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)31x=15.5(2)(8x-26)÷2=91(3)6x-3×1.2=2.4(4)9.1-x=1.7(5)3x-2.7=3.3(6)50x-9x-3.7=74.2(7)3.5x-0.4x+0.3=77.8(8)7x+5×0.4=13.9(9)4.6x-0.2×42=10(10)5.7+x=10.7(11)47x-41x+1.1=7.7(12)63x-1.7=10.9(13)19.9-2.2x=13.3(14)4x+23×7=309(15)x+9.2=11.5(16)2x+43=63(17)3x-0.5×15=4.5(18)x-23=28(19)10.6+4.9x=25.3(20)4.5x+1.1×14=24.4(21)20x+18x+2.4=82.2(22)2x+3x=255(23)92-x=16(24)77+x=151(25)8.4x-2.6x+1.3=59.3(26)0.3x=3(27)0.2x+8.3x-4.4=38.1(28)8x=32(29)27x-9×8=36(30)7.8x+1.2=16.8(31)49x-4x+1.8=28.8(32)8x=144(33)3x+2×3=75(34)7-0.8x=2.2(35)19x+18x+12=86(36)3x-2×30=63(37)0.7x÷14=0.4(38)15.7+12x=21.7(39)6.7x+3x-0.9=37.9(40)18x+13x+0.5=152.4(41)116-15x=71(42)12x+15x=270(43)3x÷18=1(44)(7.6x-2)÷8=2.6(45)0.2x+0.4×37=21.6(46)94x-47x-3.8=10.3(47)8x+56=128(48)3x-2×32=86(49)5.5÷x=0.5(50)3x-1.4=14.5(51)16x-11x+28=53(52)8.6x+9.8x-1.9=34.9(53)5x+59=239(54)89+27x=278(55)0.5x-1.8×3=14.1(56)2x-2.9=2.7(57)8.3+x=18.1(58)28x+17×1=25.4(59)17x+6x+40=155(60)4.9x+2.5×4=24.7(61)6.3-21x=2.1(62)11+6x=16.4(63)12.5-3x=7.4(64)8.8x+2.7x-2.1=55.4(65)4x-3.3=5.1(66)x-3.7=5.4(67)x÷4=4(68)2.9x=8.7(69)x+60=113(70)55x÷5=22(71)4x-2×4.5=3.4(72)2(12x-33)=30(73)40x-26x-2.9=15.3(74)5(2x+28)=190(75)0.3x-0.6×7=9.3(76)6.8x+0.2x=98(77)x÷16=1.1(78)x+8.6=16(79)81x-2.1=14.1(80)18x-3x+34=124(81)10÷x=0.2(82)1.2x+2.9=8.9(83)14x÷8=0.7(84)53x+80x+4.3=150.6(85)4x+6x+45=135(86)x+96=164(87)18x+13x-40=177(88)2x-1.4x+1.4=22.4(89)2x+17x-39=170(90)13x-10x=18(91)12.6+26x=25.6(92)2(0.5x+8.5)=47(93)22x-15x-2.6=16.3(94)2x+15×6=230(95)51x+13x+4.6=68.6(96)2(0.4x+1.7)=42.6(97)11.2÷x=0.7(98)0.4x-3×2=3.6(99)11x+6×12=94(100)57+14x=253(101)32x+1.9=17.9(102)3.9x-0.6×10=5.7(103)(1.6x+0.2)÷2=7.3(104)3.8x+0.2×11=17.4(105)5x+4x+41=104(106)38x=15.2(107)4x+3x-13=78(108)9x-2x-46=38(109)10x-6x+1.1=33.5(110)50+x=143(111)28x+23×0.8=38(112)3+x=60(113)8.7x-7.5x=4.8(114)62+11x=95(115)2x-24=172(116)53x-37x-3.3=1.5(117)0.9x+1.3=5.8(118)x+43=66(119)17.2+0.3x=34(120)72-2x=58(121)5(0.7x-9.2)=45(122)98x+26=222(123)1.8x=19.8(124)10x+5.7=10.7(125)3x+11×4=203(126)x+22=39(127)0.8x-1×6=2.8(128)2.3x+1.5x+1=156.8(129)7x=168(130)28x=11.2(131)96÷x=6(132)2(3x+12)=156(133)(3x-18)÷6=6(134)4(3x+21)=132(135)25x+9x+3.5=105.5(136)42x+5x-4.7=94(137)36+x=92(138)15.4-0.4x=12.6(139)x÷35=3(140)3(16x-47)=195(141)x-68=12(142)0.9x÷2=1.8(143)6.5x-4.4x=12.6(144)3x-5×1.7=4.7(145)0.8x+0.4x=48(146)15.9+3x=24.9(147)196-2x=138(148)2.3x=16.1(149)0.6x-5.1=8.1(150)x÷72=2(151)(0.4x+1.6)÷24=0.2(152)4x-21=95(153)18.2+11x=24.8(154)0.9x+5x-1.6=63.3(155)x÷3=43(156)x+39=116(157)9x+4.8x+1.2=153(158)32x+5=24.2(159)3.2x+2.8x=96(160)(0.9x+6.3)÷7=2.7(161)x+68=84(162)x-3.7=3.3(163)18-4.1x=1.6(164)8x-6x+3.7=13.5(165)4x÷8=16(166)1.5x-1x-4.2=6.3(167)x-42=23(168)x+4.4=9.6(169)29x+3x+1.5=87.9(170)60x÷15=12(171)2x+7x+14=167(172)18.4÷x=0.2(173)19x-10x-2.2=26.6(174)15x-5x-19=11(175)3.7x-1.1x+3.3=29.3(176)4x+5×2.4=26.8(177)(9x+8)÷7=5(178)(2x+14)÷20=1(179)(0.3x-0.4)÷2=2.5(180)30x-40=80(181)50÷x=2(182)6+x=7.4(183)2x+11×0.7=16.5(184)3(x+20)=183(185)8x+59=99(186)7x+6x=39(187)24x+97x-1.8=46.6(188)4x÷46=2(189)2x=17(190)10÷x=2(191)13x+19x-11=213(192)2.2x=6.6(193)x+2=3.5(194)x-23=54(195)3x-2.8=2.9(196)(1.6x+3.2)÷9=3.2(197)13x+13×1.1=33.8(198)11x-6x-20=45(199)0.7x+0.2×21=6.3(200)72x=14.4(201)4x÷64=0.3(202)18x-6x=60(203)84x-53x+4.9=23.5(204)5.8-x=2.6(205)11x-4x=14(206)198÷x=9(207)x-1.8=3(208)22x-2×0.5=10(209)2.7x=16.2(210)3x-3×27=45(211)12+x=75(212)3x-10×18=12(213)3(3.6x+0.3)=44.1(214)33x÷55=0.3(215)5x+6.9x+2.7=133.6(216)6.8x-5x=3.6(217)24(0.8x-6.5)=36(218)x+1.2=11.1(219)3.5x+6.9x+2.4=64.8(220)27x+86x-3.9=97.8(221)0.4x-4.1=11.5(222)(9.6x-2.2)÷10=6.5(223)0.4x+1×7=21(224)3x÷9=6(225)(6.4x-4.6)÷17=5(226)7(7.7x-8.9)=45.5(227)8.7-x=5(228)8x+10x=54(229)(13x-14)÷8=21(230)49x-27×0.3=1.7(231)28x+14=182(232)2.4x+8.4x+2.2=110.2(233)16.5+0.4x=24.5(234)4x+16x-33=107(235)13x=78(236)9x-3x-26=70(237)4x=4.4(238)2x+7x=108(239)9+x=12.8(240)x÷7=26(241)x÷6=17(242)8x-4x=76(243)0.4x-1.6=2.4(244)(10x-15)÷15=13(245)15.2-3x=10.1(246)6x-2×76=10(247)86-x=77(248)32x+62x-1.1=45.9(249)2x-33=59(250)3x=93(251)132÷x=11(252)144+4x=200(253)2x-44=74(254)3(1.1x-5.9)=38.4(255)5.4-x=3.5(256)(17x+20)÷7=15(257)147+20x=327(258)2x=196(259)84x+95x-3.1=122.2(260)5x+42=177(261)47x+36x+4.8=38(262)17x-5x-2=46(263)x÷28=5(264)7(x+1.7)=32.9(265)5(1.2x+6.3)=49.5(266)77x÷14=1.1(267)67x-15x+1.3=63.7(268)3.3x+1.6×8=19.4(269)2x=4.2(270)6(2x-45)=162(271)12x+3x-6=114(272)9.8x+5x=133.2(273)15x-7x+30=110(274)95x-25x-2.8=11.2(275)(4x-13)÷23=1(276)11x-7x-12=36(277)2(2.5x+1.6)=28.2(278)(14x+13)÷3=23(279)x÷7=12(280)3.4x-2.1x-0.6=22.8(281)51+x=55(282)1.9+1.3x=21.4(283)17.3-5.7x=5.9(284)13(x-33)=130(285)9.7-x=9.2(286)6x=132(287)x+3.8=13.3(288)10.5÷x=2.1(289)x-41=24(290)1.1x+2.2x-1.9=31.1(291)12x+5x+42=297(292)15x-10x+29=84(293)0.4x+4.3x+4.3=84.2(294)5x÷4=10(295)1.1x=14.3(296)9.9-x=4.1(297)9x+2x+3=80(298)38x+8×0.5=23(299)7x+15x=264(300)(9.4x-3.1)÷9=10.1(301)9.8x+7.1x-4.3=164.7(302)5(24x-10)=190(303)52+x=126(304)7+75x=22(305)2.3x-0.4×38=3.2(306)(12x+36)÷6=44(307)165÷x=5(308)46+x=142(309)178-15x=28(310)0.2x-4.9=5.5(311)133-27x=79(312)5.3x-1.6x+0.7=56.2(313)5x+9x+9=191(314)46+65x=241(315)86÷x=43(316)8.7-0.8x=6.3(317)3.6x+2.8=17.2(318)6.4+52x=22(319)x÷9=0.2(320)(3.7x-5.3)÷9=2.7(321)x+32=100(322)0.4x+1=10.6(323)93-8x=53(324)6x=4.8(325)85-x=55(326)0.4x+1.4=16.2(327)15x+19x-38=268(328)6.1x+2.6x=104.4(329)(6.6x+8)÷2=10.6(330)6x+5x=22(331)4.2x+2.8x+4.9=116.9(332)10x-5x-2=18(333)2(x+31)=120(334)7x-52=53(335)11.9+5x=22.9(336)2x+3.3=16.9(337)0.4x+1.9×6=24.6(338)92-x=51(339)52x+35x-3.2=162.1(340)47x-8×0.9=2.2(341)3x-2x-4.9=23.1(342)0.8x-2.7=11.7(343)19x-4.1=13(344)7x-5x=20(345)18.6-0.2x=18(346)21x+17=122(347)19.5+5.5x=36(348)(2x-2)÷4=12(349)9.1-x=1.4(350)x+1=6.9(351)x-8.6=1.3(352)x-3.7=1.4(353)83x+98x+3.3=148.1(354)24(0.8x-2.8)=28.8(355)10x-4x+18=30(356)0.9x-1.6×4=6.2(357)18x+5.7=21.9(358)0.8x+0.4x+3.3=32.1(359)4x=8.8(360)5.3+0.2x=8.9(361)53x+57x+0.6=44.6(362)x-2.1=6.3(363)11(0.4x-1)=24.2(364)(7x-20)÷47=3(365)x-11=80(366)68-x=60(367)2(6x+5)=46(368)12x-3x=144(369)30x-4.5=10.5(370)x-2.9=1.3(371)19x-4x-48=72(372)2.5+x=9.3(373)17x+2×19=208(374)37+30x=217(375)7(0.5x-6)=38.5(376)4.1x-3.5x-3.6=1.2(377)x-0.2=2.9(378)2.4x-0.8x=22.4(379)3.5x-0.3x=76.8(380)0.7x÷4=2.1(381)1.2x=13.2(382)x÷47=0.2(383)147-18x=39(384)164÷x=4(385)18x+4x+27=247(386)0.2x=17.8(387)(7.3x+5.6)÷12=2.9(388)0.4x+1.2x=113.6(389)2x÷24=0.8(390)11.5-34x=4.7(391)3x+41=98(392)11+0.3x=24.2(393)4x-3.1=8.9(394)3(19x-12)=78(395)8.2+x=14.4(396)55-2x=39(397)97-x=11(398)x÷55=3(399)0.9x+5.4=24.3(400)72÷x=9(401)(8.9x-0.4)÷4=17.7(402)3x+1.4=11(403)91x-24x-2.4=57.9(404)(8x-2)÷15=2(405)2.6x-2.2x+4=16.4(406)0.2x+5.4=23.8(407)1.5x÷65=0.3(408)4.7x-0.6x=65.6(409)11+4.9x=30.6(410)6x-3.2=12.4(411)26x+1.3=14.3(412)8.1-x=2.1(413)2.2x-1.9x=9(414)x÷14=7(415)2(9x+42)=192(416)47x+4.4=18.5(417)14x=182(418)x÷45=0.4(419)8.2÷x=4.1(420)16x+38×4=248(421)15x+3×4.3=32.4(422)4(2x-4)=168(423)8.4÷x=0.3(424)6x+10x-4=60(425)x-10=81(426)14.7-0.4x=11.9(427)x÷19=0.2(428)x+7.2=7.7(429)10x-8x+25=39(430)0.7x+1.4=20.3(431)165-7x=32(432)5x-4×1.1=6.6(433)9.4x-2.1x-0.5=57.9(434)1.3x-1x+2=22.7(435)17x÷2=34(436)17.3-4x=15.3(437)8.5x+0.9x-2.5=100.9(438)(8x+17)÷43=3(439)17x-7x+21=101(440)6(0.6x+5)=40.8(441)2(4x+1)=42(442)40x÷12=10(443)4x-40=52(444)5+x=9.6(445)54x=162(446)6x-21=51(447)28x-16×0.7=5.6(448)17x-8x+6=60(449)8.4x+1.1x=95(450)(5x+5)÷4=30(451)3(0.6x+5.9)=35.7(452)13x-6x=63(453)8.4÷x=4.2(454)7x-2x=105(455)4(5x-6)=76(456)27x÷12=9(457)(4.3x-7.6)÷2=30.6(458)3.9x+4.7x=129(459)0.5x-1.8=2.2(460)58x+5.5=17.1(461)6.7-9x=4.9(462)5.5+3x=19.9(463)87+x=100(464)0.9x+8.2x=54.6(465)8(2x+6)=144(466)0.4x+3.9×2=17.4(467)3x÷5=1.2(468)8.5x-0.7x=85.8(469)31+14x=73(470)2.7x-2.2x-4.4=13.6(471)27x-8×14=50(472)5x-3x=74(473)10x-3x+0.4=10.9(474)5.4x-5.1=5.7(475)13x+8x-1=148.1(476)4.8-x=2.8(477)16x-5x+44=132(478)4x+11x-38=67(479)2x-14×0.2=4(480)18.6-3x=1.2(481)18.9+1.2x=35.7(482)x÷2=0.2(483)(17x-19)÷8=4(484)(13x+47)÷5=38(485)21-x=19(486)15x-3x-12=120(487)(4.4x+7.6)÷3=26(488)3(6x+30)=198(489)71x-38x+1.8=21.6(490)19.1-11x=16.9(491)9x-59×2=17(492)2.1+x=4.1(493)42-x=15(494)3(2x-14)=84(495)17.4-23x=8.2(496)2(0.5x-0.2)=44.6(497)36x-3x+3.1=42.7(498)5.9x-1.9x-4.8=43.2(499)82x+96x-1.9=87.1(500)1.8x÷9=1.2(501)(1.6x+6.4)÷2=12(502)2x+14x=144(503)x+54=152(504)8.5x-1.1x+0.2=66.8(505)5.4+x=8.7(506)(2.3x+9.7)÷2=19.8(507)46x-23x-2=23.3(508)2.7x+7.4x-4.5=25.8(509)7.2x-1.9x+0.3=16.2(510)25x+5×40=275(511)8x÷4=2.2(512)(4.5x-2.4)÷8=4.2(513)3.8x-3.3x-4.2=8.8(514)12.5-0.8x=10.1(515)5x-17×7=36(516)6x+5×2.9=18.7(517)4.5x+4.8x+0.4=149.2(518)x÷6=2.8(519)2.7x÷81=0.2(520)x-2.9=5.2(521)3x-11=139(522)77x+36x-1.9=133.7(523)1.8x÷2=4.5(524)(8x+26)÷37=2(525)x+3=64(526)58x÷87=0.2(527)x-59=34(528)28x÷14=1.4(529)5x+6×25=290(530)2(3x-9.1)=17.8(531)15.6÷x=2.6(532)91-x=26(533)41x÷82=0.2(534)23+2x=153(535)16x+10x=130(536)x÷49=0.2(537)3.1x-0.8x=32.2(538)x-51=22(539)x+7.2=12(540)6.9x-0.7x-1.9=66.3参考答案(1)x=0.5(2)x=26(3)x=1(4)x=7.4(5)x=2(6)x=1.9(7)x=25(8)x=1.7(9)x=4(10)x=5(11)x=1.1(12)x=0.2(13)x=3(14)x=37(15)x=2.3(16)x=10(17)x=4(18)x=51(19)x=3(20)x=2(21)x=2.1(22)x=51(23)x=76(24)x=74(25)x=10(26)x=10(27)x=5(28)x=4(29)x=4(30)x=2(31)x=0.6(32)x=18(33)x=23(34)x=6(35)x=2(36)x=41(37)x=8(38)x=0.5(39)x=4(40)x=4.9(41)x=3(42)x=10(43)x=6(44)x=3(45)x=34(46)x=0.3(47)x=9(48)x=50(49)x=11(50)x=5.3(51)x=5(52)x=2(53)x=36(54)x=7(55)x=39(56)x=2.8(57)x=9.8(58)x=0.3(59)x=5(60)x=3(61)x=0.2(62)x=0.9(63)x=1.7(64)x=5(65)x=2.1(66)x=9.1(67)x=16(68)x=3(69)x=53(70)x=2(71)x=3.1(72)x=4(73)x=1.3(74)x=5(75)x=45(76)x=14(77)x=17.6(78)x=7.4(79)x=0.2(80)x=6(81)x=50(82)x=5(83)x=0.4(84)x=1.1(85)x=9(86)x=68(87)x=7(88)x=35(89)x=11(90)x=6(91)x=0.5(92)x=30(93)x=2.7(94)x=70(95)x=1(96)x=49(97)x=16(98)x=24(99)x=2(100)x=14(101)x=0.5(102)x=3(103)x=9(104)x=4(105)x=7(106)x=0.4(107)x=13(108)x=12(109)x=8.1(110)x=93(111)x=0.7(112)x=57(113)x=4(114)x=3(115)x=98(116)x=0.3(117)x=5(118)x=23(119)x=56(120)x=7(121)x=26(122)x=2(123)x=11(124)x=0.5(125)x=53(126)x=17(127)x=11(128)x=41(129)x=24(130)x=0.4(131)x=16(132)x=22(133)x=18(134)x=4(135)x=3(136)x=2.1(137)x=56(138)x=7(139)x=105(140)x=7(141)x=80(142)x=4(143)x=6(144)x=4.4(145)x=40(146)x=3(147)x=29(148)x=7(149)x=22(150)x=144(151)x=8(152)x=29(153)x=0.6(154)x=11(155)x=129(156)x=77(157)x=11(158)x=0.6(159)x=16(160)x=14(161)x=16(162)x=7(163)x=4(164)x=4.9(165)x=32(166)x=21(167)x=65(168)x=5.2(169)x=2.7(170)x=3(171)x=17(172)x=92(173)x=3.2(174)x=3(175)x=10(176)x=3.7(177)x=3(178)x=3(179)x=18(180)x=4(181)x=25(182)x=1.4(183)x=4.4(184)x=41(185)x=5(186)x=3(187)x=0.4(188)x=23(189)x=8.5(190)x=5(191)x=7(192)x=3(193)x=1.5(194)x=77(195)x=1.9(196)x=16(197)x=1.5(198)x=13(199)x=3(200)x=0.2(201)x=4.8(202)x=5(203)x=0.6(204)x=3.2(205)x=2(206)x=22(207)x=4.8(208)x=0.5(209)x=6(210)x=42(211)x=63(212)x=64(213)x=4(214)x=0.5(215)x=11(216)x=2(217)x=10(218)x=9.9(219)x=6(220)x=0.9(221)x=39(222)x=7(223)x=35(224)x=18(225)x=14(226)x=2(227)x=3.7(228)x=3(229)x=14(230)x=0.2(231)x=6(232)x=10(233)x=20(234)x=7(235)x=6(236)x=16(237)x=1.1(238)x=12(239)x=3.8(240)x=182(241)x=102(242)x=19(243)x=10(244)x=21(245)x=1.7(246)x=27(247)x=9(248)x=0.5(249)x=46(250)x=31(251)x=12(252)x=14(253)x=59(254)x=17(255)x=1.9(256)x=5(257)x=9(258)x=98(259)x=0.7(260)x=27(261)x=0.4(262)x=4(263)x=140(264)x=3(265)x=3(266)x=0.2(267)x=1.2(268)x=2(269)x=2.1(270)x=36(271)x=8(272)x=9(273)x=10(274)x=0.2(275)x=9(276)x=12(277)x=5(278)x=4(279)x=84(280)x=18(281)x=4(282)x=15(283)x=2(284)x=43(285)x=0.5(286)x=22(287)x=9.5(288)x=5(289)x=65(290)x=10(291)x=15(292)x=11(293)x=17(294)x=8(295)x=13(296)x=5.8(297)x=7(298)x=0.5(299)x=12(300)x=10(301)x=10(302)x=2(303)x=74(304)x=0.2(305)x=8(306)x=19(307)x=33(308)x=96(309)x=10(310)x=52(311)x=2(312)x=15(313)x=13(314)x=3(315)x=2(316)x=3(317)x=4(318)x=0.3(319)x=1.8(320)x=8(321)x=68(322)x=24(323)x=5(324)x=0.8(325)x=30(326)x=37(327)x=9(328)x=12(329)x=2(330)x=2(331)x=16(332)x=4(333)x=29(334)x=15(335)x=2.2(336)x=6.8(337)x=33(338)x=41(339)x=1.9(340)x=0.2(341)x=28(342)x=18(343)x=0.9(344)x=10(345)x=3(346)x=5(347)x=3(348)x=25(349)x=7.7(350)x=5.9(351)x=9.9(352)x=5.1(353)x=0.8(354)x=5(355)x=2(356)x=14(357)x=0.9(358)x=24(359)x=2.2(360)x=18(361)x=0.4(362)x=8.4(363)x=8(364)x=23(365)x=91(366)x=8(367)x=3(368)x=16(369)x=0.5(370)x=4.2(371)x=8(372)x=6.8(373)x=10(374)x=6(375)x=23(376)x=8(377)x=3.1(378)x=14(379)x=24(380)x=12(381)x=11(382)x=9.4(383)x=6(384)x=41(385)x=10(386)x=89(387)x=4(388)x=71(389)x=9.6(390)x=0.2(391)x=19(392)x=44(393)x=3