五年级数学(方程)专项练习题及答案

五年级数学(方程)专项练习题及答案(1)x+34=125(2)x+49=77(3)x+16=95(4)x+92=186(5)x+86=112(6)x+28=80(7)x+45=110(8)x+20=105(9)x+77=99(10)x-13=29(11)x-9=87(12)x-13=26(13)x-73=24(14)x-82=13(15)x-3=13(16)x-40=12(17)x-31=63(18)x-52=29(19)x+5=14(20)x+7.8=13.9(21)x+1.8=9.1(22)x+2.7=7(23)x+9.1=13.7(24)x+9.7=10.3(25)x+5.6=14.5(26)x+6.8=7.1(27)x+2.7=7.6(28)x-1.6=2.7(29)x-4.9=1.7(30)x-6.4=1(31)x-1.5=7.3(32)x-0.4=7.4(33)x-1.8=1.6(34)x-5.6=1.6(35)x-2.7=1(36)x-0.5=5.4(37)49+x=111(38)24+x=58(39)80+x=127(40)79+x=144(41)63+x=125(42)49+x=54(43)95+x=144(44)78+x=175(45)84+x=113(46)86-x=66(47)31-x=20(48)52-x=27(49)82-x=51(50)36-x=23(51)48-x=32(52)94-x=53(53)56-x=36(54)84-x=71(55)9.5+x=11.2(56)6.9+x=12.9(57)1.2+x=7(58)0.5+x=5.9(59)1.7+x=7.8(60)7.4+x=13.5(61)4.9+x=8.7(62)4.2+x=6.5(63)9.9+x=17.5(64)5.4-x=5(65)7.2-x=5.6(66)9.4-x=1.1(67)8.9-x=8.5(68)9.4-x=1.8(69)5.9-x=2.9(70)3.5-x=1.1(71)4-x=3.8(72)5.1-x=3.6(73)2x=100(74)4x=56(75)52x=104(76)65x=195(77)5x=150(78)2x=118(79)8x=136(80)48x=144(81)30x=150(82)1.1x=13.2(83)0.8x=4.8(84)0.3x=2.4(85)0.2x=2.6(86)1.6x=9.6(87)0.4x=17.2(88)1x=6(89)4.1x=8.2(90)1.2x=10.8(91)25x=20(92)4x=19.6(93)7x=2.8(94)59x=17.7(95)31x=18.6(96)2x=11.2(97)2x=10(98)27x=16.2(99)6x=13.2(100)85÷x=17(101)176÷x=22(102)168÷x=12(103)75÷x=25(104)144÷x=18(105)80÷x=8(106)90÷x=3(107)36÷x=12(108)6÷x=2(109)11.6÷x=2.9(110)8.2÷x=0.2(111)16.2÷x=0.9(112)14.7÷x=4.9(113)19.2÷x=0.8(114)8÷x=4(115)14÷x=3.5(116)6÷x=0.4(117)18.2÷x=1.3(118)x÷32=5(119)x÷93=2(120)x÷64=3(121)x÷7=18(122)x÷6=5(123)x÷23=8(124)x÷42=3(125)x÷20=8(126)x÷4=47(127)x÷18=0.9(128)x÷8=1.6(129)x÷4=1.7(130)x÷44=0.3(131)x÷7=0.6(132)x÷27=0.3(133)x÷3=4.5(134)x÷13=0.8(135)x÷38=0.2(136)2x+42=46(137)22x+26=70(138)2x+23=49(139)2x+38=212(140)32x+14=110(141)17x+19=155(142)14x+49=161(143)62x+40=226(144)4x+16=216(145)2x-22=134(146)2x-42=110(147)4x-24=16(148)4x-23=165(149)3x-25=26(150)3x-20=157(151)11x-19=14(152)32x-28=100(153)7x-52=130(154)4x+3.6=13.2(155)5x+2.7=18.7(156)28x+4.4=24(157)25x+5.4=20.4(158)3x+4.5=13.8(159)23x+4.4=11.3(160)3x+2.8=4.9(161)2x+5.6=9.6(162)58x+4.6=22(163)2.1x+1=13.6(164)8.3x+2.2=18.8(165)0.2x+3.4=21(166)3.1x+5.1=14.4(167)5.1x+2.8=13(168)0.7x+5.8=12.1(169)4.5x+4.4=17.9(170)8.9x+2.1=19.9(171)9.1x+1=19.2(172)2x-4.9=3.9(173)2x-4.1=8.9(174)19x-4.3=7.1(175)13x-1.6=4.9(176)37x-5=9.8(177)27x-3.5=12.7(178)51x-2.5=12.8(179)3x-1.2=2.1(180)7x-1.8=9.4(181)0.2x-4.7=14.1(182)1x-2.5=4.5(183)0.2x-2.4=6.6(184)1.3x-3.5=4.3(185)1.8x-5.4=9(186)4.4x-2.5=10.7(187)1.4x-4.6=10.8(188)4.2x-2.9=13.9(189)0.7x-1.5=6.9(190)161+9x=332(191)20+3x=92(192)144+6x=294(193)143+2x=149(194)191+19x=267(195)66+85x=236(196)162+3x=219(197)134+8x=190(198)177+5x=357(199)185-45x=50(200)56-2x=18(201)102-35x=32(202)128-49x=30(203)88-3x=82(204)178-22x=134(205)163-9x=55(206)180-17x=10(207)178-42x=10(208)15.2+0.2x=23.6(209)14.4+0.3x=18.6(210)12.7+0.5x=21.2(211)5.6+0.2x=24.4(212)1.1+0.8x=20.3(213)16.4+0.3x=26.6(214)4.8+0.7x=19.5(215)1.3+0.7x=18.8(216)4.2+5.5x=20.7(217)7.1+13x=17.5(218)12.3+8x=20.3(219)9.2+45x=18.2(220)15.6+4x=16.4(221)5.6+2x=7.8(222)19.7+3x=20.9(223)16.5+5x=35.5(224)16.7+38x=35.7(225)13.9+21x=30.7(226)8.8-0.2x=7.2(227)19.7-0.9x=8(228)17.7-0.8x=8.9(229)10.7-0.3x=8.9(230)4.7-1.2x=2.3(231)15.8-3.6x=8.6(232)14.7-0.3x=13.8(233)17-5.7x=5.6(234)15.7-0.9x=8.5(235)16.8-9x=13.2(236)13.6-14x=10.8(237)6.1-2x=3.7(238)10.1-4x=7.3(239)14.4-19x=8.7(240)15.3-4x=2.1(241)17.6-37x=10.2(242)16.3-25x=6.3(243)14.7-6x=5.1(244)6x÷9=8(245)26x÷2=39(246)3x÷2=15(247)2x÷7=14(248)3x÷31=6(249)4x÷8=14(250)12x÷39=4(251)58x÷29=4(252)32x÷8=8(253)0.3x÷6=1.2(254)0.6x÷12=0.9(255)0.2x÷33=0.4(256)3.6x÷15=1.2(257)0.2x÷5=3(258)0.3x÷9=0.4(259)1.6x÷2=2.4(260)1.6x÷24=0.6(261)0.3x÷24=0.2(262)12x÷6=2.8(263)32x÷24=0.8(264)8x÷38=0.4(265)30x÷15=1(266)45x÷9=1(267)24x÷4=4.8(268)9x÷3=4.5(269)15x÷39=0.5(270)10x÷85=0.2(271)3x+5x=272(272)15x+12x=243(273)16x+7x=253(274)5x+9x=112(275)16x+17x=132(276)4x+7x=242(277)2x+8x=220(278)18x+12x=180(279)15x+5x=240(280)4x-2x=22(281)14x-9x=25(282)6x-2x=84(283)12x-6x=84(284)17x-3x=84(285)10x-3x=84(286)11x-2x=54(287)6x-4x=18(288)8x-4x=20(289)9.1x+6.4x=93(290)4.2x+7.1x=45.2(291)7.6x+6.4x=112(292)1.2x+0.6x=59.4(293)3x+4.7x=154(294)4.2x+2.4x=85.8(295)7.1x+5.1x=61(296)3.5x+2.8x=56.7(297)2.3x+2.5x=33.6(298)8.5x-5.1x=30.6(299)0.7x-0.4x=5.1(300)3.4x-2.7x=10.5(301)5.6x-4.3x=11.7(302)6.7x-1.7x=65(303)3.2x-2.9x=1.2(304)6.6x-5.3x=3.9(305)5.4x-3.5x=13.3(306)5.8x-4.1x=8.5(307)15x+13x+7=119(308)9x+10x+32=355(309)13x+9x+15=279(310)3x+2x+8=43(311)5x+4x+22=202(312)2x+3x+40=130(313)2x+5x+39=109(314)17x+19x+10=118(315)18x+15x+19=250(316)2x+3x-27=193(317)8x+19x-46=116(318)19x+15x-5=301(319)7x+3x-41=129(320)7x+2x-46=26(321)15x+8x-12=218(322)9x+18x-35=73(323)5x+6x-47=52(324)14x+5x-38=95(325)18x-16x+30=46(326)7x-3x+5=97(327)11x-5x+25=133(328)14x-8x+38=74(329)12x-2x+23=133(330)9x-5x+20=60(331)15x-6x+40=85(332)17x-5x+35=107(333)8x-2x+30=132(334)6x-4x-7=57(335)16x-10x-2=40(336)12x-4x-32=40(337)15x-9x-23=43(338)19x-9x-26=34(339)9x-2x-19=86(340)19x-14x-9=31(341)19x-10x-3=51(342)10x-7x-12=30(343)7.9x+4x+1.1=96.3(344)5x+3.2x+3.1=109.7(345)2.3x+0.6x+2.7=11.4(346)8x+9.7x+4.5=75.3(347)1.9x+1.2x+0.4=43.8(348)2.2x+6.9x+3.4=85.3(349)9.8x+2.1x+3.6=110.7(350)0.8x+0.6x+3.6=75(351)1.7x+2.6x+1.2=95.8(352)4x+5x+3.9=75(353)21x+82x+0.2=82.6(354)24x+90x+3.5=60.5(355)78x+43x+3.5=112.4(356)79x+29x+2.6=132.2(357)79x+11x+3.4=48.4(358)20x+50x+0.8=126.8(359)3x+49x+1.2=84.4(360)93x+71x+3.7=151.3(361)1.1x+2.4x-2.7=28.8(362)6.6x+9.8x-0.3=114.5(363)0.4x+3.2x-2.3=33.7(364)0.4x+1x-1.4=25.2(365)2.3x+2.2x-4.2=76.8(366)9.8x+7.3x-1.6=66.8(367)2.8x+4.5x-4.1=61.6(368)6.6x+4x-1.2=51.8(369)3.9x+1.5x-4.6=54.8(370)8x+50x-1.2=74.2(371)24x+21x-4.9=139.1(372)22x+25x-0.8=112(373)43x+83x-2.9=123.1(374)58x+51x-3.1=160.4(375)4x+89x-4.1=23.8(376)70x+82x-4.2=178.2(377)36x+49x-4.1=165.9(378)15x+68x-0.6=24.3(379)7.4x-2.9x+4.5=31.5(380)4.3x-1.3x+0.7=45.7(381)6.9x-1.7x+4.7=61.9(382)5.7x-3.7x+2.6=12.6(383)9.2x-6.6x+1.1=8.9(384)9.9x-8.4x+2.9=8.9(385)7.3x-6.8x+0.8=5.8(386)8.5x-7.1x+2.2=12(387)0.7x-0.5x+4.6=23.2(388)32x-15x+1=28.2(389)21x-11x+2.8=45.8(390)32x-5x+4.1=28.4(391)9x-3x+2.2=29.2(392)88x-50x+4.4=34.8(393)34x-30x+1.5=13.1(394)40x-20x+0.3=24.3(395)34x-15x+1.9=51.3(396)72x-64x+0.8=6.4(397)6.4x-5.4x-3.7=2.3(398)7.5x-0.3x-4.4=67.6(399)6.3x-2.5x-0.6=10.8(400)9.5x-4.6x-3.2=40.9(401)2.6x-0.9x-4=2.8(402)3.7x-2.2x-3.8=5.2(403)2.2x-1.9x-2.8=8.9(404)1.3x-0.9x-0.4=17.2(405)4.1x-0.4x-2.9=82.2(406)59x-33x-1.6=11.4(407)43x-30x-3.4=26.5(408)29x-4x-0.4=59.6(409)34x-18x-3.1=38.5(410)35x-14x-3.5=13.3(411)55x-52x-2.4=1.2(412)33x-2x-3.9=64.3(413)37x-31x-2.1=9.9(414)55x-20x-0.7=16.8(415)13x+4×16=168(416)12x+3×53=279(417)2x+72×2=334(418)4x+2×36=144(419)4x+64×3=344(420)5x+13×14=202(421)21x+4×38=236(422)9x+18×9=333(423)14x+21×4=112(424)2x-3×54=18(425)2x-2×24=40(426)21x-32×2=104(427)12x-9×2=162(428)3x-20×3=132(429)2x-77×2=40(430)5x-5×7=75(431)16x-2×35=10(432)6x-2×13=46(433)1.2x+0.5×37=28.1(434)4.4x+3.2×6=36.8(435)2.6x+0.4×15=13.8(436)2.4x+0.7×6=18.6(437)1.5x+3.2×3=27.6(438)3.1x+0.7×8=11.8(439)2.8x+1.5×6=14.6(440)0.3x+0.8×2=14.5(441)3.9x+0.6×31=38.1(442)16x+16×1.1=35.2(443)14x+4×1.6=24.6(444)6x+3×3.7=17.7(445)4x+6×2.5=27.8(446)2x+8×2.3=20.4(447)8x+6×2=17.6(448)3x+24×0.6=17.1(449)8x+32×0.2=24.8(450)5x+7×1.8=28.6(451)3.4x-0.8×9=9.8(452)0.3x-0.4×6=3(453)0.4x-1.7×6=8.6(454)0.4x-0.3×24=3.2(455)0.8x-3×3=10.2(456)0.6x-0.7×4=9.2(457)0.7x-0.2×45=4.3(458)1.8x-0.2×16=7.6(459)0.4x-2.2×3=9(460)40x-2×0.3=11.4(461)19x-2×2.3=8.7(462)44x-3×2.5=1.3(463)21x-3×0.6=15(464)5x-9×0.5=2.5(465)9x-20×0.2=2.3(466)3x-2×4=3.4(467)4x-14×0.8=8.4(468)15x-4×1.3=8.3(469)3(x+4)=51(470)2(19x+17)=148(471)4(x+18)=104(472)2(14x+34)=124(473)3(x+25)=132(474)2(4x+32)=80(475)6(x+2)=30(476)2(6x+17)=166(477)4(3x+17)=188(478)9(8x-26)=198(479)8(21x-46)=136(480)8(28x-34)=176(481)4(2x-32)=96(482)2(15x-22)=196(483)2(26x-34)=192(484)2(x-14)=36(485)4(2x-30)=168(486)2(18x-13)=190(487)20(0.3x+1.2)=42(488)6(0.2x+2.8)=32.4(489)4(0.7x+1.2)=24.4(490)2(7.7x+5.1)=41(491)3(0.9x+2.9)=41.1(492)3(0.8x+5.3)=49.5(493)2(0.5x+0.7)=24.4(494)13(0.2x+0.4)=33.8(495)2(0.5x+3.1)=34.2(496)2(8.3x-7.2)=18.8(497)2(0.8x-5.6)=32(498)3(1.9x-4.1)=21.9(499)2(1.8x-6.3)=48.6(500)2(3x-8.7)=6.6(501)20(0.6x-1.2)=24(502)16(0.6x-1.9)=27.2(503)4(0.3x-2.7)=15.6(504)2(7.1x-9.7)=9(505)(4x+48)÷28=3(506)(18x+30)÷3=40(507)(9x+10)÷20=5(508)(9x+4)÷10=4(509)(8x+24)÷24=5(510)(13x+44)÷40=5(511)(8x+42)÷22=11(512)(5x+45)÷3=20(513)(6x+7)÷11=5(514)(8x-12)÷20=1(515)(9x-6)÷16=12(516)(11x-21)÷4=14(517)(14x-20)÷4=9(518)(12x-32)÷4=40(519)(18x-18)÷6=3(520)(8x-12)÷4=43(521)(4x-14)÷5=10(522)(8x-28)÷25=4(523)(5.5x+1.1)÷2=8.8(524)(3.8x+0.8)÷5=3.2(525)(8x+8.8)÷4=20.2(526)(1.8x+5.2)÷25=1(527)(8.4x+8)÷5=10(528)(9.8x+6.6)÷34=2.5(529)(1.4x+5.7)÷3=3.3(530)(0.6x+9.4)÷22=0.7(531)(6.5x+1.3)÷39=1.7(532)(5.6x-2.1)÷7=4.5(533)(3.4x-0.4)÷3=18(534)(8.5x-9.9)÷19=4.4(535)(3.5x-9.4)÷6=6.6(536)(4.4x-7.2)÷4=2.6(537)(3.3x-0.3)÷25=2.1(538)(3.4x-4)÷2=8.2(539)(4.6x-7.8)÷19=0.8(540)(4.6x-3.4)÷3=14.2参考答案(1)x=91(2)x=28(3)x=79(4)x=94(5)x=26(6)x=52(7)x=65(8)x=85(9)x=22(10)x=42(11)x=96(12)x=39(13)x=97(14)x=95(15)x=16(16)x=52(17)x=94(18)x=81(19)x=9(20)x=6.1(21)x=7.3(22)x=4.3(23)x=4.6(24)x=0.6(25)x=8.9(26)x=0.3(27)x=4.9(28)x=4.3(29)x=6.6(30)x=7.4(31)x=8.8(32)x=7.8(33)x=3.4(34)x=7.2(35)x=3.7(36)x=5.9(37)x=62(38)x=34(39)x=47(40)x=65(41)x=62(42)x=5(43)x=49(44)x=97(45)x=29(46)x=20(47)x=11(48)x=25(49)x=31(50)x=13(51)x=16(52)x=41(53)x=20(54)x=13(55)x=1.7(56)x=6(57)x=5.8(58)x=5.4(59)x=6.1(60)x=6.1(61)x=3.8(62)x=2.3(63)x=7.6(64)x=0.4(65)x=1.6(66)x=8.3(67)x=0.4(68)x=7.6(69)x=3(70)x=2.4(71)x=0.2(72)x=1.5(73)x=50(74)x=14(75)x=2(76)x=3(77)x=30(78)x=59(79)x=17(80)x=3(81)x=5(82)x=12(83)x=6(84)x=8(85)x=13(86)x=6(87)x=43(88)x=6(89)x=2(90)x=9(91)x=0.8(92)x=4.9(93)x=0.4(94)x=0.3(95)x=0.6(96)x=5.6(97)x=5(98)x=0.6(99)x=2.2(100)x=5(101)x=8(102)x=14(103)x=3(104)x=8(105)x=10(106)x=30(107)x=3(108)x=3(109)x=4(110)x=41(111)x=18(112)x=3(113)x=24(114)x=2(115)x=4(116)x=15(117)x=14(118)x=160(119)x=186(120)x=192(121)x=126(122)x=30(123)x=184(124)x=126(125)x=160(126)x=188(127)x=16.2(128)x=12.8(129)x=6.8(130)x=13.2(131)x=4.2(132)x=8.1(133)x=13.5(134)x=10.4(135)x=7.6(136)x=2(137)x=2(138)x=13(139)x=87(140)x=3(141)x=8(142)x=8(143)x=3(144)x=50(145)x=78(146)x=76(147)x=10(148)x=47(149)x=17(150)x=59(151)x=3(152)x=4(153)x=26(154)x=2.4(155)x=3.2(156)x=0.7(157)x=0.6(158)x=3.1(159)x=0.3(160)x=0.7(161)x=2(162)x=0.3(163)x=6(164)x=2(165)x=88(166)x=3(167)x=2(168)x=9(169)x=3(170)x=2(171)x=2(172)x=4.4(173)x=6.5(174)x=0.6(175)x=0.5(176)x=0.4(177)x=0.6(178)x=0.3(179)x=1.1(180)x=1.6(181)x=94(182)x=7(183)x=45(184)x=6(185)x=8(186)x=3(187)x=11(188)x=4(189)x=12(190)x=19(191)x=24(192)x=25(193)x=3(194)x=4(195)x=2(196)x=19(197)x=7(198)x=36(199)x=3(200)x=19(201)x=2(202)x=2(203)x=2(204)x=2(205)x=12(206)x=10(207)x=4(208)x=42(209)x=14(210)x=17(211)x=94(212)x=24(213)x=34(214)x=21(215)x=25(216)x=3(217)x=0.8(218)x=1(219)x=0.2(220)x=0.2(221)x=1.1(222)x=0.4(223)x=3.8(224)x=0.5(225)x=0.8(226)x=8(227)x=13(228)x=11(229)x=6(230)x=2(231)x=2(232)x=3(233)x=2(234)x=8(235)x=0.4(236)x=0.2(237)x=1.2(238)x=0.7(239)x=0.3(240)x=3.3(241)x=0.2(242)x=0.4(243)x=1.6(244)x=12(245)x=3(246)x=10(247)x=49(248)x=62(249)x=28(250)x=13(251)x=2(252)x=2(253)x=24(254)x=18(255)x=66(256)x=5(257)x=75(258)x=12(259)x=3(260)x=9(261)x=16(262)x=1.4(263)x=0.6(264)x=1.9(265)x=0.5(266)x=0.2(267)x=0.8(268)x=1.5(269)x=1.3(270)x=1.7(271)x=34(272)x=9(273)x=11(274)x=8(275)x=4(276)x=22(277)x=22(278)x=6(279)x=12(280)x=11(281)x=5(282)x=21(283)x=14(284)x=6(285)x=12(286)x=6(287)x=9(288)x=5(289)x=6(290)x=4(291)x=8(292)x=33(293)x=20(294)x=13(295)x=5(296)x=9(297)x=7(298)x=9(299)x=17(300)x=15(301)x=9(302)x=13(303)x=4(304)x=3(305)x=7(306)x=5(307)x=4(308)x=17(309)x=12(310)x=7(311)x=20(312)x=18(313)x=10(314)x=3(315)x=7(316)x=44(317)x=6(318)x=9(319)x=17(320)x=8(321)x=10(322)x=4(323)x=9(324)x=7(325)x=8(326)x=23(327)x=18(328)x=6(329)x=11(330)x=10(331)x=5(332)x=6(333)x=17(334)x=32(335)x=7(336)x=9(337)x=11(338)x=6(339)x=15(340)x=8(341)x=6(342)x=14(343)x=8(344)x=13(345)x=3(346)x=4(347)x=14(348)x=9(349)x=9(350)x=51(351)x=22(352)x=7.9(353)x=0.8(354)x=0.5(355)x=0.9(356)x=1.2(357)x=0.5(358)x=1.8(359)x=1.6(360)x=0.9(361)x=9(362)x=7(363)x=10(364)x=19(365)x=18(366)x=4(367)x=9(368)x=5(369)x=11(370)x=1.3(371)x=3.2(372)x=2.4(373)x=1(374)x=1.5(375)x=0.3(376)x=1.2(377)x=2(378)x=0.3(379)x=6(380)x=15(381)x=11(382)x=5(383)x=3(384)x=4(385)x=10(386)x=7(387)x=93(388)x=1.6(389)x=4.3(390)x=0.9(391)x=4.5