五年级数学(方程)习题及答案

五年级数学(方程)习题及答案(1)x+31=80(2)x+3=49(3)x+79=176(4)x+52=107(5)x+72=167(6)x+62=138(7)x+80=125(8)x+38=106(9)x+35=86(10)x-82=16(11)x-32=63(12)x-24=62(13)x-60=14(14)x-51=12(15)x-9=23(16)x-48=25(17)x-21=14(18)x-67=23(19)x+5.9=13.1(20)x+2.2=10.6(21)x+3.7=4.4(22)x+3.2=11.3(23)x+8.5=13.7(24)x+8.2=15.3(25)x+9.3=16.9(26)x+2.4=3.2(27)x+6.9=16.6(28)x-2.1=6.1(29)x-1.2=5.5(30)x-1.1=6.8(31)x-6=2.9(32)x-0.3=7.9(33)x-5.7=4(34)x-1.2=5.2(35)x-1.6=5.1(36)x-3.3=2(37)96+x=128(38)66+x=131(39)15+x=47(40)69+x=145(41)16+x=96(42)16+x=100(43)79+x=103(44)91+x=96(45)85+x=92(46)47-x=45(47)89-x=37(48)92-x=49(49)57-x=48(50)68-x=47(51)85-x=59(52)82-x=71(53)92-x=56(54)77-x=45(55)1.6+x=7.3(56)0.9+x=9.9(57)5.4+x=7.8(58)8.1+x=14(59)5.9+x=10.6(60)6.5+x=12.7(61)4.4+x=12(62)1+x=7.7(63)1+x=5.9(64)7.1-x=3.6(65)9.7-x=8.9(66)9.2-x=5.6(67)9.7-x=3.5(68)9.5-x=3(69)5.5-x=4.4(70)6.2-x=6(71)4.4-x=2.4(72)9.2-x=4.4(73)30x=150(74)11x=198(75)2x=106(76)2x=138(77)13x=104(78)46x=184(79)23x=161(80)74x=148(81)3x=102(82)2.4x=14.4(83)0.2x=5.6(84)8.2x=16.4(85)1.4x=7(86)2.8x=5.6(87)2.3x=6.9(88)0.9x=13.5(89)2.1x=14.7(90)0.2x=13.2(91)49x=19.6(92)6x=14.4(93)29x=11.6(94)17x=5.1(95)69x=13.8(96)56x=16.8(97)3x=11.1(98)16x=17.6(99)77x=15.4(100)94÷x=47(101)196÷x=4(102)161÷x=23(103)84÷x=21(104)100÷x=25(105)20÷x=10(106)132÷x=12(107)48÷x=24(108)84÷x=7(109)12.8÷x=3.2(110)15.6÷x=0.2(111)13.2÷x=3.3(112)15.2÷x=1.9(113)8.7÷x=0.3(114)13.8÷x=4.6(115)14÷x=0.4(116)15.4÷x=1.1(117)12.8÷x=0.2(118)x÷24=4(119)x÷64=3(120)x÷57=2(121)x÷11=10(122)x÷4=8(123)x÷5=29(124)x÷5=9(125)x÷32=4(126)x÷9=18(127)x÷11=1.5(128)x÷24=0.3(129)x÷26=0.7(130)x÷73=0.2(131)x÷6=1.1(132)x÷7=2.4(133)x÷12=0.7(134)x÷12=0.9(135)x÷43=0.4(136)35x+32=207(137)5x+17=27(138)26x+20=124(139)81x+37=199(140)2x+28=84(141)11x+29=150(142)10x+52=122(143)9x+15=51(144)64x+11=139(145)8x-14=106(146)2x-12=24(147)22x-55=143(148)60x-57=63(149)20x-18=22(150)7x-27=106(151)10x-49=51(152)9x-49=23(153)7x-22=174(154)3x+4.2=7.5(155)17x+1.8=17.1(156)4x+4.4=23.2(157)2x+3.1=16.9(158)3x+5.5=23.2(159)16x+2.2=21.4(160)12x+3.4=15.4(161)6x+5.4=21.6(162)23x+2.7=7.3(163)0.5x+1.3=13.3(164)0.6x+3.2=21.8(165)3.6x+3.4=21.4(166)0.3x+1.9=16.9(167)0.6x+5.7=17.1(168)0.3x+2=11.9(169)2.1x+1.1=5.3(170)0.6x+1.8=3.6(171)0.3x+1.3=18.7(172)6x-4.6=10.4(173)99x-1.2=18.6(174)10x-3.7=11.3(175)30x-2=16(176)25x-5.8=6.7(177)5x-1.8=5.2(178)3x-2.1=9.6(179)37x-5.3=9.5(180)24x-1.5=8.1(181)1.2x-1.3=8.3(182)1.4x-2.1=4.9(183)1.5x-5.8=9.2(184)0.7x-5=13.2(185)1.9x-2.8=4.8(186)5.2x-4.3=11.3(187)0.5x-3.5=2.5(188)1.6x-3.4=6.2(189)0.2x-3.5=4.3(190)153+32x=281(191)43+7x=176(192)24+34x=160(193)145+16x=321(194)99+2x=275(195)181+26x=233(196)199+39x=394(197)93+2x=197(198)48+5x=68(199)41-2x=25(200)89-11x=12(201)170-56x=58(202)120-18x=12(203)184-86x=12(204)123-4x=63(205)168-11x=58(206)174-36x=66(207)189-19x=37(208)3.3+1.8x=14.1(209)10.1+0.8x=22.1(210)16.1+0.5x=35.6(211)8.1+1x=21.1(212)7.2+3.4x=14(213)17.4+0.7x=20.9(214)6.9+1.6x=24.5(215)16.3+1.6x=21.1(216)14.6+0.2x=17.2(217)8.6+2x=25.4(218)7.9+6x=26.5(219)12.1+12x=28.9(220)11.8+8x=31.8(221)3.9+11x=16(222)1.8+10x=19.8(223)9.5+16x=25.5(224)7.5+20x=11.5(225)14.4+2x=31(226)10.6-0.2x=7.2(227)15.9-0.2x=5.3(228)17.5-1x=2.5(229)19.6-7.8x=4(230)12.9-5x=2.9(231)18.3-3.4x=11.5(232)17.3-1.2x=8.9(233)11-0.2x=5.6(234)17-0.7x=5.1(235)17-12x=7.4(236)14.5-6x=1.3(237)12.7-15x=2.2(238)8.3-5x=7.3(239)9.5-3x=8.6(240)18.1-8x=3.7(241)15.4-4x=2.2(242)12.6-2x=12(243)8.2-4x=5(244)60x÷90=2(245)8x÷6=24(246)28x÷4=21(247)3x÷6=31(248)16x÷4=28(249)8x÷22=4(250)2x÷18=11(251)2x÷3=24(252)9x÷18=4(253)1.8x÷15=0.6(254)0.2x÷5=1(255)0.8x÷32=0.5(256)0.3x÷4=3.3(257)1.9x÷38=0.2(258)6.3x÷6=2.1(259)5.4x÷36=0.3(260)0.9x÷6=0.3(261)0.2x÷16=0.4(262)2x÷3=3.2(263)66x÷11=1.8(264)18x÷30=0.6(265)99x÷33=0.6(266)56x÷42=0.4(267)6x÷48=0.3(268)2x÷7=1.6(269)2x÷8=2.2(270)84x÷8=2.1(271)3x+4x=315(272)13x+3x=96(273)2x+5x=63(274)14x+9x=184(275)13x+12x=50(276)4x+5x=243(277)18x+14x=224(278)18x+2x=60(279)2x+5x=217(280)17x-6x=22(281)14x-10x=16(282)17x-12x=30(283)9x-4x=95(284)14x-8x=72(285)11x-7x=40(286)19x-16x=27(287)9x-5x=16(288)12x-5x=56(289)0.4x+1.5x=45.6(290)7.8x+6.5x=128.7(291)5.6x+1.4x=112(292)3x+2.1x=168.3(293)6.2x+8x=28.4(294)2.8x+4x=54.4(295)5.6x+0.5x=42.7(296)6.7x+8.7x=92.4(297)1.1x+8.1x=27.6(298)9.9x-8.4x=12(299)7.2x-6.6x=7.8(300)4.8x-2.8x=10(301)8.5x-3.9x=50.6(302)9x-5.2x=26.6(303)3.6x-1.1x=50(304)8.7x-2.3x=70.4(305)6.8x-4.1x=8.1(306)8.6x-7.9x=5.6(307)2x+5x+44=317(308)19x+2x+2=149(309)8x+6x+5=173(310)11x+10x+35=413(311)2x+6x+45=309(312)6x+14x+18=158(313)6x+13x+40=135(314)19x+17x+31=103(315)2x+4x+8=92(316)3x+17x-37=123(317)3x+2x-2=268(318)10x+6x-23=169(319)8x+6x-46=234(320)3x+14x-8=26(321)18x+19x-10=249(322)6x+3x-34=164(323)3x+4x-9=243(324)14x+12x-44=86(325)11x-2x+35=107(326)10x-2x+46=70(327)13x-11x+26=50(328)5x-3x+4=16(329)7x-3x+45=77(330)5x-2x+8=74(331)16x-12x+29=53(332)17x-4x+27=92(333)17x-3x+47=145(334)15x-4x-5=28(335)11x-2x-31=113(336)5x-2x-21=69(337)9x-2x-49=70(338)15x-6x-35=10(339)10x-7x-21=18(340)14x-4x-35=55(341)6x-4x-10=40(342)12x-3x-16=74(343)2x+4.8x+4.7=18.3(344)5.6x+5.4x+4.3=103.3(345)6.3x+6.5x+4=29.6(346)2.6x+1.2x+0.3=91.5(347)6x+3.3x+0.5=65.6(348)4x+3.4x+3.5=33.1(349)1.5x+1x+0.5=30.5(350)8.1x+4.1x+1.3=111.1(351)2.5x+4.9x+2=61.2(352)76x+40x+4.8=74.4(353)56x+32x+2.4=134.4(354)16x+13x+2.1=109.4(355)43x+4x+0.4=47.4(356)4x+7x+4.9=83(357)2x+8x+4.7=94.7(358)80x+48x+0.2=38.6(359)63x+60x+3.7=40.6(360)58x+26x+2=18.8(361)1.4x+1x-0.9=11.1(362)3.2x+6.8x-4.5=65.5(363)1.8x+0.4x-0.7=36.7(364)0.4x+2x-3.7=20.3(365)8.1x+8.6x-1.8=181.9(366)1.9x+0.5x-0.6=59.4(367)5.7x+7.3x-1.6=24.4(368)3.5x+6.4x-3.8=16(369)2.5x+6.1x-1.3=67.5(370)10x+4x-0.2=2.6(371)80x+16x-2.9=73.9(372)99x+11x-0.5=32.5(373)74x+27x-2.1=28.2(374)88x+70x-3.1=107.5(375)24x+85x-4.9=38.7(376)16x+12x-1=91.4(377)9x+12x-4.4=27.1(378)25x+15x-0.3=87.7(379)9.6x-3.2x+4.5=36.5(380)9.5x-8.1x+2.9=15.5(381)5.7x-2.6x+1.4=26.2(382)6.4x-1.6x+2.6=26.6(383)9.3x-0.3x+2.1=83.1(384)8.4x-7.7x+1.1=3.9(385)2.3x-1.7x+4.8=8.4(386)2.3x-1.7x+4.2=6(387)3.6x-1.2x+1=61(388)49x-37x+1.2=13.2(389)85x-70x+0.5=9.5(390)34x-25x+4.6=9.1(391)42x-33x+2.2=16.6(392)50x-22x+1=34.6(393)84x-22x+4.1=66.1(394)27x-23x+3.3=13.3(395)85x-66x+4.7=10.4(396)13x-4x+0.8=36.8(397)6.2x-5.4x-2.7=5.3(398)2.8x-1.8x-3.4=27.6(399)2.8x-1.3x-3.5=14.5(400)8.1x-0.9x-4.7=67.3(401)4.3x-3.7x-4.3=8.9(402)0.7x-0.5x-3.6=16.2(403)9.8x-8.7x-0.6=9.3(404)2.4x-0.3x-1.8=59.1(405)9.3x-0.5x-3.3=58.3(406)86x-55x-4.7=20.1(407)35x-20x-1.8=29.7(408)75x-20x-0.5=16(409)70x-39x-4.6=14(410)50x-8x-1.1=82.9(411)13x-3x-4.3=27.7(412)20x-6x-1.4=29.4(413)96x-22x-1.6=28(414)32x-21x-3.2=24.3(415)6x+4×6=216(416)22x+22×9=396(417)25x+2×87=324(418)2x+5×36=340(419)21x+39×3=180(420)17x+6×27=247(421)16x+5×32=240(422)9x+2×79=302(423)3x+33×2=144(424)29x-7×6=16(425)12x-5×8=68(426)17x-2×6=158(427)28x-21×5=35(428)29x-2×24=10(429)6x-2×34=100(430)2x-8×5=136(431)25x-4×40=40(432)2x-5×2=70(433)0.4x+1.9×4=15.2(434)0.8x+0.4×42=36.8(435)0.9x+1.9×2=12.8(436)0.5x+0.6×23=31.3(437)0.9x+2.9×3=13.2(438)0.2x+0.2×45=10.4(439)1.7x+0.2×49=14.9(440)0.5x+0.2×16=21.7(441)2.1x+0.8×6=17.4(442)20x+13×1.4=30.2(443)8x+17×0.8=23.2(444)17x+4×0.6=21.1(445)28x+6×2.9=25.8(446)27x+13×0.7=28(447)5x+16×0.5=17.5(448)2x+5×3.5=26.5(449)7x+7×2.4=21(450)3x+2×0.3=7.5(451)0.4x-3.5×2=10.6(452)0.3x-0.5×3=8.7(453)0.4x-3.6×2=3.2(454)0.7x-1.2×10=1.3(455)0.3x-0.3×30=2.1(456)2.8x-1.6×5=8.8(457)1.4x-0.2×25=4.8(458)2.5x-0.8×7=9.4(459)1x-0.2×20=13(460)25x-6×1.4=4.1(461)9x-13×0.6=11.1(462)41x-2×1.7=4.8(463)4x-6×0.5=15.4(464)46x-11×1.4=3(465)12x-10×1.2=3.6(466)6x-7×0.5=4.3(467)7x-2×4.7=5.3(468)9x-11×0.4=8.2(469)20(2x+2)=160(470)2(2x+11)=58(471)2(17x+2)=174(472)11(4x+4)=132(473)3(9x+5)=177(474)4(x+16)=104(475)2(5x+33)=116(476)6(4x+19)=186(477)4(x+3)=128(478)3(2x-40)=132(479)5(14x-21)=175(480)7(8x-34)=98(481)3(15x-19)=78(482)5(5x-33)=85(483)7(3x-31)=182(484)13(25x-39)=143(485)4(2x-5)=116(486)6(6x-10)=84(487)3(0.3x+4.1)=40.2(488)2(0.3x+5.3)=35.2(489)2(2.3x+2.3)=32.2(490)2(1.5x+7.8)=30.6(491)2(2.8x+6.3)=29.4(492)6(0.4x+3.7)=41.4(493)6(1.9x+1.9)=34.2(494)2(x+4.6)=33.2(495)9(0.7x+3.8)=46.8(496)3(3.2x-4.9)=23.7(497)2(7.6x-2.8)=40(498)13(0.3x-4.4)=13(499)18(1.1x-0.6)=28.8(500)23(1.4x-5.4)=36.8(501)3(8.6x-6.6)=31.8(502)2(4.6x-1.8)=24(503)5(0.7x-8)=19.5(504)7(3.1x-1.6)=32.2(505)(9x+12)÷22=12(506)(3x+24)÷8=6(507)(11x+13)÷24=12(508)(6x+6)÷24=1(509)(2x+6)÷6=8(510)(15x+29)÷8=28(511)(2x+46)÷4=14(512)(15x+24)÷2=117(513)(6x+6)÷15=12(514)(10x-18)÷6=7(515)(4x-9)÷5=3(516)(10x-26)÷28=3(517)(8x-8)÷4=22(518)(10x-10)÷5=32(519)(8x-38)÷27=6(520)(14x-36)÷2=101(521)(13x-39)÷2=65(522)(13x-31)÷5=12(523)(7.1x+8.5)÷5=8.8(524)(7.6x+6)÷27=3.6(525)(8.9x+9.4)÷31=2.6(526)(3.5x+5)÷31=0.5(527)(0.9x+1.1)÷2=4.6(528)(4.6x+8.4)÷4=18.2(529)(5.2x+0.4)÷24=2.4(530)(0.5x+1.4)÷3=1.3(531)(0.8x+0.4)÷18=0.2(532)(2.8x-5.2)÷38=0.6(533)(5.9x-4.6)÷39=2(534)(7x-4.2)÷31=2.8(535)(1.2x-6)÷2=1.2(536)(4.5x-7.5)÷37=1.5(537)(1.2x-3.2)÷4=1.6(538)(5.4x-2.2)÷8=11.2(539)(0.6x-1.8)÷2=2.1(540)(6.4x-5.4)÷2=38.9参考答案(1)x=49(2)x=46(3)x=97(4)x=55(5)x=95(6)x=76(7)x=45(8)x=68(9)x=51(10)x=98(11)x=95(12)x=86(13)x=74(14)x=63(15)x=32(16)x=73(17)x=35(18)x=90(19)x=7.2(20)x=8.4(21)x=0.7(22)x=8.1(23)x=5.2(24)x=7.1(25)x=7.6(26)x=0.8(27)x=9.7(28)x=8.2(29)x=6.7(30)x=7.9(31)x=8.9(32)x=8.2(33)x=9.7(34)x=6.4(35)x=6.7(36)x=5.3(37)x=32(38)x=65(39)x=32(40)x=76(41)x=80(42)x=84(43)x=24(44)x=5(45)x=7(46)x=2(47)x=52(48)x=43(49)x=9(50)x=21(51)x=26(52)x=11(53)x=36(54)x=32(55)x=5.7(56)x=9(57)x=2.4(58)x=5.9(59)x=4.7(60)x=6.2(61)x=7.6(62)x=6.7(63)x=4.9(64)x=3.5(65)x=0.8(66)x=3.6(67)x=6.2(68)x=6.5(69)x=1.1(70)x=0.2(71)x=2(72)x=4.8(73)x=5(74)x=18(75)x=53(76)x=69(77)x=8(78)x=4(79)x=7(80)x=2(81)x=34(82)x=6(83)x=28(84)x=2(85)x=5(86)x=2(87)x=3(88)x=15(89)x=7(90)x=66(91)x=0.4(92)x=2.4(93)x=0.4(94)x=0.3(95)x=0.2(96)x=0.3(97)x=3.7(98)x=1.1(99)x=0.2(100)x=2(101)x=49(102)x=7(103)x=4(104)x=4(105)x=2(106)x=11(107)x=2(108)x=12(109)x=4(110)x=78(111)x=4(112)x=8(113)x=29(114)x=3(115)x=35(116)x=14(117)x=64(118)x=96(119)x=192(120)x=114(121)x=110(122)x=32(123)x=145(124)x=45(125)x=128(126)x=162(127)x=16.5(128)x=7.2(129)x=18.2(130)x=14.6(131)x=6.6(132)x=16.8(133)x=8.4(134)x=10.8(135)x=17.2(136)x=5(137)x=2(138)x=4(139)x=2(140)x=28(141)x=11(142)x=7(143)x=4(144)x=2(145)x=15(146)x=18(147)x=9(148)x=2(149)x=2(150)x=19(151)x=10(152)x=8(153)x=28(154)x=1.1(155)x=0.9(156)x=4.7(157)x=6.9(158)x=5.9(159)x=1.2(160)x=1(161)x=2.7(162)x=0.2(163)x=24(164)x=31(165)x=5(166)x=50(167)x=19(168)x=33(169)x=2(170)x=3(171)x=58(172)x=2.5(173)x=0.2(174)x=1.5(175)x=0.6(176)x=0.5(177)x=1.4(178)x=3.9(179)x=0.4(180)x=0.4(181)x=8(182)x=5(183)x=10(184)x=26(185)x=4(186)x=3(187)x=12(188)x=6(189)x=39(190)x=4(191)x=19(192)x=4(193)x=11(194)x=88(195)x=2(196)x=5(197)x=52(198)x=4(199)x=8(200)x=7(201)x=2(202)x=6(203)x=2(204)x=15(205)x=10(206)x=3(207)x=8(208)x=6(209)x=15(210)x=39(211)x=13(212)x=2(213)x=5(214)x=11(215)x=3(216)x=13(217)x=8.4(218)x=3.1(219)x=1.4(220)x=2.5(221)x=1.1(222)x=1.8(223)x=1(224)x=0.2(225)x=8.3(226)x=17(227)x=53(228)x=15(229)x=2(230)x=2(231)x=2(232)x=7(233)x=27(234)x=17(235)x=0.8(236)x=2.2(237)x=0.7(238)x=0.2(239)x=0.3(240)x=1.8(241)x=3.3(242)x=0.3(243)x=0.8(244)x=3(245)x=18(246)x=3(247)x=62(248)x=7(249)x=11(250)x=99(251)x=36(252)x=8(253)x=5(254)x=25(255)x=20(256)x=44(257)x=4(258)x=2(259)x=2(260)x=2(261)x=32(262)x=4.8(263)x=0.3(264)x=1(265)x=0.2(266)x=0.3(267)x=2.4(268)x=5.6(269)x=8.8(270)x=0.2(271)x=45(272)x=6(273)x=9(274)x=8(275)x=2(276)x=27(277)x=7(278)x=3(279)x=31(280)x=2(281)x=4(282)x=6(283)x=19(284)x=12(285)x=10(286)x=9(287)x=4(288)x=8(289)x=24(290)x=9(291)x=16(292)x=33(293)x=2(294)x=8(295)x=7(296)x=6(297)x=3(298)x=8(299)x=13(300)x=5(301)x=11(302)x=7(303)x=20(304)x=11(305)x=3(306)x=8(307)x=39(308)x=7(309)x=12(310)x=18(311)x=33(312)x=7(313)x=5(314)x=2(315)x=14(316)x=8(317)x=54(318)x=12(319)x=20(320)x=2(321)x=7(322)x=22(323)x=36(324)x=5(325)x=8(326)x=3(327)x=12(328)x=6(329)x=8(330)x=22(331)x=6(332)x=5(333)x=7(334)x=3(335)x=16(336)x=30(337)x=17(338)x=5(339)x=13(340)x=9(341)x=25(342)x=10(343)x=2(344)x=9(345)x=2(346)x=24(347)x=7(348)x=4(349)x=12(350)x=9(351)x=8(352)x=0.6(353)x=1.5(354)x=3.7(355)x=1(356)x=7.1(357)x=9(358)x=0.3(359)x=0.3(360)x=0.2(361)x=5(362)x=7(363)x=17(364)x=10(365)x=11(366)x=25(367)x=2(368)x=2(369)x=8(370)x=0.2(371)x=0.8(372)x=0.3(373)x=0.3(374)x=0.7(375)x=0.4(376)x=3.3(377)x=1.5(378)x=2.2(379)x=5(380)x=9(381)x=8(382)x=5(383)x=9(384)x=4(385)x=6(386)x=3(387)x=25(388)x=1(389)x=0.6(390)x=0.5(391)x=1.6