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+27=55(2)x+80=110(3)x+91=120(4)x+32=75(5)x+7=70(6)x+24=90(7)x+81=175(8)x+44=133(9)x+62=127(10)x-37=11(11)x-27=70(12)x-21=77(13)x-21=36(14)x-28=68(15)x-33=18(16)x-5=55(17)x-60=14(18)x-59=12(19)x+7.8=15.1(20)x+2.2=9.3(21)x+9.2=17.3(22)x+7.3=13.3(23)x+3.4=10.2(24)x+8=15.3(25)x+1.6=10.4(26)x+5.4=6.6(27)x+5.1=12.3(28)x-0.3=9.5(29)x-5=4.3(30)x-6.9=1.5(31)x-3.9=5.6(32)x-5=1.7(33)x-0.7=2.2(34)x-5.8=1.4(35)x-2.6=2.8(36)x-1.1=5.1(37)97+x=157(38)55+x=88(39)87+x=137(40)88+x=145(41)71+x=168(42)71+x=89(43)95+x=161(44)61+x=73(45)86+x=180(46)30-x=11(47)93-x=18(48)69-x=17(49)62-x=25(50)78-x=54(51)44-x=19(52)94-x=20(53)67-x=61(54)91-x=13(55)7.2+x=16.3(56)0.3+x=1.5(57)5.9+x=15.7(58)9.7+x=14.5(59)2.9+x=11.2(60)2.1+x=5.7(61)6.9+x=16.2(62)4.4+x=12.9(63)9.4+x=14.1(64)9.2-x=8.3(65)8.1-x=6(66)6.9-x=4.7(67)1.7-x=1(68)7.7-x=5.9(69)6.9-x=6.2(70)9.1-x=6.1(71)7.4-x=2.6(72)6.7-x=3.8(73)4x=68(74)8x=184(75)9x=36(76)13x=78(77)2x=98(78)12x=60(79)6x=114(80)19x=190(81)11x=66(82)2.8x=8.4(83)1.8x=16.2(84)6x=18(85)0.5x=17.5(86)1.6x=4.8(87)0.4x=4.8(88)0.8x=9.6(89)1.5x=13.5(90)0.4x=8(91)2x=3.6(92)17x=18.7(93)6x=7.8(94)4x=8(95)35x=10.5(96)15x=6(97)4x=6.4(98)11x=19.8(99)3x=8.1(100)184÷x=4(101)143÷x=13(102)94÷x=2(103)76÷x=19(104)198÷x=3(105)168÷x=6(106)42÷x=14(107)178÷x=2(108)68÷x=2(109)17÷x=3.4(110)15.4÷x=0.2(111)6.8÷x=0.2(112)18÷x=0.6(113)12÷x=3(114)14.4÷x=0.8(115)14.4÷x=0.2(116)12.3÷x=4.1(117)3.6÷x=0.2(118)x÷12=8(119)x÷19=6(120)x÷99=2(121)x÷4=13(122)x÷44=4(123)x÷8=16(124)x÷16=9(125)x÷14=9(126)x÷4=18(127)x÷10=0.9(128)x÷45=0.2(129)x÷12=1(130)x÷15=0.8(131)x÷3=3.2(132)x÷6=2.8(133)x÷6=0.8(134)x÷10=1.9(135)x÷17=0.3(136)6x+25=55(137)24x+12=108(138)2x+21=129(139)21x+36=162(140)2x+11=23(141)22x+57=167(142)42x+48=216(143)7x+50=162(144)2x+22=62(145)13x-15=180(146)52x-58=98(147)17x-18=135(148)10x-22=148(149)15x-14=181(150)17x-14=156(151)29x-32=84(152)42x-50=34(153)93x-14=172(154)65x+5.3=24.8(155)29x+4=9.8(156)12x+2.2=13(157)2x+3.3=7.1(158)7x+4.2=10.5(159)10x+5=9(160)23x+2.5=16.3(161)2x+3.4=12.8(162)30x+5.2=20.2(163)1.9x+2.7=21.7(164)0.4x+5.7=22.9(165)0.3x+2.7=20.7(166)0.3x+4.5=16.5(167)2.3x+1.9=13.4(168)1.5x+2.5=16(169)0.5x+3.9=20.4(170)1.7x+3.2=10(171)0.4x+1.1=16.7(172)2x-1.2=14.8(173)28x-3.6=10.4(174)79x-3.1=12.7(175)79x-1=14.8(176)4x-2.9=6.3(177)25x-3.6=8.9(178)60x-2.8=9.2(179)73x-4.3=10.3(180)11x-3.4=14.2(181)0.5x-4.9=5.6(182)2.6x-1.7=6.1(183)0.2x-1.4=16.4(184)0.9x-4.9=9.5(185)0.4x-1.6=8(186)4.7x-4.8=14(187)0.3x-4.9=1.7(188)0.4x-2.8=12(189)0.5x-2=12(190)176+59x=353(191)68+28x=180(192)117+61x=239(193)180+5x=260(194)190+4x=306(195)186+5x=271(196)162+3x=327(197)164+3x=188(198)166+13x=322(199)131-7x=33(200)160-20x=80(201)87-2x=69(202)152-2x=60(203)139-7x=48(204)190-2x=144(205)126-3x=75(206)193-4x=169(207)59-8x=11(208)6.6+0.5x=15.6(209)1.9+1.7x=20.6(210)14.4+1.1x=29.8(211)14.4+1.6x=25.6(212)18.3+1.4x=36.5(213)9.6+0.9x=27.6(214)12.6+1.6x=30.2(215)4.6+0.4x=13.8(216)2.8+2.6x=15.8(217)8+2x=20.2(218)16.2+2x=34.4(219)5.8+13x=11(220)10+58x=21.6(221)1.1+6x=17.3(222)8.6+2x=17.8(223)11.8+23x=25.6(224)1.1+9x=6.5(225)11.1+31x=20.4(226)19.3-0.2x=18.1(227)15.3-0.2x=1.7(228)10-3.4x=3.2(229)5.2-1.2x=1.6(230)16.7-1.6x=13.5(231)9-0.2x=3.2(232)16.7-0.8x=9.5(233)17.1-3.2x=10.7(234)18.9-5.9x=1.2(235)14-7x=4.9(236)10.5-17x=7.1(237)15.6-2x=7.4(238)18.6-39x=3(239)19.9-8x=2.3(240)17.1-18x=2.7(241)17.7-22x=8.9(242)19.7-51x=9.5(243)10.1-21x=1.7(244)12x÷36=5(245)40x÷16=5(246)30x÷3=40(247)4x÷36=5(248)16x÷72=2(249)18x÷42=3(250)16x÷4=20(251)36x÷4=18(252)28x÷4=21(253)1.8x÷81=0.2(254)0.2x÷7=1(255)3.2x÷48=0.4(256)0.2x÷26=0.6(257)0.4x÷2=4.2(258)0.2x÷6=0.3(259)1.8x÷33=0.6(260)0.4x÷16=0.7(261)0.8x÷52=0.2(262)36x÷20=0.9(263)36x÷6=2.4(264)9x÷90=0.2(265)36x÷6=1.2(266)7x÷42=0.3(267)2x÷11=0.4(268)5x÷10=1.8(269)2x÷3=2(270)16x÷8=2.2(271)11x+5x=288(272)5x+6x=110(273)4x+3x=84(274)17x+10x=54(275)4x+18x=44(276)15x+3x=234(277)7x+13x=100(278)15x+16x=310(279)19x+18x=333(280)19x-9x=30(281)14x-4x=70(282)19x-4x=30(283)10x-5x=65(284)16x-14x=12(285)14x-9x=65(286)18x-7x=88(287)4x-2x=92(288)18x-3x=75(289)1.3x+8.2x=28.5(290)1.9x+1.5x=122.4(291)7.7x+8.9x=182.6(292)2.1x+0.9x=123(293)9.8x+3.6x=93.8(294)8.9x+3.3x=122(295)3x+2.2x=124.8(296)0.3x+6.4x=67(297)7.3x+5.4x=127(298)7.6x-5.8x=16.2(299)5.5x-1.1x=79.2(300)3.1x-0.5x=78(301)6.9x-6.2x=6.3(302)2.1x-1.2x=31.5(303)5.3x-0.9x=44(304)6x-2.6x=34(305)5.2x-3.2x=18(306)6.5x-5.6x=9(307)4x+9x+2=106(308)14x+3x+47=183(309)7x+4x+28=182(310)6x+8x+28=322(311)4x+2x+15=99(312)3x+12x+37=277(313)2x+3x+31=261(314)3x+9x+49=289(315)3x+9x+40=280(316)2x+3x-14=246(317)8x+4x-7=161(318)3x+9x-27=225(319)5x+3x-17=279(320)16x+10x-13=91(321)7x+3x-25=195(322)8x+12x-37=163(323)15x+14x-8=50(324)8x+2x-9=201(325)18x-6x+23=155(326)5x-2x+20=59(327)12x-9x+16=55(328)14x-2x+27=99(329)5x-2x+15=63(330)15x-10x+36=56(331)19x-17x+8=22(332)14x-7x+8=29(333)14x-9x+8=68(334)16x-7x-23=58(335)10x-7x-12=45(336)10x-7x-12=42(337)9x-5x-11=69(338)11x-8x-4=23(339)13x-9x-13=15(340)16x-7x-16=29(341)14x-2x-33=99(342)16x-9x-13=64(343)4x+1.1x+2.2=88.9(344)4.9x+0.6x+4=103(345)9.9x+6.8x+4.2=54.3(346)3.6x+1.2x+1.1=68.3(347)2.2x+3.6x+0.9=64.7(348)0.5x+2.8x+3.8=33.5(349)4x+4.5x+3.1=113.6(350)0.6x+4.9x+1.4=56.4(351)8.4x+1.5x+0.8=40.4(352)60x+79x+0.2=111.4(353)3x+10x+0.2=114.6(354)96x+76x+1.7=36.1(355)69x+71x+4.8=60.8(356)28x+41x+1.6=105.1(357)49x+47x+1.4=30.2(358)2x+39x+3.7=44.7(359)60x+24x+0.7=25.9(360)54x+21x+4.6=124.6(361)3.1x+0.3x-1.2=63.4(362)2.7x+2.4x-4.2=148.8(363)8.9x+1.8x-3.4=82.2(364)8.3x+5.9x-3.4=138.6(365)8x+0.8x-3.9=92.9(366)3x+2.1x-2.2=69.2(367)0.3x+0.5x-1.2=54.8(368)3.7x+4.7x-3.4=21.8(369)1.4x+1.5x-2.1=24(370)14x+7x-1.8=107.4(371)93x+45x-4.6=23(372)5x+45x-2.4=92.6(373)76x+38x-0.6=33.6(374)94x+77x-1.5=66.9(375)61x+28x-3.9=94(376)79x+24x-1.3=70.8(377)20x+49x-3.6=79.2(378)29x+41x-4.1=114.9(379)1.6x-0.7x+2.2=27.4(380)1.2x-0.4x+1.8=30.6(381)3.4x-2.5x+0.7=18.7(382)9.7x-1.3x+2.4=27.6(383)6.6x-0.4x+0.6=93.6(384)8.7x-5.2x+2.4=30.4(385)1.4x-1x+3.4=26.6(386)5x-4.3x+2.4=5.2(387)3.1x-1.7x+0.7=9.1(388)34x-7x+0.7=73.6(389)33x-7x+1.5=79.5(390)82x-29x+0.8=48.5(391)82x-21x+4.5=65.5(392)50x-38x+2.4=6(393)89x-37x+3.5=45.1(394)56x-18x+4.6=27.4(395)16x-13x+2=19.1(396)25x-6x+2.8=54.1(397)5x-4.5x-2.9=7.1(398)6.8x-5.8x-4=4(399)7.3x-2.1x-3.5=53.7(400)6.4x-0.6x-1.9=38.7(401)6.5x-2.6x-2.2=13.4(402)4.1x-2.9x-4.5=19.5(403)8.9x-4.6x-4.2=8.7(404)2.6x-2.1x-0.9=4.1(405)2.2x-1.7x-2=11.5(406)97x-56x-0.3=32.5(407)10x-3x-2.8=49.7(408)81x-31x-2.1=7.9(409)29x-14x-2.3=32.2(410)50x-16x-2.3=24.9(411)54x-27x-2.2=22.1(412)31x-8x-4.4=48.5(413)42x-21x-2.9=7.6(414)64x-5x-3.4=79.2(415)4x+4×7=208(416)2x+45×4=296(417)18x+7×21=291(418)21x+3×24=261(419)4x+9×15=191(420)2x+5×22=306(421)12x+7×25=259(422)25x+17×3=101(423)16x+28×5=316(424)15x-2×51=63(425)15x-3×4=63(426)4x-11×4=108(427)2x-10×7=94(428)27x-5×19=67(429)5x-11×6=84(430)4x-3×33=13(431)27x-67×2=55(432)11x-3×2=170(433)4.1x+1.2×6=15.4(434)0.3x+0.2×23=11.2(435)0.5x+0.6×3=8.8(436)1.6x+0.4×27=14(437)2.6x+0.5×11=21.1(438)3.6x+0.3×49=32.7(439)3.5x+0.2×44=19.3(440)0.8x+0.9×20=35.6(441)2.1x+2.3×6=24.3(442)2x+22×0.8=24(443)48x+2×1.1=16.6(444)7x+2×2.4=16(445)3x+5×0.8=11.2(446)2x+20×0.5=12.2(447)2x+12×0.6=10.2(448)2x+31×0.6=20.6(449)21x+10×1.7=27.5(450)10x+5×0.7=22.5(451)1.8x-2.5×3=1.5(452)3.8x-2×4=3.4(453)1.8x-0.2×34=11.2(454)1.5x-2×2=6.5(455)2.9x-0.3×9=3.1(456)2.3x-1.3×6=3.7(457)0.8x-2.8×5=5.2(458)0.6x-0.9×8=10.2(459)0.9x-0.2×6=16.8(460)3x-3×2.1=2.7(461)4x-20×0.4=7.6(462)46x-4×1.2=13.6(463)9x-2×1.7=5.6(464)11x-15×0.5=12.3(465)4x-14×0.3=5.4(466)4x-37×0.4=2.8(467)5x-4×0.8=6.3(468)21x-26×0.4=6.4(469)2(11x+28)=122(470)3(3x+22)=192(471)3(10x+40)=180(472)3(x+23)=108(473)2(6x+31)=182(474)2(x+28)=148(475)5(x+5)=195(476)2(20x+2)=84(477)2(5x+15)=170(478)13(x-7)=195(479)8(3x-23)=200(480)2(11x-48)=168(481)3(6x-10)=186(482)5(4x-16)=140(483)9(3x-29)=171(484)11(14x-42)=154(485)6(3x-17)=186(486)3(6x-48)=126(487)5(0.5x+0.3)=26.5(488)2(1.3x+5.8)=29.8(489)3(0.2x+6.6)=47.4(490)2(2.5x+9.3)=28.6(491)7(0.3x+0.3)=21(492)5(0.9x+3.2)=38.5(493)4(0.3x+7.5)=49.2(494)5(0.5x+2.3)=49(495)2(0.5x+1.1)=17.2(496)18(0.3x-7.7)=34.2(497)5(0.4x-2.2)=17(498)3(2.9x-4.4)=30.3(499)2(2.7x-2.6)=38(500)2(0.8x-1.1)=5.8(501)2(5x-9.9)=40.2(502)2(0.7x-1.6)=37.4(503)4(4.9x-6.2)=14.4(504)8(1.3x-9.2)=9.6(505)(12x+28)÷8=17(506)(9x+3)÷15=5(507)(x+41)÷7=7(508)(4x+15)÷3=21(509)(3x+42)÷9=9(510)(6x+28)÷2=98(511)(x+43)÷34=2(512)(6x+44)÷4=20(513)(9x+35)÷14=7(514)(10x-28)÷8=29(515)(9x-14)÷2=29(516)(13x-30)÷5=46(517)(18x-30)÷6=7(518)(12x-20)÷14=14(519)(13x-27)÷8=8(520)(13x-44)÷7=16(521)(4x-42)÷2=13(522)(4x-34)÷22=3(523)(8x+3.2)÷16=4.7(524)(3.7x+5.4)÷6=4.6(525)(3.3x+1)÷4=8.5(526)(4.2x+9.6)÷8=3.3(527)(7.1x+6.1)÷8=5.2(528)(4.3x+0.3)÷15=2.6(529)(4.5x+0.2)÷7=11.6(530)(2.2x+5.8)÷6=2.8(531)(2.8x+2.3)÷3=15.7(532)(7.9x-3.6)÷26=2.9(533)(0.7x-1)÷2=5.1(534)(2.7x-2.8)÷17=1.9(535)(7.1x-1.3)÷2=31.3(536)(2.4x-9.2)÷20=0.5(537)(8.8x-2.8)÷2=11.8(538)(8.1x-4.1)÷19=4.9(539)(0.6x-1.8)÷2=2.1(540)(4.9x-3.4)÷3=25参考答案(1)x=28(2)x=30(3)x=29(4)x=43(5)x=63(6)x=66(7)x=94(8)x=89(9)x=65(10)x=48(11)x=97(12)x=98(13)x=57(14)x=96(15)x=51(16)x=60(17)x=74(18)x=71(19)x=7.3(20)x=7.1(21)x=8.1(22)x=6(23)x=6.8(24)x=7.3(25)x=8.8(26)x=1.2(27)x=7.2(28)x=9.8(29)x=9.3(30)x=8.4(31)x=9.5(32)x=6.7(33)x=2.9(34)x=7.2(35)x=5.4(36)x=6.2(37)x=60(38)x=33(39)x=50(40)x=57(41)x=97(42)x=18(43)x=66(44)x=12(45)x=94(46)x=19(47)x=75(48)x=52(49)x=37(50)x=24(51)x=25(52)x=74(53)x=6(54)x=78(55)x=9.1(56)x=1.2(57)x=9.8(58)x=4.8(59)x=8.3(60)x=3.6(61)x=9.3(62)x=8.5(63)x=4.7(64)x=0.9(65)x=2.1(66)x=2.2(67)x=0.7(68)x=1.8(69)x=0.7(70)x=3(71)x=4.8(72)x=2.9(73)x=17(74)x=23(75)x=4(76)x=6(77)x=49(78)x=5(79)x=19(80)x=10(81)x=6(82)x=3(83)x=9(84)x=3(85)x=35(86)x=3(87)x=12(88)x=12(89)x=9(90)x=20(91)x=1.8(92)x=1.1(93)x=1.3(94)x=2(95)x=0.3(96)x=0.4(97)x=1.6(98)x=1.8(99)x=2.7(100)x=46(101)x=11(102)x=47(103)x=4(104)x=66(105)x=28(106)x=3(107)x=89(108)x=34(109)x=5(110)x=77(111)x=34(112)x=30(113)x=4(114)x=18(115)x=72(116)x=3(117)x=18(118)x=96(119)x=114(120)x=198(121)x=52(122)x=176(123)x=128(124)x=144(125)x=126(126)x=72(127)x=9(128)x=9(129)x=12(130)x=12(131)x=9.6(132)x=16.8(133)x=4.8(134)x=19(135)x=5.1(136)x=5(137)x=4(138)x=54(139)x=6(140)x=6(141)x=5(142)x=4(143)x=16(144)x=20(145)x=15(146)x=3(147)x=9(148)x=17(149)x=13(150)x=10(151)x=4(152)x=2(153)x=2(154)x=0.3(155)x=0.2(156)x=0.9(157)x=1.9(158)x=0.9(159)x=0.4(160)x=0.6(161)x=4.7(162)x=0.5(163)x=10(164)x=43(165)x=60(166)x=40(167)x=5(168)x=9(169)x=33(170)x=4(171)x=39(172)x=8(173)x=0.5(174)x=0.2(175)x=0.2(176)x=2.3(177)x=0.5(178)x=0.2(179)x=0.2(180)x=1.6(181)x=21(182)x=3(183)x=89(184)x=16(185)x=24(186)x=4(187)x=22(188)x=37(189)x=28(190)x=3(191)x=4(192)x=2(193)x=16(194)x=29(195)x=17(196)x=55(197)x=8(198)x=12(199)x=14(200)x=4(201)x=9(202)x=46(203)x=13(204)x=23(205)x=17(206)x=6(207)x=6(208)x=18(209)x=11(210)x=14(211)x=7(212)x=13(213)x=20(214)x=11(215)x=23(216)x=5(217)x=6.1(218)x=9.1(219)x=0.4(220)x=0.2(221)x=2.7(222)x=4.6(223)x=0.6(224)x=0.6(225)x=0.3(226)x=6(227)x=68(228)x=2(229)x=3(230)x=2(231)x=29(232)x=9(233)x=2(234)x=3(235)x=1.3(236)x=0.2(237)x=4.1(238)x=0.4(239)x=2.2(240)x=0.8(241)x=0.4(242)x=0.2(243)x=0.4(244)x=15(245)x=2(246)x=4(247)x=45(248)x=9(249)x=7(250)x=5(251)x=2(252)x=3(253)x=9(254)x=35(255)x=6(256)x=78(257)x=21(258)x=9(259)x=11(260)x=28(261)x=13(262)x=0.5(263)x=0.4(264)x=2(265)x=0.2(266)x=1.8(267)x=2.2(268)x=3.6(269)x=3(270)x=1.1(271)x=18(272)x=10(273)x=12(274)x=2(275)x=2(276)x=13(277)x=5(278)x=10(279)x=9(280)x=3(281)x=7(282)x=2(283)x=13(284)x=6(285)x=13(286)x=8(287)x=46(288)x=5(289)x=3(290)x=36(291)x=11(292)x=41(293)x=7(294)x=10(295)x=24(296)x=10(297)x=10(298)x=9(299)x=18(300)x=30(301)x=9(302)x=35(303)x=10(304)x=10(305)x=9(306)x=10(307)x=8(308)x=8(309)x=14(310)x=21(311)x=14(312)x=16(313)x=46(314)x=20(315)x=20(316)x=52(317)x=14(318)x=21(319)x=37(320)x=4(321)x=22(322)x=10(323)x=2(324)x=21(325)x=11(326)x=13(327)x=13(328)x=6(329)x=16(330)x=4(331)x=7(332)x=3(333)x=12(334)x=9(335)x=19(336)x=18(337)x=20(338)x=9(339)x=7(340)x=5(341)x=11(342)x=11(343)x=17(344)x=18(345)x=3(346)x=14(347)x=11(348)x=9(349)x=13(350)x=10(351)x=4(352)x=0.8(353)x=8.8(354)x=0.2(355)x=0.4(356)x=1.5(357)x=0.3(358)x=1(359)x=0.3(360)x=1.6(361)x=19(362)x=30(363)x=8(364)x=10(365)x=11(366)x=14(367)x=70(368)x=3(369)x=9(370)x=5.2(371)x=0.2(372)x=1.9(373)x=0.3(374)x=0.4(375)x=1.1(376)x=0.7(377)x=1.2(378)x=1.7(379)x=28(380)x=36(381)x=20(382)x=3(383)x=15(384)x=8(385)x=58(386)x=4(387)x=6(388)x=2.7(389)x=3(390)x=0.9(391)x=1(39