五年級數(shù)學(方程)專項練習題及答案

五年級數(shù)學(方程)專項練習題及答案(1)x+21=112(2)x+51=120(3)x+42=140(4)x+51=112(5)x+13=90(6)x+75=139(7)x+29=105(8)x+25=74(9)x+32=43(10)x-48=46(11)x-32=31(12)x-43=13(13)x-17=22(14)x-46=34(15)x-70=21(16)x-48=31(17)x-8=28(18)x-2=95(19)x+6.5=7.2(20)x+7.7=9.4(21)x+4.7=13(22)x+9.8=15.1(23)x+3.7=13.6(24)x+7.4=8.1(25)x+9.5=18.1(26)x+5.5=15.3(27)x+7.1=8.4(28)x-7.2=2.2(29)x-7.3=2.4(30)x-3.2=6.7(31)x-5.3=3.2(32)x-1.5=2(33)x-1.2=2.4(34)x-3.9=1.1(35)x-1.9=3.6(36)x-2.2=5.7(37)50+x=54(38)60+x=128(39)70+x=132(40)50+x=108(41)64+x=88(42)2+x=24(43)79+x=88(44)11+x=47(45)22+x=47(46)69-x=18(47)89-x=49(48)69-x=21(49)62-x=37(50)73-x=48(51)88-x=23(52)96-x=62(53)87-x=40(54)32-x=27(55)2.4+x=11.4(56)8.3+x=15(57)0.9+x=2.3(58)3.1+x=8.9(59)7.2+x=10.9(60)4.8+x=8.2(61)1.5+x=5.9(62)7.9+x=17.6(63)3.5+x=4.1(64)3.8-x=1(65)9.2-x=1.5(66)6.3-x=2(67)5.9-x=2.3(68)9.5-x=1.1(69)9.7-x=4.5(70)8.9-x=7.4(71)4.8-x=1(72)5.3-x=2(73)34x=136(74)7x=56(75)16x=128(76)20x=180(77)7x=91(78)15x=105(79)12x=156(80)32x=64(81)49x=196(82)0.6x=4.2(83)5.4x=16.2(84)0.5x=17(85)0.2x=12.8(86)1.7x=15.3(87)4.5x=9(88)0.4x=18(89)2.8x=11.2(90)0.2x=15.6(91)79x=15.8(92)15x=13.5(93)90x=18(94)3x=10.5(95)47x=9.4(96)30x=18(97)24x=4.8(98)14x=5.6(99)20x=16(100)195÷x=3(101)21÷x=7(102)144÷x=6(103)164÷x=4(104)140÷x=14(105)80÷x=16(106)108÷x=27(107)128÷x=8(108)42÷x=3(109)17÷x=1(110)19.2÷x=3.2(111)2.8÷x=0.4(112)1.8÷x=0.9(113)11÷x=0.2(114)11.1÷x=0.3(115)9.5÷x=0.5(116)18.9÷x=0.9(117)7.8÷x=0.2(118)x÷14=13(119)x÷8=11(120)x÷5=2(121)x÷12=2(122)x÷17=8(123)x÷6=25(124)x÷2=16(125)x÷59=3(126)x÷39=5(127)x÷7=2.6(128)x÷9=0.4(129)x÷11=1.3(130)x÷17=0.9(131)x÷3=2.5(132)x÷82=0.2(133)x÷55=0.2(134)x÷4=4.1(135)x÷5=2.9(136)6x+12=120(137)3x+50=176(138)3x+23=161(139)10x+51=221(140)16x+48=112(141)4x+38=134(142)6x+27=153(143)9x+21=156(144)2x+33=117(145)23x-35=34(146)3x-39=108(147)8x-14=82(148)2x-51=99(149)2x-18=180(150)6x-48=102(151)24x-39=81(152)21x-30=75(153)33x-32=100(154)4x+1.9=10.7(155)10x+3.8=20.8(156)4x+2.5=10.5(157)52x+1.7=12.1(158)6x+1.8=11.4(159)12x+1.2=8.4(160)33x+1.8=11.7(161)2x+1.8=18.6(162)32x+5.3=24.5(163)0.5x+2.2=9.2(164)1.3x+2.1=21.6(165)5.5x+3.7=14.7(166)2.7x+5.9=24.8(167)1.5x+1.4=20.9(168)0.7x+2.5=20.7(169)0.6x+2=3.2(170)2x+2.8=10.8(171)1.7x+1=9.5(172)2x-2.3=11.5(173)2x-2.9=6.3(174)15x-3.4=5.6(175)2x-1=1.4(176)17x-3.3=1.8(177)92x-3.7=14.7(178)8x-2.1=15.5(179)2x-2.3=11.1(180)3x-3.6=6(181)0.2x-2.8=3.2(182)0.3x-2.1=3.6(183)0.3x-4.8=1.8(184)0.2x-3.2=12(185)1.4x-4.4=6.8(186)0.4x-1.1=16.1(187)0.2x-5.1=12.3(188)0.7x-4.8=10.6(189)1.1x-1.6=11.6(190)92+2x=226(191)88+41x=170(192)73+8x=185(193)137+3x=248(194)19+48x=115(195)84+3x=99(196)143+10x=323(197)34+5x=104(198)151+3x=337(199)184-2x=164(200)110-2x=34(201)129-3x=75(202)147-3x=69(203)94-2x=60(204)139-17x=37(205)197-22x=87(206)98-2x=52(207)100-18x=28(208)13.2+0.8x=18(209)6.6+0.3x=11.1(210)6.3+3.7x=13.7(211)13.1+0.5x=19.6(212)12.7+8x=28.7(213)13.9+1.9x=17.7(214)11+3.4x=21.2(215)2.9+1.7x=9.7(216)7.9+0.2x=19.9(217)14+9x=33.8(218)16.6+7x=20.8(219)1.1+2x=11.7(220)12.3+11x=32.1(221)7.2+6x=26.4(222)13.2+55x=29.7(223)7.7+11x=19.8(224)4+7x=19.4(225)11.3+16x=30.5(226)16-1.4x=6.2(227)3.2-1.1x=1(228)7.1-1x=5.1(229)13.6-0.9x=11.8(230)17.5-1.6x=7.9(231)14.2-0.5x=7.2(232)19.3-0.2x=3.3(233)19.8-1.4x=1.6(234)10.6-0.2x=1.6(235)6.7-3x=1(236)9.4-8x=5.4(237)14.9-14x=3.7(238)18.2-10x=1.2(239)9.3-11x=3.8(240)7.7-32x=1.3(241)11.7-2x=7.7(242)10.6-6x=4(243)13.1-4x=11.9(244)7x÷28=6(245)94x÷4=47(246)9x÷4=27(247)30x÷25=6(248)2x÷33=6(249)6x÷12=8(250)3x÷21=7(251)13x÷7=26(252)20x÷10=18(253)4.5x÷90=0.2(254)0.6x÷15=1.2(255)3.2x÷6=1.6(256)3x÷60=0.2(257)0.6x÷30=0.3(258)0.6x÷10=1.2(259)0.4x÷24=0.6(260)0.6x÷28=0.3(261)0.5x÷3=4.5(262)45x÷6=3(263)2x÷14=1.1(264)17x÷34=0.4(265)6x÷3=4.4(266)2x÷4=4.5(267)8x÷84=0.2(268)4x÷16=0.6(269)12x÷6=0.8(270)36x÷60=0.3(271)8x+3x=242(272)11x+19x=210(273)12x+3x=90(274)2x+6x=208(275)7x+15x=242(276)4x+3x=98(277)11x+6x=289(278)13x+2x=180(279)17x+16x=297(280)19x-12x=49(281)15x-11x=48(282)16x-12x=24(283)9x-6x=66(284)15x-7x=96(285)19x-8x=99(286)12x-7x=40(287)10x-7x=36(288)11x-3x=96(289)7.7x+6.4x=42.3(290)5.6x+0.7x=56.7(291)0.9x+5.1x=78(292)0.3x+1.5x=64.8(293)7.6x+9.1x=33.4(294)0.2x+1.4x=30.4(295)0.6x+1.5x=126(296)8.6x+3.9x=37.5(297)0.6x+6.6x=86.4(298)5x-1.2x=64.6(299)1.2x-0.7x=16(300)3.5x-2.4x=16.5(301)7x-3.4x=43.2(302)0.9x-0.6x=20.7(303)1.4x-0.5x=18.9(304)6.7x-1x=34.2(305)8.1x-6.9x=8.4(306)4.4x-2x=31.2(307)6x+2x+31=279(308)12x+13x+43=243(309)15x+9x+41=329(310)7x+2x+20=236(311)2x+17x+25=158(312)16x+14x+37=247(313)9x+12x+30=198(314)6x+5x+24=211(315)15x+5x+43=123(316)11x+13x-24=144(317)12x+16x-23=229(318)16x+13x-48=39(319)9x+19x-38=46(320)12x+6x-23=157(321)16x+9x-6=194(322)4x+13x-33=103(323)4x+13x-35=220(324)18x+5x-11=127(325)17x-11x+47=59(326)12x-7x+35=100(327)12x-10x+4=30(328)19x-13x+7=67(329)9x-6x+44=83(330)10x-5x+38=138(331)15x-2x+37=193(332)16x-5x+27=60(333)14x-4x+13=113(334)16x-5x-19=14(335)16x-6x-7=83(336)8x-6x-11=23(337)4x-2x-9=67(338)19x-7x-14=106(339)17x-11x-22=14(340)9x-5x-23=33(341)18x-10x-22=26(342)11x-4x-29=90(343)0.3x+6.1x+1.1=39.5(344)1x+2x+2.4=98.4(345)1.4x+3x+0.4=92.8(346)8.5x+4.7x+1.5=41.1(347)1.2x+4.8x+4.8=46.8(348)2.8x+3.7x+2.7=113.2(349)8.7x+1.6x+0.7=83.1(350)1.7x+2x+3.1=40.1(351)0.8x+2.2x+0.8=87.8(352)30x+45x+3.9=71.4(353)68x+38x+3.6=67.2(354)72x+81x+4.5=81(355)13x+18x+0.2=90.1(356)87x+85x+0.2=155(357)43x+67x+4=59(358)11x+24x+3.8=14.3(359)73x+87x+4.9=52.9(360)97x+87x+3.7=40.5(361)4.3x+7.1x-3.1=65.3(362)5.8x+6.9x-2.9=124.1(363)4.9x+9.5x-2.8=83.6(364)4.4x+1x-1=9.8(365)1.1x+1.5x-4.4=112.6(366)4x+3x-2.8=39.2(367)1.8x+1.2x-3.3=38.7(368)0.2x+7.9x-0.6=80.4(369)6x+6.6x-0.5=163.3(370)39x+96x-4.8=22.2(371)10x+49x-2.8=115.2(372)7x+47x-1.5=95.7(373)10x+2x-3.7=94.7(374)46x+85x-1=103.8(375)72x+16x-0.6=43.4(376)3x+10x-4.3=91.9(377)3x+15x-2.9=58.3(378)55x+60x-1.5=125(379)8.7x-3.2x+3.4=19.9(380)4x-2.2x+0.5=20.3(381)8.8x-6x+4.2=18.2(382)5x-1.8x+0.2=19.4(383)9.9x-7.7x+2.6=7(384)8.4x-5.6x+4.5=29.7(385)3.1x-0.8x+0.5=32.7(386)7.6x-5.2x+3.5=13.1(387)0.5x-0.3x+4.2=21.6(388)97x-14x+4.4=62.5(389)23x-6x+4.9=76.3(390)32x-19x+1.7=5.6(391)10x-4x+3.2=27.2(392)82x-36x+3.1=16.9(393)69x-14x+1.9=29.4(394)45x-42x+3.8=7.7(395)69x-38x+1.6=32.6(396)79x-61x+4.3=9.7(397)6.7x-0.4x-1.1=43(398)3.2x-1x-4.8=48(399)3.7x-1.3x-2.6=23.8(400)7.4x-0.3x-1.5=69.5(401)6.3x-2.1x-0.3=54.3(402)9x-6.9x-1.7=21.4(403)8.6x-1.8x-1.8=18.6(404)9.2x-6x-2.2=20.2(405)5.9x-3x-3.6=25.4(406)53x-46x-2.6=7.9(407)61x-5x-1=21.4(408)38x-18x-0.8=15.2(409)26x-8x-2.9=63.7(410)33x-9x-3.7=8.3(411)49x-34x-1=11(412)37x-5x-3=77(413)19x-4x-2.9=43.6(414)50x-23x-3.1=23.9(415)6x+11×5=157(416)5x+4×44=351(417)3x+5×21=123(418)2x+2×43=166(419)2x+34×2=154(420)6x+57×3=279(421)21x+2×18=120(422)15x+2×77=274(423)4x+33×2=138(424)4x-6×17=70(425)20x-64×2=12(426)4x-23×3=99(427)8x-4×6=144(428)27x-22×4=74(429)18x-3×6=180(430)3x-7×6=21(431)21x-6×15=57(432)6x-20×2=146(433)4.6x+3.1×5=24.7(434)0.5x+0.3×29=14.7(435)1.9x+0.4×38=34.2(436)1x+2.6×2=20.2(437)2x+2.8×6=22.8(438)0.3x+0.3×4=13.5(439)0.3x+0.4×41=21.8(440)2.9x+1.5×11=22.3(441)4.6x+0.3×42=26.4(442)4x+10×0.6=24(443)2x+29×0.3=14.5(444)41x+3×4.8=22.6(445)12x+4×1.6=12.4(446)35x+43×0.4=31.2(447)18x+10×1.3=16.6(448)11x+15×0.3=21(449)14x+5×3=31.8(450)9x+23×0.3=22.2(451)0.6x-0.3×16=13.8(452)4.3x-3.5×3=2.4(453)2.6x-0.3×2=7.2(454)0.4x-0.9×4=8.8(455)3.6x-0.5×11=8.9(456)0.4x-0.7×23=1.1(457)0.5x-0.3×5=4.5(458)2.6x-1.6×3=8.2(459)1.7x-2.3×5=7.2(460)10x-6×1.3=1.2(461)8x-5×2.5=3.5(462)14x-5×0.6=2.6(463)6x-4×4.2=1.2(464)14x-27×0.4=1.8(465)17x-22×0.3=5.3(466)14x-4×0.5=12(467)11x-43×0.2=9(468)15x-5×2.3=6.5(469)2(14x+42)=140(470)3(10x+6)=198(471)3(x+2)=33(472)3(x+2)=132(473)2(2x+5)=54(474)4(16x+6)=152(475)2(13x+12)=76(476)2(3x+32)=172(477)3(x+45)=180(478)5(x-15)=50(479)19(3x-11)=190(480)2(9x-19)=142(481)2(x-25)=24(482)2(3x-26)=92(483)2(2x-34)=44(484)5(2x-44)=150(485)10(2x-34)=200(486)3(x-20)=45(487)2(0.4x+9.3)=43.4(488)9(0.2x+1.2)=27(489)2(0.3x+5.6)=19(490)3(0.3x+5.5)=39(491)4(0.5x+1.4)=47.6(492)2(0.7x+0.3)=11.8(493)2(4.1x+2.7)=30(494)3(3x+1.7)=23.1(495)4(1.7x+5.7)=36.4(496)2(0.8x-4.4)=47.2(497)4(2x-0.4)=46.4(498)24(0.8x-3.8)=24(499)5(1.3x-6.8)=31(500)3(2.5x-0.5)=21(501)5(5.3x-7.7)=14.5(502)11(0.2x-0.8)=39.6(503)2(3.6x-2.8)=23.2(504)16(2.2x-7.4)=22.4(505)(7x+8)÷27=6(506)(2x+24)÷14=4(507)(12x+44)÷4=41(508)(3x+32)÷4=23(509)(9x+30)÷3=70(510)(6x+48)÷18=6(511)(9x+2)÷5=22(512)(8x+28)÷3=60(513)(2x+28)÷43=2(514)(14x-30)÷40=1(515)(9x-13)÷2=43(516)(15x-18)÷2=21(517)(12x-12)÷4=39(518)(3x-17)÷10=7(519)(9x-4)÷2=88(520)(12x-28)÷22=8(521)(12x-22)÷2=91(522)(10x-25)÷3=45(523)(3.5x+5.5)÷22=2(524)(3.3x+4.5)÷8=5.1(525)(7.1x+8)÷4=23.3(526)(3.2x+6.9)÷19=0.7(527)(0.4x+8)÷2=5.8(528)(5.8x+8.9)÷9=5.5(529)(3.2x+1.6)÷4=12.4(530)(4x+9.4)÷34=1.1(531)(4.6x+4.1)÷7=6.5(532)(1.4x-6.1)÷5=1.3(533)(6.5x-1.5)÷5=12.7(534)(3x-4.6)÷4=4.1(535)(4.1x-5.2)÷8=1.4(536)(7.1x-8.5)÷3=1.9(537)(3.5x-6.6)÷13=0.3(538)(1.7x-2.9)÷5=3.5(539)(8.5x-8)÷6=10(540)(3x-5.6)÷2=25.7參考答案(1)x=91(2)x=69(3)x=98(4)x=61(5)x=77(6)x=64(7)x=76(8)x=49(9)x=11(10)x=94(11)x=63(12)x=56(13)x=39(14)x=80(15)x=91(16)x=79(17)x=36(18)x=97(19)x=0.7(20)x=1.7(21)x=8.3(22)x=5.3(23)x=9.9(24)x=0.7(25)x=8.6(26)x=9.8(27)x=1.3(28)x=9.4(29)x=9.7(30)x=9.9(31)x=8.5(32)x=3.5(33)x=3.6(34)x=5(35)x=5.5(36)x=7.9(37)x=4(38)x=68(39)x=62(40)x=58(41)x=24(42)x=22(43)x=9(44)x=36(45)x=25(46)x=51(47)x=40(48)x=48(49)x=25(50)x=25(51)x=65(52)x=34(53)x=47(54)x=5(55)x=9(56)x=6.7(57)x=1.4(58)x=5.8(59)x=3.7(60)x=3.4(61)x=4.4(62)x=9.7(63)x=0.6(64)x=2.8(65)x=7.7(66)x=4.3(67)x=3.6(68)x=8.4(69)x=5.2(70)x=1.5(71)x=3.8(72)x=3.3(73)x=4(74)x=8(75)x=8(76)x=9(77)x=13(78)x=7(79)x=13(80)x=2(81)x=4(82)x=7(83)x=3(84)x=34(85)x=64(86)x=9(87)x=2(88)x=45(89)x=4(90)x=78(91)x=0.2(92)x=0.9(93)x=0.2(94)x=3.5(95)x=0.2(96)x=0.6(97)x=0.2(98)x=0.4(99)x=0.8(100)x=65(101)x=3(102)x=24(103)x=41(104)x=10(105)x=5(106)x=4(107)x=16(108)x=14(109)x=17(110)x=6(111)x=7(112)x=2(113)x=55(114)x=37(115)x=19(116)x=21(117)x=39(118)x=182(119)x=88(120)x=10(121)x=24(122)x=136(123)x=150(124)x=32(125)x=177(126)x=195(127)x=18.2(128)x=3.6(129)x=14.3(130)x=15.3(131)x=7.5(132)x=16.4(133)x=11(134)x=16.4(135)x=14.5(136)x=18(137)x=42(138)x=46(139)x=17(140)x=4(141)x=24(142)x=21(143)x=15(144)x=42(145)x=3(146)x=49(147)x=12(148)x=75(149)x=99(150)x=25(151)x=5(152)x=5(153)x=4(154)x=2.2(155)x=1.7(156)x=2(157)x=0.2(158)x=1.6(159)x=0.6(160)x=0.3(161)x=8.4(162)x=0.6(163)x=14(164)x=15(165)x=2(166)x=7(167)x=13(168)x=26(169)x=2(170)x=4(171)x=5(172)x=6.9(173)x=4.6(174)x=0.6(175)x=1.2(176)x=0.3(177)x=0.2(178)x=2.2(179)x=6.7(180)x=3.2(181)x=30(182)x=19(183)x=22(184)x=76(185)x=8(186)x=43(187)x=87(188)x=22(189)x=12(190)x=67(191)x=2(192)x=14(193)x=37(194)x=2(195)x=5(196)x=18(197)x=14(198)x=62(199)x=10(200)x=38(201)x=18(202)x=26(203)x=17(204)x=6(205)x=5(206)x=23(207)x=4(208)x=6(209)x=15(210)x=2(211)x=13(212)x=2(213)x=2(214)x=3(215)x=4(216)x=60(217)x=2.2(218)x=0.6(219)x=5.3(220)x=1.8(221)x=3.2(222)x=0.3(223)x=1.1(224)x=2.2(225)x=1.2(226)x=7(227)x=2(228)x=2(229)x=2(230)x=6(231)x=14(232)x=80(233)x=13(234)x=45(235)x=1.9(236)x=0.5(237)x=0.8(238)x=1.7(239)x=0.5(240)x=0.2(241)x=2(242)x=1.1(243)x=0.3(244)x=24(245)x=2(246)x=12(247)x=5(248)x=99(249)x=16(250)x=49(251)x=14(252)x=9(253)x=4(254)x=30(255)x=3(256)x=4(257)x=15(258)x=20(259)x=36(260)x=14(261)x=27(262)x=0.4(263)x=7.7(264)x=0.8(265)x=2.2(266)x=9(267)x=2.1(268)x=2.4(269)x=0.4(270)x=0.5(271)x=22(272)x=7(273)x=6(274)x=26(275)x=11(276)x=14(277)x=17(278)x=12(279)x=9(280)x=7(281)x=12(282)x=6(283)x=22(284)x=12(285)x=9(286)x=8(287)x=12(288)x=12(289)x=3(290)x=9(291)x=13(292)x=36(293)x=2(294)x=19(295)x=60(296)x=3(297)x=12(298)x=17(299)x=32(300)x=15(301)x=12(302)x=69(303)x=21(304)x=6(305)x=7(306)x=13(307)x=31(308)x=8(309)x=12(310)x=24(311)x=7(312)x=7(313)x=8(314)x=17(315)x=4(316)x=7(317)x=9(318)x=3(319)x=3(320)x=10(321)x=8(322)x=8(323)x=15(324)x=6(325)x=2(326)x=13(327)x=13(328)x=10(329)x=13(330)x=20(331)x=12(332)x=3(333)x=10(334)x=3(335)x=9(336)x=17(337)x=38(338)x=10(339)x=6(340)x=14(341)x=6(342)x=17(343)x=6(344)x=32(345)x=21(346)x=3(347)x=7(348)x=17(349)x=8(350)x=10(351)x=29(352)x=0.9(353)x=0.6(354)x=0.5(355)x=2.9(356)x=0.9(357)x=0.5(358)x=0.3(359)x=0.3(360)x=0.2(361)x=6(362)x=10(363)x=6(364)x=2(365)x=45(366)x=6(367)x=14(368)x=10(369)x=13(370)x=0.2(371)x=2(372)x=1.8(373)x=8.2(374)x=0.8(375)x=0.5(376)x=7.4(377)x=3.4(378)x=1.1(379)x=3(380)x=11(381)x=5(382)x=6(383)x=2(384)x=9(385)x=14(386)x=4(387)x=87(388)x=0.7(389)x=4.2(390)x=0.3(391)x=4(392)x=