小学五年级数学方程题目及答案

(115)8.4+x=13.2(116)20x=10(117)0.8x-1.2=10.8

(118)5.9-x=1.3(119)(3.4x+3.8)÷2=8.7(120)8x-5x+24=87

(121)2.8+0.2x=7.6(122)14.2÷x=0.2(123)14.4+91x=32.6

(124)14x+18x+1.5=148.7(125)9.6+8x=16(126)(15x+48)÷4=27

(127)2x-23=131(128)5.1-x=4.1(129)2x-25=31

(130)5x+6x-38=204(131)9.3+2.6x=17.1(132)(12x-8)÷8=2

(133)2x+64×2=238(134)40x-5.9=2.1(135)11(0.2x-5.7)=40.7

(136)2x÷6=0.6(137)0.3x÷22=0.6(138)7x+6x=338

(139)x÷5=15(140)6.6x+5.1x-3.1=113.9(141)20x+8x+0.4=95.6

(142)0.8x=16(143)3(0.5x+1.9)=8.7(144)44-8x=28

(145)13x-55=101(146)7x+9×16=319(147)x+94=159

(148)3+x=56(149)x-5=4(150)10.3-1.8x=3.1

(151)23+32x=215(152)x+7.8=15.1(153)18x-2x-23=73

(154)6x+5x-20=156(155)2(7x+26)=150(156)14x+15x+23=313

(157)2.3x+2.7×6=20.8(158)94÷x=2(159)(4.2x-4.8)÷2=8.1

(160)6(3x-19)=84(161)2(x-4)=30(162)3.2x+4.9x-1.9=127.7

(163)(6.3x-0.2)÷8=11(164)(4.9x+4)÷9=4.8(165)x+16=28

(166)48x-8x+3.8=27.8(167)4x-2×3.4=12.8(168)x÷2=3.6

(169)6.2x-2.3x=62.4(170)19x+16×0.4=21.6(171)x-24=55

(172)0.9x-0.2×48=1.2(173)12x÷3=0.8(174)2x+10×1.4=16

(175)5x-3x+8=84(176)x-1.3=4.5(177)(3.5x+5.6)÷23=0.7

(178)61-x=48(179)24x÷8=0.6(180)3x=2.4

参考答案：

(1)x=41(2)x=3(3)x=6

(4)x=15(5)x=2.6(6)x=5.3

(7)x=7(8)x=0.4(9)x=12

(10)x=34(11)x=16(12)x=5

(13)x=0.4(14)x=11(15)x=3

(16)x=0.7(17)x=8.1(18)x=2

(19)x=6(20)x=9(21)x=18

(22)x=3(23)x=2.3(24)x=2

(25)x=3(26)x=3(27)x=5

(28)x=9(29)x=2(30)x=58

(31)x=9(32)x=35(33)x=0.6

(34)x=1(35)x=22(36)x=2

(37)x=11(38)x=7(39)x=0.5

(40)x=19.8(41)x=40(42)x=8

(43)x=0.4(44)x=26(45)x=5

(46)x=28(47)x=12(48)x=0.5

(49)x=22(50)x=2(51)x=7.3