五年级解方程练习题180题(有答案过程)ok.docx

五年级解方程180题有答案(1)(0.5+x)+x=9.8÷2(12)X+8.3=10.7(2)2(X+X+0.5)=9.8(13)15x=3(3)25000+x=6x(14)3x8=16(4)3200=440+5X+X(15)3x+9=27(5)X-0.8X=6(16)18(-2)=270(6)12-8x=4.8(17)12x=300-4x(7)7.5+2X=15(18)7x+5.3=7.4(8)1.2x=81.6(19)3x÷5=4.8(7)x+5.6=9.4(25)0.5x+8=43(10)-0.7x=3.6(26)6-3x=18(ll)91÷x=1.3(27)7(6.5+x)=87.5(28) O.273÷x=0.35(40)20-9x=2(29) 1.8x=0.972(41)x+19.8=25.8(30) x÷0.756=90(42)5.6x=33.6(31) O.l(x+6)=3.3×0.4(43) 9.8-=3.8(32)(27.5-35)÷x=4(44) 75.6÷x=12.6(33)9-40=5(45) 5x+12.5=32.3(34) x÷5+9=21(46)5(x+8)=102(35) 48-27+5x=31(47)x+3x+10=70(36) 10.5+x+21=56(48)3(x+3)=50-+3(37) x+2x+18=78(49)5x+15=60(38) (200-)÷5=30(50)3.5-5x=2(39) (-140)÷70=4(51)(52)(53)(54)(55)(56)(57)(58)(59)(60)(61)(62)0.3×7+4x=12.5(63)6x+18=48x÷l.5-1.25=0.75(64)3(x+2.1)=10.54-1.3×6=2.6(65)12-9x=8.76x+12.8=15.8(66)13(x+5)=169150×2+3x=690(67)2-97=34.22-20=4(68)3.4-48=26.83x+6=18(69)42x+25x=1342(2.8+x)=10.4(70)1.5(x+1.6)=3.6(-3)÷2=7.5(71)2(-3)=5.813.2x+9x=33.3(72)65x+7=1373x=x+100(73)9x+4×2.5=91x+4.8=7.2(74)4.2x+2.5x=134(75) 10.5x+6.5x=51(76) 89-43x=9.2(77)5-45=100(87)0.5×16-16×0.2=4x(88)(89)139.25-X=O.40318.9÷X=0.3(78)1.2-0.5x=6.3(90)23x=14x+27(79)23.4=2x(91)x+14x=75(80)4-=48.6(92)95-5x=80(81)4.5-=28(93：)1.8+6x=54(82)X-5.7=2.15(94)6.7-60.3=6.7(83)5X-2X=18(95)9+4x=53(84)3X+0.7=7(96)2x+8=16(85)3.5×2=4.2+x(97)20-14x=24(86)26×1.5=2x+10(98)x+7x=8(99)9-3x=6(lll)3x+7=28(100)6-8=4(112)3-7=26(101)5x+x=9(113)9-=16(102)8-8=6x(114)24x+x=50(103)4x=20(115)1.2-8=4(104)2-6=12(116)3-8=31(105)7x+7=14(117)6x+6=12(106)6-6=0(118)3-3=3(107)5x+6=ll(119)5-3x=4(108)2-8=10(120)2x+16=19(109)2.5-8=43(121)5x+8=19(110)x=74(122)14-6x=8(123)15+6x=27(135)7-9=20(124)5-8x=4(136)-56=l(125)7x+8=15(137)8-7x=l(126)9-2x=l(138)-30=12(127)4+5x=9(139)6-21=21(128)10-=8(140)6-3=6(129)8x+9=17(141)9x=18(130)9+6x=15(142)4-18=14(131)x+9x=4+7(143)5x+9=ll(132)2x+9=17(144)17-2x=ll(133)8-4x=6(145)x+4+8=23(134)6-7=28(146)7-12=9(158)9÷4x=40(147)X-5.7=2.15(159)O.2-0.4+0.5=3.7(148)5X-2X=18(160)9.4-O.4x=16.2(149)3X+0.5=5(161)92-4x=20(150)3.5×2=4x(162)7x÷6=1.4(151)2×1.5=2x(163)16x+34x=l(152)0.5×16-16×0.l=4x(164)18-14x=12(153)9.26-X=0.402(154)36.9÷X=0.3(165)3-42÷14=15(155)X÷0.5=2.6(166)12+4x=56(156)93-5x=80(157)180-6x=54(167)22-14x=12(168) X+8. 3=10. 7(177)12x+8x=4.8(169)5x=30(178)7(-2)=49(170)-5.6=9.4(179)4×8+2x=36(171)x÷0.8=90(180)(-2)÷3=7(172)3-8=16(181)x÷5+9=21(173)3x+9=27(182)(300-)÷5=30(174)5.3+7x=7.4(183)91÷x=1.3(175)3x÷5=4.8(184)41-3x=17(176)X-0.8X=6X=3.8 (10)-0. 7x=3.60. 3x=3. 6 0. 3x÷0. 3=3.6÷0. 3X=12(ll)91÷x=1.391÷x×x=1.3×x1.3x=911.3x÷l. 3=91 ÷ 1.3 X=70(12) X+8.3=10. 7X+8. 3-8.3=10. 7-8.3X=2.4 (13)15x=315x÷15=3÷15X=O. 2(14) 3-8=16 3-8+8=16+8 3x=24 3x÷3=24÷3X=8(15) 3x+9=27 3x+9-9=27-93x=183x÷3=18÷33x=6 (16) 18(-2)=27018-36=270 18-36+36=270+36 18x=306 18x÷18=306÷18X=17(17) 12x=300-4x12x+4x=300-4x+4x16x=30016x÷16=300÷16X=18. 75(18) 7x+5. 3=7.4 7x+5.3-5.3=7.4-5.37x=2.1五年级解方程180题答案(1) (0.5+x)+x=9.8÷20.5+2x=4.90.5+2-0.5=4.9-0.52x=4.42x÷2=4.4÷2X=2.2(2) 2(X+X+0.5)=9.82x+2x+l=9.84x+l-l=9.8-14x=8.84x÷4=8.8÷4X=2.2(3) 25000+x=6x25000+-=6-5x=250005x÷5=25000÷5X=5000(4) 3200=440+5X+X6x+440=32006x+450-450=3200-4406x=276O6x÷6=2760÷6X=460(5) X-0.8X=60.2x=60.2x÷0.2=6÷0.2X=30(6) 12-8x=4.84x=4.84x÷4=48÷4X=I.2(7) 7.5+2X=152x+7.5-7.5=15-7.52x=7.52x÷2=7.5÷2X=3.75(8) 1.2x=81.61.2x÷1.2=81.6÷1.2X=68(9) x÷5.6=9.4X+5.6-5.6=9.4-5.67x÷7=2.1÷7X=O.3(19) 3x÷5=483x÷5×5=48×53x=243x÷3=24÷3X=8(20) 30÷x+25=8530÷x+25-25=85-2530÷x=6030÷x×x=60×x30=60x60x÷60=30÷60X=O.5(21) 1.4×8-2x=621.2- 2x+2x=6+2x11. 2=6+2x2x+6-6=ll.2-62x=5.22x÷2=5.2÷2X=2.6(22) 6-12.8×3=O.066-38.4=0.066x=38.466x÷6=38.46÷6X=6.41(23) 410-3x=170410-3+3x=170+3x17Q+3x=4103x+170-170=410-1703x=2403x÷3=240÷3X=80(24) 3(x+0.5)=213x+l.5=213x+l.5-1.5=21-1.53x=19.53x÷3=19.5÷3X=65(25) 0.5x+8=43O.5x+8-8=43-80.5x=35O.5x÷0.5=35÷0.5X=70(26) 6-3x=183x=183x÷3=18÷3X=6(27) 7(6.5+x)=87.57x+45.5=87.57x+45.5-45.5=87.5-45.57x=427x÷7=42÷7X=6(28) 0.273÷x=0.35x=0.273÷0.35X=O.78(29) 1.8x=0.9721. 8x÷l.8=0.972÷1.8X=O.54(30) x÷0.756=90x÷0.756×O.756=90×O.756X=68.04(31) O.l(x+6)=3.3×0.4O.lx+0.6=1.32O.lx+0.6-0.6=1.32-0.6O.Ix=O.72O.lx÷O.1=0.72÷0.1X=7.2(32) (27.5-3.5)÷x=424÷x=4x=24÷4X=6(33) 9-40=59-40+40=5+409x=459x÷9=45÷9X=5(34) x÷5+9=21x÷5+9-9=21-9x÷5=12x÷5×5=12×5X=60(35) 48-27+5x=315x+21-21=31-215x=10(45) 5x+12.5=32.35x+12.5-12.5=32. 3-12.5 5x=19. 85x÷5=19.8÷5 X=3.96 (46) 5(x+8)=1025x+40=1025x+40-40=102-405x=625x÷5=62÷5X=12.4(47) x+3x+10=704x+10=704x+10-10=70-104x=60 4x÷4=60÷4X=15(48) 3(x+3)=50-+3 3x+9=53-3x+x+9-9=53-x+x-94x=444x÷4=44÷4X=Il(49) 5x+15=605x+15-15=60-155x=455x÷5=45÷5X=9(50) 3.5-5x=23. 5-5x+5x=2+5x5x+2=3.55x+2-2=3.5-25x=l. 55x÷5=l. 5÷5X=O. 3(51) 0.3×7+4x=12,54x+2.1=12.54x+2.1-2.1=12. 5-2.14x=10.44x÷4=10.4÷4X=2,6 (52) x÷1.5-L25=0.755x÷5=10÷5X=2(36)10.5+x+21=56x+31.5-31.5=56-31.5x=24.5(37)x+2x+18=783x+18-18=78-183x=603x÷3=60÷3X=20(38)(200-)÷5=30(200-)÷5×5=30×5200-=150200-x+x=150+x15Q+x=200X+150-150=200-150X=50(39) (-140)÷70=4(-140)÷70×70=4×70X-140=280X-140+140=280+140(40) X=420(41) 20-9x=29x=20-29x=189x÷9=18÷9X=2(41)x+19.8=25.8X+19.8-19.8=25.8-19.8X=6(42) 5.6x=33.65.6x÷5.6=33.6÷5.6X=6(43) 9.8-=3.89.8-+x=3.8+x3.8+x=9.8X=9.8-3.8X=6(44)75.6÷x=12.6X=75.6÷12.6X=6x÷l.5-1.25+1.25=0.75+1.25x÷l.5=2x÷1.5×1.5=2×1.5X=3(53) 4-1.3×6=2.64-l.3×6+l.3×6=2.6+1.3×64x=10.44x÷4=10.4÷4X=2.6(54) 6x+12.8=15.86x+12.8-12.8=15.8-12.86x=36x÷6=3÷6X=O.5(55) 150×2+3x=6903x+300=6903x+300-300=690-3003x=3903x÷3=390÷3X=130(56) 2-20=42-20+20=4+202x=242x÷2=24÷2X=12(57) 3x+6=183x+6-6=18-63x=123x÷3=12÷3X=4(58) 2(2.8+x)=10.45.6+2x=10.42x+5.6-5.6=10.4-5.62x=4.82x÷2=4.8÷2X=2.4(59) (-3)÷2=7.5(-3)÷2×2=7.5×2X-3=15X=18(60) 13.2x+9x=33.322.2x=33.322.2x÷22.2=33.3÷22.2X=1.5(61) 3x=x+1003-=-+1002x=1002x÷2=100÷2X=50(62)x+4.8=7.2X=7.2-4.8X=2.4(63) 6x+18=486x+18-18=48-186x=306x÷6=30÷6x=5(64) 3(x+2.1)=10.53x+6.3=10.53x=10.5-6.33x=423x÷3=4.2÷3X=1.4(65) 12-9x=8.73x=8.73x÷3=8.7÷3X=2.9(66) 13(x+5)=16913x+65=16913x+65-65=169-6513x=10413x÷13=104÷13X=8(67)2-97=34.22-97+97=34.2+972x=131.22x÷2=131.2÷2X=65.6(68)3.4-48=26.83.4-48+48=26.8+483.4x=74.83.4x÷3.4=74.8÷3.4X=22(69) 42x+25x=13467x=13467x÷67=134÷67X=2(70) 1.5(x+1.6)=3.61.5x+2.4=3.61.5x=3.6-2.41. 5x=l.21.5x÷l.5=1.2÷1.5X=0.8(71) 2(-3)=5.82-6=5.82-6+6=5.8+62x=11.82x÷2=11.8÷2X=5.9(72) 65x+7=13765x+7-7=137-765x=13065x÷65=130÷65X=2(73) 9x+4×2,5=919x÷10=919x+10-10=91-109x=819x÷9=81÷9X=9(74) 4.2x+2.5x=1346.7x=1346.7x÷6.7=134÷6.7X=20(75) 10.5x+6.5x=5117x=5117x÷17=51÷17X=3(76) 89-43x=9.246x=9.246x÷46=9.2÷46X=O.2(77) 5-45=1005-45+45=100+455x=1455x÷5=145÷5X=29(78) 1.2-0.5x=6.3O.7x=6.3O.7x÷0.7=6.3÷0.7X=9(79) 23.4=2x2x÷2=23.4÷2X=Il.7(80) 4-=48.63x=48.63x÷3=48.6÷3X=16.2(81) 4.5-=283.5x=283. 5x÷3.5=28÷3.5X=8(82) X-5.7=2.15X=5.7+2.15X=7.85(83) 5X-2X=183x=183x÷3=18÷3X=6(84) 3X-H).7=73x+0.7-0.7=7-0.73x=6.33x÷3=6.3÷3X=2.1(85) 3.5×2=4.2+x4.2+x=7X=7-4.2X=2.8(86) 26×1.5=2x+102x+10=392x+10-10=39-102x=292x÷2=29÷2X=14.5(87) 0.5×16-16×0.2=4x4x=4,84x÷4=4,8÷4X=1.2(88) 139.25-X=0.403X=139.25-0.4038x=8 X=I(99) 9-3x=66x=6 X=I(100) 6-8=4 6-8+8=4+8 6x=12X=2(101) 5x+x=96x=96x÷6=9÷6x=l. 5(102) 8-8=6x8-8+8=6x+8 8x-6x=6x-6x+82x=82x÷2=8÷2X=44(103)x=2Q444x÷7=20÷555X=25(104) 2-6=122x-6+6=12+6 2x=18 2x÷2=18÷2 X=9(105) 7x+7=147x+7-7=14-7 7x=7 7x÷7=7÷7 X=I (106) 6-6=0 6-6+6=0+6 6x=6 X=I (107)5x+6=ll5x+6-6=ll-6 5x=5 X=I (108)2x-8=102-8+8=10+8 2x=18X=138.847(89) 18.9÷X=0.3X=18.9÷0.3X=63(90) 23x=14x+2723x-14x=14x-14x+279x=279x÷9=27÷9X=3(91) x+14x=7515x=7515x÷15=75÷15X=5(92) 95-5x=8095-5x+5x=80+5x5x+80=955x+80-80=95-805x=15X=3(93) 1.8+6x=546x=54-l.86x=52.26x÷6=52.2÷6X=8.7(94) 6.7-60.3=6.76.7x=60.3+6.76.7x=676. 7x÷6.7=67÷6.7X=IO(95) 9÷4x=534x=53-94x=444x÷4=44÷4X=Il(96) 2x+8=162x=16-82x=82x÷2=8÷2X=4(97) 20-14x=246x=246x÷6=24÷6X=4(98) x+7x=83x=6 3x÷3=6÷3X=2 (119) 5-3x=4 2x=4 2x÷2=4÷2X=2 (120) 2x+16=19 2x+16-16=19-16 2x=3 2x÷2=3÷2X=1.5 (121) 5x÷8=19 5x+8-8=19-8 5x=ll 5x÷5=ll÷5X=2.2 (122) 14-6x=8 14-6x+6x=8+6x 6x+8-8=14-8 6x=6 X=I (123) 15+6x=27 6x+15-15=27-15 6x=12 6x÷6=12÷6X=2 (124) 5-8x=4 5-8x+8x=4+8x 8x+4-4=5-4 8x=l 8x÷8=l÷8 X=O. 125 (125) 7x÷8=15 7x+8-8=15-8 7x=7X=I (126)9-2x=l9-2x+2x=l+2x 2x+l-l=9-l2x=8 2x÷2=8÷2X=4X=9(109) 2.5-8=42.5-8+8=4+82.5x=122.5x÷2.5=12÷2.5X=4.83(110) -=74333X=7.75(111)3x+7=283x+7-7=28-73x=213x÷3=21÷3X=7(112)3-7=263-7+7=26+73x=333x÷3=33÷3X=Il(113)9-=168x=168x÷8=16÷8X=2(114)24x+x=5025x=5025x÷25=50÷25X=2(115)1.2-8=41. 2-8+8=4+81.2x=121.2x÷1.2=12÷1.2X=IO(116)3-8=313-8+8=31+83x=393x÷3=39÷3X=13(117)6x+6=126x+6-6=12-66x=6X=I(118)3x-3=38-7x+7x=l+7x 7x+l-l=8-l 7x=7 X=I(138) -30=12X-30+30=12+30 X=42(139) 6-21=216-21+21=21+21 6x=426x÷6=42÷6X=7(140) 6-3=6 6-3+3=6+36x=96x÷6=9÷6X=1.5(141) 9x=18 9x÷9=18÷9X=2(142) 4-18=144-18+18=14+18 4x=324x÷4=32÷4X=8(143) 5x+9=ll 5x+9-9=ll-95x=25x÷5=2÷5X=0.4(144) 17-2x=ll 17-2x+2x=ll+2x2x+l1-11=17-11 2x=62x÷2=6÷2X=3(145) x+4+8=23X+12=23 X=23-12 X=Il(146) 7-12=97-12+12=9+127v-015x+4-4=9-45x=5X=I(128)10-=8X=10-8X=2(129)8x+9=178x+9-9=17-98x=8X=I(130)9+6x=156x+9-9=15-96x=6X=I(131)x+9x=4÷7IOx=Il10x÷10=ll÷10X=Ll(132)2x+9=172x+9-9=17-92x=82x÷2=8÷2X=4(133)8-4x=68-4x+4x=6+4x4x+6-6=8-64x=24x÷2=2÷4X=0.5(134)6-7=286-7+7=28+76x=366x÷6=36÷6Y=A(135)7-9=207-9+9=8+207x=287x÷7=28÷7X=4(136)-56=lX=56+lX=57(137)8-7x=l7x÷7=21÷7X=3(147) X-5.7=2.15x=5.7+2.15X=7.85(148) 5X-2X=183x=183x÷3=18÷3X=6(149) 3X+0.5=53x+0.5-0.5=5-0.53x=4,53x÷3=4.5÷3X=L5(150) 3.5×2=4x4x=74x÷4=7÷4X=l.75(151) 26×1.5=2x2x=392x÷2=39÷2X=18(152) O.5×16-16×O.l=4x4x=6.44x÷4=6.4÷4X=1.6(153) 9.26-X=0.402X=9.26-0.402X=8.858(154) 36.9÷X=0.3X=36.9÷0.3X=123(155) X÷0.5=2.6X=0.5×2.6X=1.3(156)93-5x=8093-5X+5X=80+5X5X+80-80=93-805X=135X÷5=13÷5X=26(157) 180-6x=54180-6X+6X=54+6X6X=1266X÷6=126÷6X=21(158) 9÷4x=404X+9-9=40-94X=314X÷4=31÷4X=7.75(159) O.2-0.4+0.5=3.7O.2X-0.5+0.5-0.4+0.4=3.7-0.5+0.4O.2X=3.6O.2X÷0.2=3.6÷0.2X=18(160) 9.4x0.4x=16.29X=16.29X÷9=16.2÷9X=L8(161) 92-4x=2092-4X+4X=20+4X4X+20-20=92-204X=724X÷4=72÷4(162) X=18(163) 7x÷6=l.47x÷6×6=1.4×67X=8.47X÷7=8.4÷7X=1.2(164) 16x÷34x=l50X=l50X÷50=l÷50X=O.02(165) 18-14x=124X=124X÷4=12÷4X=3(166) 3-42÷14=153X-3=153X-3+3=15+33X=183X÷3=18÷3X=6(167) 12÷4x=564X+12-12=56-12(176)X-0.8X=64X=44O.2X=64X÷4=44÷40.2X÷0.2=6÷0.2X=IlX=30(177)12x+8x=4.8(167)22-14x=1220X=4.822-14X+14X=12+14X20X÷20=48÷2014X+12-12=54-12X=2414X=42(178)7(-2)=4914X÷14=42÷147X-14=49X=37X-14+14=49+14(168)X+8.3=10.77X=63X=10.7-8.37X÷7=63÷7X=2,4X=9(169)5x=30(179)4×8+2x=365X÷5=30÷52X+32=36X=62X+32-32=36-32(170)-5.6=9.42X=4X=5.6+9.42X÷2=4÷2X=15(171)X=2x÷0.8=90(180)(-2)÷3=7X=0.8×90X-2=3×7X=72X-2=21X=23(172)3-8=16(181)x÷5÷9=213X-8+8=16+8X÷5=21-93X=24X÷5=123X÷3=24÷3X=12×5X=8X=60(173)3x÷9=27(182)(300-)÷5=303X+9-9=27-9300-X=30×53X=18300-X=1503X÷3=18÷3X=300-150X=6X=150(174)5.3+7x=7.4(183)91÷x=1.37X+5.3-5.3=7.4-5.3X=91÷1.37X=2.1X=707X÷7=2.1÷7X=O.3(184)41-3x=17(175)3x÷5=4.841-3X+3X=17+3X3X=48×53X+17-17=41-173X=243X=243X÷3=24÷33X÷3=24÷3X=8X=8