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+42=51(2)x+73=163(3)x+44=72(4)x+63=121(5)x+65=120(6)x+56=128(7)x+32=127(8)x+24=47(9)x+39=42(10)x-33=61(11)x-68=11(12)x-32=56(13)x-45=36(14)x-5=69(15)x-81=10(16)x-40=26(17)x-32=53(18)x-16=52(19)x+0.6=4.4(20)x+8.1=12(21)x+9.6=13.5(22)x+1.1=1.9(23)x+5.8=6.8(24)x+2.7=11.9(25)x+5.4=7.2(26)x+4.6=9.9(27)x+7.7=17.6(28)x-6.5=1.3(29)x-2.6=4.5(30)x-1.6=3.9(31)x-0.9=1.4(32)x-4.4=1.5(33)x-1.5=3.3(34)x-1.1=4.1(35)x-1.7=6.7(36)x-2.3=2.7(37)13+x=68(38)66+x=148(39)44+x=119(40)33+x=97(41)98+x=105(42)86+x=149(43)23+x=66(44)10+x=105(45)43+x=108(46)69-x=67(47)85-x=60(48)98-x=55(49)92-x=69(50)28-x=11(51)97-x=92(52)55-x=25(53)85-x=47(54)85-x=56(55)1.6+x=6(56)9.2+x=15.1(57)6.8+x=7.9(58)3.4+x=9.5(59)8.8+x=14.9(60)1.6+x=8.8(61)1.2+x=3.5(62)4.9+x=8.2(63)0.8+x=10.4(64)5.3-x=3.6(65)8.2-x=1.3(66)5.5-x=3.3(67)5.7-x=1.6(68)3.5-x=1.3(69)6.6-x=3.8(70)8.7-x=1.7(71)9.4-x=6.7(72)9.7-x=4(73)2x=194(74)2x=30(75)6x=138(76)14x=42(77)42x=168(78)3x=48(79)51x=102(80)2x=132(81)13x=117(82)0.2x=2.4(83)1.9x=15.2(84)0.6x=4.2(85)1.2x=12(86)1.8x=19.8(87)6x=18(88)0.8x=12.8(89)0.2x=15.2(90)0.5x=2.5(91)80x=16(92)23x=11.5(93)3x=17.1(94)24x=7.2(95)11x=12.1(96)3x=15.9(97)35x=17.5(98)9x=7.2(99)2x=19.4(100)36÷x=2(101)64÷x=32(102)78÷x=26(103)108÷x=3(104)184÷x=46(105)180÷x=20(106)77÷x=11(107)48÷x=6(108)160÷x=5(109)18.2÷x=2.6(110)5.7÷x=1.9(111)19.6÷x=0.7(112)7.2÷x=1.8(113)6.6÷x=0.2(114)14.1÷x=4.7(115)16.8÷x=1.4(116)8.8÷x=1.1(117)4.4÷x=0.4(118)x÷12=2(119)x÷33=2(120)x÷39=2(121)x÷7=28(122)x÷9=4(123)x÷23=3(124)x÷30=5(125)x÷2=34(126)x÷9=6(127)x÷12=0.8(128)x÷13=1.1(129)x÷9=1.5(130)x÷74=0.2(131)x÷70=0.2(132)x÷22=0.5(133)x÷6=2.6(134)x÷14=0.6(135)x÷89=0.2(136)3x+57=78(137)4x+59=71(138)2x+22=74(139)4x+10=210(140)98x+22=218(141)7x+49=112(142)5x+14=209(143)2x+15=83(144)6x+47=191(145)21x-27=99(146)70x-13=127(147)26x-59=19(148)6x-30=48(149)2x-58=60(150)3x-14=139(151)6x-28=98(152)17x-47=89(153)35x-18=87(154)7x+5.1=8.6(155)34x+4.1=10.9(156)7x+4.5=12.2(157)16x+3.8=15(158)9x+5=13.1(159)8x+4.4=18.8(160)2x+4.8=11.4(161)36x+3.4=21.4(162)2x+3.6=7(163)0.3x+4=21.1(164)0.2x+4.5=7.3(165)2.7x+5.6=19.1(166)1.6x+4.2=7.4(167)0.2x+3.9=5.5(168)0.3x+5.5=12.1(169)0.6x+3.6=12.6(170)0.2x+1.1=14.3(171)0.4x+4.7=10.7(172)4x-4.2=7.8(173)47x-4.9=4.5(174)88x-4.2=13.4(175)16x-2.6=3.8(176)81x-5.7=10.5(177)27x-5.6=13.3(178)5x-3=13.5(179)16x-5.7=8.7(180)46x-3.2=10.6(181)6.5x-4.4=15.1(182)1.4x-2.7=8.5(183)0.5x-5.7=3.3(184)0.5x-5.8=12.7(185)0.2x-1.8=17(186)0.5x-4.3=6.7(187)0.6x-3.1=9.5(188)1.3x-2.2=16(189)2.2x-2.3=8.7(190)51+2x=93(191)90+28x=146(192)84+2x=108(193)132+73x=278(194)97+2x=151(195)45+43x=131(196)86+48x=278(197)192+5x=222(198)20+4x=32(199)107-20x=27(200)147-21x=105(201)146-24x=98(202)154-18x=64(203)171-13x=54(204)151-9x=88(205)150-42x=66(206)172-61x=50(207)197-12x=77(208)7.3+10x=27.3(209)6.1+0.9x=8.8(210)19.5+0.4x=34.7(211)2.3+0.5x=15.3(212)7.6+5.8x=25(213)14.7+1.2x=24.3(214)1.3+5.1x=16.6(215)12.8+1.3x=31(216)10.4+0.2x=27.4(217)9.8+11x=18.6(218)10.1+8x=19.7(219)9.2+5x=17.7(220)3.3+92x=21.7(221)13.2+3x=33(222)11.1+12x=25.5(223)18.8+12x=30.8(224)15.2+4x=22.4(225)15.8+2x=27.6(226)17.6-0.4x=9.2(227)17.2-0.5x=12.7(228)18.3-7.5x=3.3(229)18.9-1.6x=2.9(230)17.3-0.8x=2.9(231)18.5-1.2x=12.5(232)18.9-1.2x=6.9(233)15.9-0.3x=13.5(234)16.9-1.1x=11.4(235)16-11x=5(236)7.5-25x=2.5(237)19-4x=18.2(238)10.6-3x=4(239)16.5-2x=9.1(240)14.4-32x=1.6(241)19.5-7x=16(242)16.3-17x=6.1(243)15.6-3x=12.9(244)15x÷10=9(245)4x÷3=44(246)3x÷9=15(247)55x÷15=11(248)20x÷15=8(249)39x÷26=6(250)3x÷15=4(251)2x÷21=6(252)6x÷4=30(253)0.5x÷16=1(254)3x÷12=1.5(255)0.8x÷10=2(256)3.6x÷18=1(257)2.6x÷6=1.3(258)0.2x÷6=1.1(259)5.2x÷4=3.9(260)0.8x÷16=1(261)1x÷30=0.3(262)48x÷72=0.2(263)8x÷72=0.2(264)20x÷5=0.8(265)11x÷22=0.5(266)2x÷10=0.3(267)78x÷39=0.4(268)15x÷3=3(269)6x÷48=0.3(270)3x÷18=0.8(271)7x+5x=168(272)15x+11x=260(273)8x+4x=168(274)12x+3x=150(275)2x+5x=84(276)16x+3x=209(277)4x+8x=192(278)5x+7x=300(279)13x+15x=196(280)15x-9x=72(281)8x-3x=120(282)18x-6x=108(283)12x-7x=65(284)6x-3x=27(285)7x-5x=56(286)16x-3x=104(287)19x-13x=54(288)15x-8x=70(289)8.3x+0.8x=100.1(290)4.6x+2.3x=117.3(291)5.5x+0.7x=31(292)2.2x+1.9x=155.8(293)3.4x+6.7x=20.2(294)3.2x+8.3x=115(295)8.7x+7.3x=176(296)0.4x+7x=59.2(297)2.4x+0.2x=46.8(298)6.4x-2.2x=33.6(299)9.2x-4.7x=27(300)0.5x-0.3x=6.4(301)9.8x-8.5x=2.6(302)2.4x-1.8x=22.2(303)5.2x-1.6x=14.4(304)6.5x-5.5x=7(305)3.9x-2.8x=2.2(306)9.5x-8.3x=7.2(307)2x+7x+2=227(308)15x+6x+49=217(309)4x+2x+11=125(310)6x+4x+43=163(311)7x+18x+24=149(312)4x+14x+44=98(313)5x+4x+33=177(314)18x+17x+9=394(315)5x+7x+27=327(316)9x+13x-7=147(317)19x+15x-28=210(318)6x+5x-2=350(319)12x+3x-16=194(320)9x+3x-31=41(321)2x+12x-15=111(322)19x+4x-4=157(323)2x+3x-25=245(324)17x+16x-33=297(325)17x-3x+7=119(326)19x-14x+13=43(327)8x-4x+12=24(328)4x-2x+48=112(329)9x-5x+17=101(330)18x-4x+6=48(331)8x-3x+22=87(332)6x-4x+44=54(333)11x-3x+48=88(334)10x-7x-26=31(335)15x-10x-17=38(336)8x-2x-41=85(337)11x-2x-40=23(338)16x-3x-36=68(339)19x-3x-48=48(340)9x-5x-41=43(341)8x-4x-24=72(342)16x-6x-7=83(343)6.3x+3.9x+1.1=92.9(344)3.3x+9.6x+3.9=107.1(345)4x+7x+4.2=158.2(346)5.8x+3.2x+3.9=111.9(347)3.8x+5.3x+2.2=65.9(348)6.4x+8.5x+3=107.3(349)2.7x+0.8x+1.9=89.4(350)4.7x+5.8x+0.3=157.8(351)3.2x+5.2x+0.6=160.2(352)28x+48x+4.4=19.6(353)46x+44x+1.2=73.2(354)3x+69x+3.2=53.6(355)68x+17x+3.6=114.1(356)16x+13x+3.3=104.8(357)96x+16x+4.4=49.2(358)63x+33x+0.3=57.9(359)49x+12x+3.7=28.1(360)25x+4x+3.5=93.4(361)6.4x+9.7x-0.7=128.1(362)2.2x+4.2x-2.2=93.8(363)1.5x+4.3x-3=78.2(364)2.2x+1.5x-0.9=28.7(365)7.3x+7.1x-1.3=70.7(366)1.1x+1.4x-2.8=109.7(367)8.6x+8x-3.3=96.3(368)6.5x+5.9x-3.4=21.4(369)8.3x+1.5x-2=56.8(370)32x+7x-1.6=95.9(371)26x+15x-1.9=6.3(372)59x+10x-1.2=33.3(373)24x+37x-3.9=81.5(374)66x+23x-3.3=32.3(375)7x+2x-2.1=87(376)39x+57x-2.3=64.9(377)73x+51x-2.4=47.2(378)8x+20x-2.5=45.1(379)6.8x-3x+1.9=51.3(380)2.8x-1x+0.3=43.5(381)3.4x-1.6x+4.5=54.9(382)0.9x-0.2x+2.4=62.6(383)5.2x-2.4x+0.7=17.5(384)1.5x-0.9x+0.2=30.8(385)9.3x-1.5x+2.1=17.7(386)5.2x-1.1x+3.5=32.2(387)8.2x-6.9x+0.9=7.4(388)92x-11x+0.5=73.4(389)76x-58x+2.1=7.5(390)56x-6x+3=73(391)39x-13x+2.3=23.1(392)79x-48x+2.4=17.9(393)28x-20x+3.4=6.6(394)60x-47x+2.9=10.7(395)80x-35x+0.8=41.3(396)65x-5x+4.3=64.3(397)5.8x-0.2x-3.5=30.1(398)3.9x-0.7x-3.4=44.6(399)8.7x-4.9x-0.4=26.2(400)3.5x-0.7x-4.5=9.5(401)2.6x-0.5x-2.3=35.5(402)3.2x-2.3x-0.9=20.7(403)4.6x-3.9x-2=7.1(404)1.2x-0.8x-0.8=7.6(405)4x-1x-1.7=55.3(406)54x-13x-4.3=65.4(407)20x-17x-2.9=12.1(408)36x-14x-1.8=24.6(409)25x-2x-1.4=33.1(410)80x-32x-3.9=20.1(411)13x-6x-3=10.3(412)91x-22x-1.5=53.7(413)53x-39x-2.1=10.5(414)54x-27x-2.2=3.2(415)14x+29×3=157(416)5x+34×2=113(417)3x+8×14=220(418)11x+2×14=116(419)19x+13×3=210(420)8x+2×70=276(421)2x+3×16=144(422)23x+10×14=278(423)24x+2×42=276(424)2x-5×6=86(425)19x-5×31=16(426)2x-15×7=69(427)4x-2×58=64(428)5x-28×2=29(429)23x-27×6=22(430)2x-2×63=22(431)7x-32×4=54(432)2x-2×44=30(433)1x+2×5=16(434)0.9x+3.6×3=18(435)0.5x+1.5×3=6.5(436)0.3x+0.3×24=9.6(437)4.7x+0.9×6=14.8(438)4.3x+1.8×3=22.6(439)0.6x+0.4×11=23(440)0.5x+0.8×19=34.2(441)0.9x+0.5×37=23.9(442)12x+12×0.9=28.8(443)22x+10×1.8=22.4(444)4x+10×1.6=34.8(445)9x+8×0.3=7.8(446)5x+9×1.3=29.2(447)6x+3×0.2=17.4(448)2x+26×0.7=20(449)13x+4×4.1=20.3(450)6x+14×1.3=36.2(451)0.3x-0.6×2=12.3(452)0.6x-0.8×15=4.8(453)0.5x-0.2×45=4(454)1.4x-0.2×3=5(455)4.7x-0.6×18=8(456)4.9x-1.1×5=14.1(457)0.2x-0.2×6=3.6(458)1.4x-0.6×2=5.8(459)1.7x-3.9×2=2.4(460)8x-17×0.3=14.1(461)28x-7×1=7(462)8x-2×2.4=2.4(463)3x-12×0.7=5.7(464)8x-5×0.6=6.6(465)3x-18×0.3=7.8(466)18x-11×0.6=7.8(467)33x-31×0.3=3.9(468)11x-7×2.1=1.8(469)3(x+31)=99(470)3(x+48)=150(471)6(x+7)=168(472)2(9x+21)=96(473)3(3x+25)=129(474)3(14x+4)=138(475)2(5x+15)=110(476)8(2x+2)=112(477)3(6x+9)=171(478)5(2x-32)=160(479)3(7x-11)=51(480)4(x-10)=96(481)3(2x-39)=123(482)10(x-21)=110(483)2(29x-27)=178(484)3(7x-39)=30(485)6(12x-44)=168(486)5(5x-39)=55(487)2(0.3x+9.1)=20(488)2(0.7x+3.7)=42.4(489)2(1.3x+3.6)=46.2(490)2(0.3x+3.3)=12(491)9(0.4x+2.5)=29.7(492)3(0.6x+6.1)=47.1(493)4(1.4x+7.4)=46.4(494)3(0.8x+0.5)=44.7(495)2(6.1x+2.3)=29(496)5(0.3x-2.1)=49.5(497)28(0.8x-7.3)=42(498)6(0.9x-7.2)=48.6(499)8(1.1x-5.4)=27.2(500)4(0.4x-7.3)=22(501)4(1.7x-7.6)=10.4(502)14(1.1x-5.8)=42(503)22(x-8)=22(504)3(3x-3.9)=33.3(505)(13x+15)÷2=66(506)(11x+37)÷41=6(507)(7x+41)÷19=4(508)(6x+16)÷2=38(509)(2x+8)÷32=1(510)(9x+21)÷8=15(511)(3x+33)÷7=15(512)(5x+33)÷36=3(513)(11x+26)÷8=6(514)(12x-28)÷2=88(515)(9x-36)÷2=9(516)(18x-9)÷9=9(517)(8x-21)÷17=11(518)(16x-14)÷2=57(519)(11x-24)÷3=69(520)(2x-16)÷2=18(521)(3x-33)÷10=3(522)(14x-3)÷27=3(523)(7.5x+3)÷3=21(524)(3.9x+5.1)÷20=2.4(525)(1.5x+8.5)÷17=2(526)(1.1x+3.5)÷2=8.9(527)(8.5x+5.2)÷12=6.1(528)(3.1x+6.6)÷32=0.4(529)(2.5x+0.2)÷17=0.6(530)(5.8x+5.6)÷2=26(531)(7.9x+2.9)÷5=14.8(532)(4.6x-4)÷18=0.8(533)(9x-8.6)÷7=5.2(534)(4.1x-0.5)÷10=6.1(535)(4.7x-5)÷38=1.6(536)(3.5x-3.2)÷2=26.4(537)(4.6x-5.7)÷5=9.9(538)(1.1x-3.7)÷21=0.4(539)(2.3x-1)÷4=3.2(540)(9.4x-9.2)÷8=10.6参考答案(1)x=9(2)x=90(3)x=28(4)x=58(5)x=55(6)x=72(7)x=95(8)x=23(9)x=3(10)x=94(11)x=79(12)x=88(13)x=81(14)x=74(15)x=91(16)x=66(17)x=85(18)x=68(19)x=3.8(20)x=3.9(21)x=3.9(22)x=0.8(23)x=1(24)x=9.2(25)x=1.8(26)x=5.3(27)x=9.9(28)x=7.8(29)x=7.1(30)x=5.5(31)x=2.3(32)x=5.9(33)x=4.8(34)x=5.2(35)x=8.4(36)x=5(37)x=55(38)x=82(39)x=75(40)x=64(41)x=7(42)x=63(43)x=43(44)x=95(45)x=65(46)x=2(47)x=25(48)x=43(49)x=23(50)x=17(51)x=5(52)x=30(53)x=38(54)x=29(55)x=4.4(56)x=5.9(57)x=1.1(58)x=6.1(59)x=6.1(60)x=7.2(61)x=2.3(62)x=3.3(63)x=9.6(64)x=1.7(65)x=6.9(66)x=2.2(67)x=4.1(68)x=2.2(69)x=2.8(70)x=7(71)x=2.7(72)x=5.7(73)x=97(74)x=15(75)x=23(76)x=3(77)x=4(78)x=16(79)x=2(80)x=66(81)x=9(82)x=12(83)x=8(84)x=7(85)x=10(86)x=11(87)x=3(88)x=16(89)x=76(90)x=5(91)x=0.2(92)x=0.5(93)x=5.7(94)x=0.3(95)x=1.1(96)x=5.3(97)x=0.5(98)x=0.8(99)x=9.7(100)x=18(101)x=2(102)x=3(103)x=36(104)x=4(105)x=9(106)x=7(107)x=8(108)x=32(109)x=7(110)x=3(111)x=28(112)x=4(113)x=33(114)x=3(115)x=12(116)x=8(117)x=11(118)x=24(119)x=66(120)x=78(121)x=196(122)x=36(123)x=69(124)x=150(125)x=68(126)x=54(127)x=9.6(128)x=14.3(129)x=13.5(130)x=14.8(131)x=14(132)x=11(133)x=15.6(134)x=8.4(135)x=17.8(136)x=7(137)x=3(138)x=26(139)x=50(140)x=2(141)x=9(142)x=39(143)x=34(144)x=24(145)x=6(146)x=2(147)x=3(148)x=13(149)x=59(150)x=51(151)x=21(152)x=8(153)x=3(154)x=0.5(155)x=0.2(156)x=1.1(157)x=0.7(158)x=0.9(159)x=1.8(160)x=3.3(161)x=0.5(162)x=1.7(163)x=57(164)x=14(165)x=5(166)x=2(167)x=8(168)x=22(169)x=15(170)x=66(171)x=15(172)x=3(173)x=0.2(174)x=0.2(175)x=0.4(176)x=0.2(177)x=0.7(178)x=3.3(179)x=0.9(180)x=0.3(181)x=3(182)x=8(183)x=18(184)x=37(185)x=94(186)x=22(187)x=21(188)x=14(189)x=5(190)x=21(191)x=2(192)x=12(193)x=2(194)x=27(195)x=2(196)x=4(197)x=6(198)x=3(199)x=4(200)x=2(201)x=2(202)x=5(203)x=9(204)x=7(205)x=2(206)x=2(207)x=10(208)x=2(209)x=3(210)x=38(211)x=26(212)x=3(213)x=8(214)x=3(215)x=14(216)x=85(217)x=0.8(218)x=1.2(219)x=1.7(220)x=0.2(221)x=6.6(222)x=1.2(223)x=1(224)x=1.8(225)x=5.9(226)x=21(227)x=9(228)x=2(229)x=10(230)x=18(231)x=5(232)x=10(233)x=8(234)x=5(235)x=1(236)x=0.2(237)x=0.2(238)x=2.2(239)x=3.7(240)x=0.4(241)x=0.5(242)x=0.6(243)x=0.9(244)x=6(245)x=33(246)x=45(247)x=3(248)x=6(249)x=4(250)x=20(251)x=63(252)x=20(253)x=32(254)x=6(255)x=25(256)x=5(257)x=3(258)x=33(259)x=3(260)x=20(261)x=9(262)x=0.3(263)x=1.8(264)x=0.2(265)x=1(266)x=1.5(267)x=0.2(268)x=0.6(269)x=2.4(270)x=4.8(271)x=14(272)x=10(273)x=14(274)x=10(275)x=12(276)x=11(277)x=16(278)x=25(279)x=7(280)x=12(281)x=24(282)x=9(283)x=13(284)x=9(285)x=28(286)x=8(287)x=9(288)x=10(289)x=11(290)x=17(291)x=5(292)x=38(293)x=2(294)x=10(295)x=11(296)x=8(297)x=18(298)x=8(299)x=6(300)x=32(301)x=2(302)x=37(303)x=4(304)x=7(305)x=2(306)x=6(307)x=25(308)x=8(309)x=19(310)x=12(311)x=5(312)x=3(313)x=16(314)x=11(315)x=25(316)x=7(317)x=7(318)x=32(319)x=14(320)x=6(321)x=9(322)x=7(323)x=54(324)x=10(325)x=8(326)x=6(327)x=3(328)x=32(329)x=21(330)x=3(331)x=13(332)x=5(333)x=5(334)x=19(335)x=11(336)x=21(337)x=7(338)x=8(339)x=6(340)x=21(341)x=24(342)x=9(343)x=9(344)x=8(345)x=14(346)x=12(347)x=7(348)x=7(349)x=25(350)x=15(351)x=19(352)x=0.2(353)x=0.8(354)x=0.7(355)x=1.3(356)x=3.5(357)x=0.4(358)x=0.6(359)x=0.4(360)x=3.1(361)x=8(362)x=15(363)x=14(364)x=8(365)x=5(366)x=45(367)x=6(368)x=2(369)x=6(370)x=2.5(371)x=0.2(372)x=0.5(373)x=1.4(374)x=0.4(375)x=9.9(376)x=0.7(377)x=0.4(378)x=1.7(379)x=13(380)x=24(381)x=28(382)x=86(383)x=6(384)x=51(385)x=2(386)x=7(387)x=5(388)x=0.9(389)x=0.3(390)x=1.4(391)x=0.8