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+49=145(2)x+8=90(3)x+26=50(4)x+16=83(5)x+69=139(6)x+3=21(7)x+42=71(8)x+54=141(9)x+60=110(10)x-25=63(11)x-50=46(12)x-59=18(13)x-21=44(14)x-56=20(15)x-39=54(16)x-44=20(17)x-60=15(18)x-15=40(19)x+8.5=17.1(20)x+0.5=8.6(21)x+2.9=6.5(22)x+0.6=5.6(23)x+5.1=13.4(24)x+1.1=3.5(25)x+4.9=13.4(26)x+7.3=11.3(27)x+2.5=3.4(28)x-0.8=3.6(29)x-5.2=3.8(30)x-2.1=5.3(31)x-3.1=3(32)x-0.3=7.7(33)x-1.1=6.5(34)x-7.9=1.2(35)x-2.9=2.2(36)x-1.4=1.6(37)63+x=112(38)20+x=43(39)78+x=169(40)98+x=144(41)17+x=68(42)87+x=116(43)6+x=40(44)30+x=32(45)88+x=104(46)70-x=42(47)48-x=46(48)89-x=61(49)51-x=41(50)76-x=33(51)57-x=10(52)92-x=54(53)83-x=50(54)74-x=28(55)5.9+x=11.6(56)0.4+x=6.9(57)1.3+x=6.3(58)8.1+x=9.1(59)4.4+x=8.5(60)7.3+x=16(61)1.9+x=2.3(62)2.6+x=5.7(63)7.2+x=16.9(64)6.8-x=3.4(65)6.7-x=4.1(66)7.3-x=3.4(67)9.5-x=6.5(68)5.6-x=5.3(69)4.6-x=2.8(70)6.2-x=3.2(71)8.9-x=7.5(72)9.7-x=1.6(73)36x=144(74)26x=78(75)50x=150(76)15x=45(77)5x=25(78)2x=88(79)3x=93(80)9x=36(81)16x=64(82)0.2x=12.2(83)0.2x=16(84)0.5x=2(85)0.5x=3.5(86)0.5x=16(87)0.5x=5(88)7.6x=15.2(89)1.1x=5.5(90)0.4x=14(91)2x=5.8(92)46x=13.8(93)2x=13.4(94)7x=3.5(95)2x=19.8(96)17x=8.5(97)46x=9.2(98)3x=1.2(99)2x=1.8(100)33÷x=3(101)110÷x=5(102)26÷x=2(103)84÷x=42(104)102÷x=3(105)117÷x=39(106)70÷x=2(107)162÷x=2(108)28÷x=4(109)9.3÷x=0.3(110)18.8÷x=0.2(111)3.3÷x=0.3(112)12.3÷x=4.1(113)17.4÷x=0.2(114)17÷x=0.2(115)11÷x=1(116)10÷x=2.5(117)14.3÷x=1.3(118)x÷7=21(119)x÷7=9(120)x÷6=15(121)x÷21=9(122)x÷25=6(123)x÷8=8(124)x÷9=16(125)x÷10=11(126)x÷2=11(127)x÷20=0.6(128)x÷10=1.6(129)x÷4=4.6(130)x÷7=1.9(131)x÷8=1.2(132)x÷15=1.2(133)x÷64=0.3(134)x÷6=0.7(135)x÷93=0.2(136)2x+33=65(137)57x+48=162(138)13x+55=198(139)13x+40=131(140)16x+46=158(141)3x+44=74(142)4x+18=202(143)33x+15=180(144)4x+42=134(145)16x-26=38(146)48x-56=40(147)12x-59=133(148)2x-15=79(149)4x-18=74(150)18x-51=21(151)2x-58=132(152)22x-40=26(153)3x-35=127(154)28x+1.3=6.9(155)4x+3=19(156)2x+3.3=20.5(157)2x+2.7=4.3(158)2x+5.1=20.3(159)4x+4.6=10.2(160)2x+3.5=13.1(161)95x+2.3=21.3(162)59x+1.3=13.1(163)0.3x+3.2=21.2(164)0.3x+3.7=23.2(165)0.7x+3.3=10.3(166)0.3x+3.3=23.1(167)2.4x+1.7=13.7(168)1.8x+4.4=17(169)0.6x+5.8=13.6(170)2.1x+2.9=7.1(171)0.2x+3.9=5.1(172)6x-1.5=12.9(173)12x-1.2=7.2(174)29x-2.1=6.6(175)2x-2.8=11.4(176)3x-2.9=5.5(177)25x-5.7=14.3(178)26x-4.6=11(179)50x-2.7=17.3(180)4x-5.5=6.1(181)1.6x-1.6=14.4(182)0.2x-3.2=8.6(183)0.5x-4.3=8.7(184)1.1x-3.8=1.7(185)0.3x-2=1.9(186)0.2x-3.2=5.8(187)1.9x-1.8=17.2(188)3.1x-1.1=11.3(189)1.9x-5.8=13.2(190)164+2x=294(191)48+2x=232(192)28+3x=184(193)153+4x=301(194)82+9x=154(195)70+7x=112(196)139+2x=279(197)70+2x=206(198)191+8x=343(199)125-22x=37(200)130-4x=30(201)196-7x=105(202)197-9x=161(203)196-13x=92(204)193-8x=17(205)92-3x=77(206)168-34x=100(207)107-7x=51(208)8+1.1x=22.3(209)9.9+3x=18.9(210)17.4+1.5x=29.4(211)13.6+0.2x=23.6(212)9.7+3x=18.7(213)3.4+0.2x=6.6(214)19+6.2x=31.4(215)9.6+4.6x=23.4(216)12.2+0.5x=13.2(217)4.5+9x=24.3(218)1.5+7x=16.2(219)17.7+5x=24.2(220)19.6+18x=37.6(221)1+2x=15.4(222)18.7+35x=25.7(223)17.7+72x=32.1(224)2.4+2x=4.2(225)16.5+5x=25(226)7.7-0.5x=2.7(227)14.9-0.2x=9.5(228)14.8-6.5x=1.8(229)5.1-0.4x=2.7(230)18.6-0.6x=11.4(231)8.6-0.2x=2.6(232)11.8-3.3x=5.2(233)13.7-2.7x=5.6(234)12.1-0.3x=8.8(235)7.7-5x=1.2(236)19.9-4x=5.5(237)9-5x=2.5(238)11-12x=2.6(239)18.9-41x=2.5(240)14.8-2x=9.4(241)18.5-68x=4.9(242)18.1-12x=10.9(243)19.2-16x=11.2(244)5x÷40=3(245)3x÷6=7(246)26x÷10=13(247)10x÷30=2(248)10x÷3=30(249)8x÷48=2(250)20x÷10=18(251)11x÷77=2(252)24x÷16=9(253)0.7x÷28=0.2(254)0.3x÷7=2.4(255)0.5x÷20=1(256)0.2x÷7=2(257)0.4x÷86=0.2(258)1.4x÷8=0.7(259)0.6x÷10=0.3(260)1.8x÷12=1.2(261)0.6x÷4=0.3(262)2x÷24=0.5(263)8x÷76=0.2(264)10x÷20=0.2(265)14x÷8=2.1(266)84x÷7=2.4(267)5x÷10=1.1(268)2x÷28=0.6(269)2x÷18=0.5(270)45x÷10=0.9(271)14x+12x=234(272)3x+6x=90(273)13x+6x=57(274)5x+7x=132(275)5x+12x=238(276)3x+4x=210(277)11x+10x=357(278)11x+5x=160(279)9x+5x=308(280)16x-8x=40(281)19x-7x=120(282)17x-11x=60(283)14x-3x=44(284)17x-14x=30(285)14x-7x=56(286)10x-5x=90(287)15x-6x=27(288)16x-8x=72(289)5.7x+4.2x=99(290)5.6x+8.6x=113.6(291)7.3x+9.5x=100.8(292)6.5x+3.2x=135.8(293)5.7x+3.1x=149.6(294)7.3x+6.8x=126.9(295)0.7x+5.8x=13(296)0.9x+3.5x=114.4(297)1.2x+4.1x=121.9(298)4.1x-0.6x=28(299)6.3x-0.4x=29.5(300)4x-1.8x=8.8(301)9.1x-7.3x=9(302)9.9x-7.1x=16.8(303)1.5x-0.4x=70.4(304)2.7x-2.4x=10.2(305)2x-1.8x=6.2(306)1.1x-0.3x=63.2(307)14x+4x+12=120(308)6x+4x+14=284(309)5x+4x+2=173(310)9x+5x+18=46(311)19x+14x+8=140(312)19x+10x+7=239(313)3x+2x+27=157(314)8x+7x+10=70(315)3x+6x+31=292(316)14x+5x-11=103(317)10x+11x-23=271(318)5x+14x-25=203(319)10x+17x-4=158(320)10x+11x-12=324(321)4x+3x-21=308(322)7x+15x-34=208(323)9x+10x-16=250(324)9x+7x-13=35(325)11x-6x+23=48(326)18x-14x+21=37(327)4x-2x+49=121(328)5x-2x+23=89(329)19x-8x+49=82(330)7x-5x+13=45(331)8x-5x+26=62(332)16x-12x+13=33(333)14x-7x+44=128(334)8x-4x-20=44(335)17x-9x-21=19(336)12x-7x-15=65(337)13x-4x-36=36(338)15x-11x-5=43(339)10x-4x-2=34(340)8x-2x-18=66(341)8x-4x-14=46(342)17x-10x-8=13(343)1.3x+0.8x+2.4=61.2(344)0.5x+1.9x+3.4=41.8(345)7.7x+9x+0.9=67.7(346)4.5x+2.9x+1.8=24(347)2.3x+9.5x+1=71.8(348)2.8x+0.2x+2.6=80.6(349)9.3x+8.2x+4.3=39.3(350)5.4x+7.5x+2.9=28.7(351)0.4x+2.4x+0.6=25.8(352)82x+60x+2.5=158.7(353)18x+17x+1.8=113.8(354)10x+11x+1.4=177.8(355)24x+17x+4.7=58(356)48x+52x+0.2=140.2(357)34x+27x+2.5=20.8(358)9x+17x+2.1=30.7(359)31x+11x+2.2=23.2(360)14x+19x+3.3=92.4(361)8x+4x-0.3=35.7(362)9.9x+7.2x-4.5=81(363)1.6x+2.6x-1.6=128.6(364)6.5x+3.7x-3.1=139.7(365)1.9x+2.5x-4.1=88.3(366)6.9x+3.2x-0.5=50(367)3x+2.3x-1.5=136.3(368)3x+3.3x-3.9=103.2(369)9.3x+6.5x-4.1=74.9(370)34x+54x-0.3=34.9(371)10x+8x-3=29.4(372)20x+40x-3.2=8.8(373)24x+40x-2.5=112.7(374)92x+90x-1.2=53.4(375)49x+26x-2.8=139.7(376)99x+91x-4.4=109.6(377)47x+56x-2.5=100.5(378)43x+63x-4.1=154.9(379)5.9x-3x+2.1=28.2(380)3.2x-1.5x+2.1=34.4(381)6.6x-2x+2.4=25.4(382)2x-1.8x+3.4=11.6(383)2x-1.1x+4.7=8.3(384)4.6x-1.7x+3.3=38.1(385)7x-0.3x+0.8=81.2(386)4.3x-3.8x+4.9=16.4(387)6.6x-0.3x+2.1=96.6(388)88x-56x+0.8=26.4(389)97x-87x+3.6=12.6(390)67x-10x+3.9=15.3(391)53x-25x+4.3=29.5(392)40x-9x+1.8=63.8(393)43x-22x+1.3=34.9(394)54x-26x+0.5=8.9(395)24x-2x+3.4=80.4(396)57x-5x+1.8=59(397)7.5x-4.7x-2.8=33.6(398)3.2x-2.4x-2.3=22.5(399)2.1x-1.6x-1.6=4.4(400)8.1x-7.5x-4.3=2.3(401)9.6x-1.4x-0.4=81.6(402)5.7x-1.7x-3.4=48.6(403)4.1x-1.5x-0.7=9.7(404)6.8x-2.6x-3.4=17.6(405)5.3x-3.5x-4.2=10.2(406)54x-27x-4.5=9(407)89x-46x-0.6=25.2(408)53x-46x-2=7.1(409)84x-24x-3.3=44.7(410)33x-2x-2.2=13.3(411)45x-27x-1=13.4(412)95x-7x-1=87(413)56x-27x-3.6=22.5(414)95x-2x-0.5=27.4(415)13x+59×2=144(416)2x+2×52=298(417)4x+22×7=222(418)6x+8×14=232(419)4x+3×55=301(420)11x+3×4=89(421)4x+4×32=236(422)3x+9×3=48(423)5x+2×44=238(424)2x-25×2=16(425)16x-13×6=18(426)16x-2×17=30(427)17x-4×12=71(428)2x-5×15=13(429)2x-10×2=36(430)5x-2×3=109(431)20x-7×2=26(432)3x-3×39=81(433)1.1x+1×9=25.5(434)2.5x+0.7×16=26.2(435)1.7x+0.8×23=23.5(436)0.4x+0.5×13=21.7(437)0.7x+0.5×2=19.2(438)1.8x+2.3×4=25.4(439)1.3x+3.6×4=24.8(440)2.3x+3×3=13.6(441)0.2x+0.3×36=11.8(442)42x+11×1.4=23.8(443)7x+2×3.2=16.2(444)2x+12×0.5=14.4(445)2x+5×1.5=9.5(446)15x+2×0.4=5.3(447)38x+6×2.3=21.4(448)13x+27×0.3=22.4(449)5x+12×0.7=17.9(450)2x+28×0.6=17.8(451)1.3x-0.4×9=15.9(452)0.3x-2.7×2=6(453)0.6x-0.7×8=9.4(454)0.7x-0.8×18=1(455)1.3x-0.9×3=5.1(456)0.6x-0.2×27=3(457)4.4x-1×6=11.6(458)1.9x-0.5×9=6.9(459)3.6x-0.6×24=3.6(460)16x-24×0.4=8(461)3x-6×0.4=9.3(462)5x-3×3.1=6.2(463)33x-2×1.5=3.6(464)27x-17×0.2=7.4(465)21x-17×0.4=10(466)27x-3×1.3=15(467)9x-9×0.3=7.2(468)2x-10×0.3=1.6(469)2(3x+37)=182(470)17(2x+3)=119(471)2(14x+20)=180(472)2(20x+18)=116(473)3(7x+18)=117(474)3(6x+11)=105(475)4(x+25)=124(476)3(x+4)=21(477)2(22x+5)=186(478)2(14x-4)=104(479)2(2x-45)=78(480)6(5x-13)=132(481)6(3x-3)=90(482)3(9x-23)=174(483)4(24x-13)=140(484)2(10x-18)=44(485)8(2x-33)=88(486)4(6x-14)=184(487)4(0.4x+5)=44(488)2(0.7x+0.2)=25.6(489)2(2.6x+6.8)=34.4(490)3(0.9x+6)=23.4(491)5(0.6x+3.3)=22.5(492)2(4.3x+6.8)=39.4(493)7(0.6x+0.5)=45.5(494)2(0.8x+2.9)=47.4(495)2(0.8x+5.6)=30.4(496)10(x-2.9)=41(497)3(0.6x-0.4)=42(498)2(4.8x-7.2)=14.4(499)24(0.4x-6.2)=33.6(500)14(x-9.4)=22.4(501)5(2.4x-6.3)=28.5(502)2(1.4x-5)=29.2(503)15(0.2x-1.5)=28.5(504)6(1.9x-4.2)=9(505)(8x+48)÷8=12(506)(8x+18)÷29=2(507)(2x+14)÷22=3(508)(9x+4)÷23=8(509)(9x+33)÷26=3(510)(2x+36)÷10=6(511)(9x+34)÷17=11(512)(5x+17)÷9=13(513)(15x+20)÷49=5(514)(12x-28)÷2=88(515)(11x-23)÷6=31(516)(x-2)÷2=8(517)(7x-7)÷7=4(518)(13x-30)÷7=18(519)(17x-28)÷6=18(520)(18x-28)÷5=34(521)(18x-10)÷19=8(522)(13x-13)÷9=26(523)(4.2x+7.2)÷24=2.4(524)(4.4x+5.2)÷6=10.4(525)(5.5x+1.5)÷25=2.7(526)(9.8x+1.1)÷5=6.1(527)(5.2x+5.3)÷3=8.7(528)(1.7x+0.6)÷2=7.1(529)(4.4x+3.2)÷34=1(530)(0.3x+6.9)÷8=1.2(531)(1.6x+4.4)÷2=3.8(532)(8.7x-1)÷2=43(533)(5.1x-6.8)÷17=5(534)(3.2x-0.5)÷7=4.5(535)(7.6x-3.8)÷19=4.6(536)(9.4x-7.8)÷6=12.8(537)(3.2x-7.8)÷22=1.1(538)(5.1x-7.8)÷11=8.1(539)(0.3x-0.9)÷21=0.2(540)(5.5x-1.2)÷27=2.4参考答案(1)x=96(2)x=82(3)x=24(4)x=67(5)x=70(6)x=18(7)x=29(8)x=87(9)x=50(10)x=88(11)x=96(12)x=77(13)x=65(14)x=76(15)x=93(16)x=64(17)x=75(18)x=55(19)x=8.6(20)x=8.1(21)x=3.6(22)x=5(23)x=8.3(24)x=2.4(25)x=8.5(26)x=4(27)x=0.9(28)x=4.4(29)x=9(30)x=7.4(31)x=6.1(32)x=8(33)x=7.6(34)x=9.1(35)x=5.1(36)x=3(37)x=49(38)x=23(39)x=91(40)x=46(41)x=51(42)x=29(43)x=34(44)x=2(45)x=16(46)x=28(47)x=2(48)x=28(49)x=10(50)x=43(51)x=47(52)x=38(53)x=33(54)x=46(55)x=5.7(56)x=6.5(57)x=5(58)x=1(59)x=4.1(60)x=8.7(61)x=0.4(62)x=3.1(63)x=9.7(64)x=3.4(65)x=2.6(66)x=3.9(67)x=3(68)x=0.3(69)x=1.8(70)x=3(71)x=1.4(72)x=8.1(73)x=4(74)x=3(75)x=3(76)x=3(77)x=5(78)x=44(79)x=31(80)x=4(81)x=4(82)x=61(83)x=80(84)x=4(85)x=7(86)x=32(87)x=10(88)x=2(89)x=5(90)x=35(91)x=2.9(92)x=0.3(93)x=6.7(94)x=0.5(95)x=9.9(96)x=0.5(97)x=0.2(98)x=0.4(99)x=0.9(100)x=11(101)x=22(102)x=13(103)x=2(104)x=34(105)x=3(106)x=35(107)x=81(108)x=7(109)x=31(110)x=94(111)x=11(112)x=3(113)x=87(114)x=85(115)x=11(116)x=4(117)x=11(118)x=147(119)x=63(120)x=90(121)x=189(122)x=150(123)x=64(124)x=144(125)x=110(126)x=22(127)x=12(128)x=16(129)x=18.4(130)x=13.3(131)x=9.6(132)x=18(133)x=19.2(134)x=4.2(135)x=18.6(136)x=16(137)x=2(138)x=11(139)x=7(140)x=7(141)x=10(142)x=46(143)x=5(144)x=23(145)x=4(146)x=2(147)x=16(148)x=47(149)x=23(150)x=4(151)x=95(152)x=3(153)x=54(154)x=0.2(155)x=4(156)x=8.6(157)x=0.8(158)x=7.6(159)x=1.4(160)x=4.8(161)x=0.2(162)x=0.2(163)x=60(164)x=65(165)x=10(166)x=66(167)x=5(168)x=7(169)x=13(170)x=2(171)x=6(172)x=2.4(173)x=0.7(174)x=0.3(175)x=7.1(176)x=2.8(177)x=0.8(178)x=0.6(179)x=0.4(180)x=2.9(181)x=10(182)x=59(183)x=26(184)x=5(185)x=13(186)x=45(187)x=10(188)x=4(189)x=10(190)x=65(191)x=92(192)x=52(193)x=37(194)x=8(195)x=6(196)x=70(197)x=68(198)x=19(199)x=4(200)x=25(201)x=13(202)x=4(203)x=8(204)x=22(205)x=5(206)x=2(207)x=8(208)x=13(209)x=3(210)x=8(211)x=50(212)x=3(213)x=16(214)x=2(215)x=3(216)x=2(217)x=2.2(218)x=2.1(219)x=1.3(220)x=1(221)x=7.2(222)x=0.2(223)x=0.2(224)x=0.9(225)x=1.7(226)x=10(227)x=27(228)x=2(229)x=6(230)x=12(231)x=30(232)x=2(233)x=3(234)x=11(235)x=1.3(236)x=3.6(237)x=1.3(238)x=0.7(239)x=0.4(240)x=2.7(241)x=0.2(242)x=0.6(243)x=0.5(244)x=24(245)x=14(246)x=5(247)x=6(248)x=9(249)x=12(250)x=9(251)x=14(252)x=6(253)x=8(254)x=56(255)x=40(256)x=70(257)x=43(258)x=4(259)x=5(260)x=8(261)x=2(262)x=6(263)x=1.9(264)x=0.4(265)x=1.2(266)x=0.2(267)x=2.2(268)x=8.4(269)x=4.5(270)x=0.2(271)x=9(272)x=10(273)x=3(274)x=11(275)x=14(276)x=30(277)x=17(278)x=10(279)x=22(280)x=5(281)x=10(282)x=10(283)x=4(284)x=10(285)x=8(286)x=18(287)x=3(288)x=9(289)x=10(290)x=8(291)x=6(292)x=14(293)x=17(294)x=9(295)x=2(296)x=26(297)x=23(298)x=8(299)x=5(300)x=4(301)x=5(302)x=6(303)x=64(304)x=34(305)x=31(306)x=79(307)x=6(308)x=27(309)x=19(310)x=2(311)x=4(312)x=8(313)x=26(314)x=4(315)x=29(316)x=6(317)x=14(318)x=12(319)x=6(320)x=16(321)x=47(322)x=11(323)x=14(324)x=3(325)x=5(326)x=4(327)x=36(328)x=22(329)x=3(330)x=16(331)x=12(332)x=5(333)x=12(334)x=16(335)x=5(336)x=16(337)x=8(338)x=12(339)x=6(340)x=14(341)x=15(342)x=3(343)x=28(344)x=16(345)x=4(346)x=3(347)x=6(348)x=26(349)x=2(350)x=2(351)x=9(352)x=1.1(353)x=3.2(354)x=8.4(355)x=1.3(356)x=1.4(357)x=0.3(358)x=1.1(359)x=0.5(360)x=2.7(361)x=3(362)x=5(363)x=31(364)x=14(365)x=21(366)x=5(367)x=26(368)x=17(369)x=5(370)x=0.4(371)x=1.8(372)x=0.2(373)x=1.8(374)x=0.3(375)x=1.9(376)x=0.6(377)x=1(378)x=1.5(379)x=9(380)x=19(381)x=5(382)x=41(383)x=4(384)x=12(385)x=12(386)x=23(387)x=15(388)x=0.8(389)x=0.9(390)x=0.2(391)x=0.9(392)