=3.7(77)x=108(78)x=7(79)x=0.7(80)x=28(81)x=14(82)x=9(83)x=2.7(84)x=1.4(85)x=21(86)x=70(87)x=91(88)x=14(89)x=1.3(90)x=2.3(91)x=47(92)x=6.2(93)x=1.2(94)x=2(95)x=0.5(96)x=37(97)x=9(98)x=0.6(99)x=13(100)x=0.4(101)x=5.4(102)x=5(103)x=15(104)x=27(105)x=6(106)x=10(107)x=49(108)x=0.6(109)x=2(110)x=2.3(111)x=48(112)x=0.3(113)x=1(114)x=18(115)x=3(116)x=22(117)x=75(118)x=0.6(119)x=27(120)x=21(121)x=11(122)x=8(123)x=0.8(124)x=11(125)x=3(126)x=5.3(127)x=43(128)x=5(129)x=12(130)x=82(131)x=12(132)x=5(133)x=6(134)x=0.5(135)x=9(136)x=22(137)x=5.1(138)x=6(139)x=8.1(140)x=0.5(141)x=26(142)x=3.9(143)x=5(144)x=2(145)x=53(146)x=9(147)x=144(148)x=3(149)x=1.8(150)x=18(151)x=10(152)x=9(153)x=14(154)x=15(155)x=1.3(156)x=34(157)x=0.4(158)x=8(159)x=6(160)x=3(161)x=0.6(162)x=4(163)x=3(164)x=28(165)x=33(166)x=27(167)x=4.6(168)x=17(169)x=2(170)x=11(171)x=9(172)x=78(173)x=3(174)x=22(175)x=6(176)x=10(177)x=5(178)x=35(179)x=15(180)x=0.4(181)x=4(182)x=48(183)x=0.7(184)x=71(185)x=11(186)x=13(187)x=10(188)x=23(189)x=4(190)x=13(191)x=3(192)x=12(193)x=10(194)x=64(195)x=1.6(196)x=13(197)x=10(198)x=6.4(199)x=31(200)x=9(201)x=10(202)x=21(203)x=24(204)x=1.3(205)x=37(206)x=5.7(207)x=9(208)x=87(209)x=10(210)x=2(211)x=4(212)x=2(213)x=2(214)x=0.4(215)x=2(216)x=10(217)x=6.7(218)x=5.6(219)x=2.3(220)x=91(221)x=80(222)x=0.9(223)x=0.4(224)x=2(225)x=17(226)x=5(227)x=36(228)x=28(229)x=12(230)x=3(231)x=0.7(232)x=0.6(233)x=8(234)x=36(235)x=1.7(236)x=50(237)x=35(238)x=3(239)x=15(240)x=11(241)x=4.3(242)x=12(243)x=17.5(244)x=9.8(245)x=8(246)x=10(247)x=8(248)x=2(249)x=12(250)x=4(251)x=5.8(252)x=6(253)x=1.1(254)x=0.3(255)x=9(256)x=15(257)x=3(258)x=16(259)x=4(260)x=2(261)x=8(262)x=28(263)x=3(264)x=9(265)x=3(266)x=72(267)x=14(268)x=5.8(269)x=24(270)x=32(271)x=1.9(272)x=24(273)x=2(274)x=2(275)x=3(276)x=1(277)x=6.9(278)x=6(279)x=6(280)x=2(281)x=2(282)x=20(283)x=4(284)x=16(285)x=2(286)x=10(287)x=11(288)x=8(289)x=8(290)x=8(291)x=0.3(292)x=0.6(293)x=16(294)x=3(295)x=3(296)x=7(297)x=21(298)x=0.8(299)x=2(300)x=93(301)x=27(302)x=17(303)x=3.1(304)x=23(305)x=13(306)x=6(307)x=3(308)x=7(309)x=3(310)x=50(311)x=5(312)x=0.8(313)x=5.7(314)x=67(315)x=7(316)x=49(317)x=8(318)x=20(319)x=2(320)x=10(321)x=28(322)x=4(323)x=20(324)x=1(325)x=17(326)x=44(327)x=3.9(328)x=8(329)x=4(330)x=1.4(331)x=6.2(332)x=18.8(333)x=0.4(334)x=0.2(335)x=38(336)x=28(337)x=1.8(338)x=30(339)x=2(340)x=3(341)x=0.9(342)x=8.1(343)x=119(344)x=9.6(345)x=3(346)x=2.9(347)x=3(348)x=13(349)x=16(350)x=19(351)x=0.2(352)x=0.2(353)x=25(354)x=42(355)x=2(356)x=26(357)x=47(358)x=2.4(359)x=9(360)x=66(361)x=2(362)x=9.5(363)x=8(364)x=2(365)x=2(366)x=3.5(367)x=7(368)x=21(369)x=16(370)x=7(371)x=5(372)x=4(373)x=5(374)x=4.9(375)x=17(376)x=13(377)x=5.1(378)x=21(379)x=7(380)x=3.4(381)x=98(382)x=14(383)x=12(384)x=72(385)x=1.2(386)x=1.6(387)x=6.3(388)x=5(389)x=5(390)x=15(391)x=16(392)x=0.3(393)x=184(394)x=7(