五级解方程练习题题及答案ok

1、五年级解方程180题有答案(1) (0.5+x)+x=9.8 +2(8)1.2x=81.6(2) 2(X+X+0.5)=9.8(7) x+5.6=9.4(3) 25000+x=6x(10)x-0.7x=3.6(4) 3200=440+5X+X(11)91 +x=1.3(5) X-0.8X=6(12) X+8.3=10.7(6)12x-8x=4.8(13) 15x =3(7) 7.5+2X=15(14) 3x 8=16(29) 1.8x=0.972(16) 18(x-2)=270(30) x + 0.756=90(17) 12x=300-4x(31) 0.1(x+6)=3.3 X 0.4(18)

2、 7x+5.3=7.4(32) (27.5-3.5)+x=4(19) 3x +5=4.8(33) 9x-40=5(25) 0.5x+8=43(34) x +5+9=21(26) 6x-3x=18(35) 48-27+5x=31(27) 7(6.5+x)=87.5(36) 10.5+x+21=56(46) 5(x+8)=102(38) (200-x)+ 5=30(39) (x-140) +70=4(40) 20-9x=2(41) x+19.8=25.8(42) 5.6x=33.6(43) 9.8-x=3.8(44) 75.6 +x=12.6(47) x+3x+10=70(48) 3(x+3)=5

3、0-x+3(49) 5x+15=60(50) 3.5-5x=2(51) 0.3 X7+4x=12.5(52) x + 1.5-1.25=0.75(53) 4x-1.3 X 6=2.6(55) 150 X 2+3x=690(56 ) 2x-20=4(57 ) 3x+6=18(58) 2(2.8+x)=10.4(59 ) (x-3) +2=7.5(60 ) 13.2x+9x=33.3(61) 3x=x+100(63) 6x+18=48(64) 3(x+2.1)=10.5(65) 12x-9x=8.7(66) 13(x+5)=169(67) 2x-97=34.2(68) 3.4x-48=26.8(6

4、9) 42x+25x=134(72) 65x+7=137(73) 9x+4 X 2.5 =91(74) 4.2 x+2.5x= 134(75) 10.5x+6.5x=51(76) 89x-43x=9.2(77) 5x-45=100(80) 4x-x=48.6(81) 4.5x-x=28(82)X-5.7=2.15(83) 5X-2X=18(84) 3X+0.7=7(85) 3.5 X2= 4.2+x(86) 26 X1.5= 2x+10(78) 1.2x-0.5x=6.3(98) x+7x=8(89) 18.9 +X=0. 3(99) 9x-3x=6(100) 6x-8=4(101) 5x+x

5、=9(90) 23x=14x +27(91) x +14x=75(92 ) 95- 5x=80(93) 1.8 +6x =54(102) 8x-8=6x(94) 6.7x 60.3 =6.7(95) 9 +4x = 53,4(103)-x=205(104) 2x-6=12(106) 6x-6=0(107) 5x+6=11(108) 2x-8=10(109) 2.5x-8=4(110) x- 3 =7 4(111) 3x+7=28(112) 3x-7=26(114) 24x+x=50(115) 1.2x-8=4(116) 3x-8=31(117) 6x+6=12(118) 3x-3=3(119)

6、 5x-3x=4(120) 2x+16=19(121) 5x+8=19(123) 15+6x=27(124) 5-8x=4(131) x+9x=4+7(132) 2x+9=17(133) 8-4x=6(125) 7x+8=15(134) 6x-7=28(126) 9-2x=1(135) 7x-9=20(127) 4+5x=9(136) x-56=1(128) 10-x=8(137) 8-7x=1(129) 8x+9=17(138)x-30=12(140) 6x-3=6(141) 9x=18(142) 4x-18=14(143) 5x+9=11(144) 17-2x=11(145) x+4+8=

7、23(146) 7x-12=9(147) X-5.7=2.15(149) 3X +0.5=5(150) 3.5 X2= 4 x(151) 26 X1.5= 2x(152) 0.5 X1616X0.1=4x(153) 9.26 -X=0.402(154) 36.9 +X=0.3(155) X +0.5=2.6(156) 93 5x = 80(157) 180-6x =54(166) 12 +4x=56(158) 9 +4x=40(167) 22 - 14x=12(159) 0.2x 0.4 +0.5 =3.7(168) X+8.3=10.7(160) 9.4x -0.4x = 16.2(169)

8、 5x =30(161) 92 4x = 20(170) x-5.6=9.4(162) 7x +6=1.4(171) x +0.8=90(163) 16x +34x=1(172) 3x 8= 16(164) 18x -14x=12(174) 5.3+7x=7.4(180) (x-2)+3=7(175) 3x +5=4.8(181) x +5+9=21(176) X-0.8X=6(182)(300-x) +5=30(177) 12x+8x=4.8(183) 91 +x =1.3(178) 7(x-2)=49(184) 41-3x=170.2x=6 0.2x +0.2=6 +0.2X=30 (6)

9、12x-8x=4.8 4x=4.84x +4=4.8 + 4 X=1.2(7) 7.5+2X=15 2x+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=9.4-5.6X=3.8(10)x-0.7x=3.60.3x=3.60.3x +0.3=3.6 +0.3X=12(11)91 +x= 1.3五年级解方程180题答案(1) (0.5+x)+x=9.8 + 20.5+2x=4.90.5+2x-0.5=4.9-0.52x=4.42x + 2=4.4

10、 + 2X=2.2(2) 2(X+X+0.5)=9.82x+2x+1=9.84x+1-1=9.8-14x=8.84x +4=8.8 + 4X=2.2(3) 25000+x=6x25000+x-x=6x-x5x=250005x +5=25000+5X=5000(4) 3200=440+5X+X6x+440=32006x+450-450=3200-4406x=27606x +6=2760+6X=460(5) X-0.8X=61.3x=911.3x + 1.3=91 +1.3 X=70(12) X+8.3=10.7 X+8.3-8.3=10.7-8.3X=2.4(13) 15x=315x+15=3+

11、15X=0.2(14) 3x -8=16 3x-8+8=16+83x=24 3x +3=24+3X=8(15) 3x+9=273x+9-9=27-93x=183x +3=18+33x=6(16) 18(x-2)=270 18x-36=27018x-36+36=270+3618x=306 18x+18=306 + 18X=17(17) 12x=300-4x 12x+4x=300-4x+4x16x=30016x + 16=300+ 16 X=18.75(18) 7x+5.3=7.47x+5.3-5.3=7.4-5.37x=2.1 7x + 7=2.1 + 7X=0.3(19) 3x +5=4.8

12、3x + 5X 5=4.8 X 5 3x=24 3x + 3=24 + 3 X=8(20) 30 +x+25=8530 + x+25-25=85-2530 + x=6030+xXx=60Xx30=60x60x+ 60=30 + 60X=0.5(21) 1.4 X 8-2x=611.2-2x+2x=6+2x11.2=6+2x2x+6-6=11.2-62x=5.22x + 2=5.2 + 2X=2.6(22) 6x-12.8 X 3=0.066x-38.4=0.066x=38.466x+6=38.46 +6X=6.41(23) 410-3x=170410-3x+3x=170+3x170+3x=41

13、03x+170-170=410-1703x=2403x +3=240+3X=80(24) 3(x+0.5)=213x+1.5=213x+1.5-1.5=21-1.53x=19.53x +3=19.5+3X=6.5(25) 0.5x+8=430.5x+8-8=43-80.5x=350.5x+0.5=35+0.5X=70(26) 6x-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=0.78(2

14、9) 1.8x=0.9721.8x+1.8=0.972 + 1.8X=0.54(30) x + 0.756=90x-0.756 X 0.756=90 X 0.756X=68.04(31) 0.1(x+6)=3.3 X 0.40.1x+0.6=1.320.1x+0.6-0.6=1.32-0.60.1x=0.720.1x+0.1=0.72 +0.1X=7.2(32) (27.5-3.5)+x=424+x=4x=24+ 4X=6(33) 9x-40=59x-40+40=5+409x=459x + 9=45 + 9 X=5(34) x+5+9=21x +5+9-9=21-9x +5=12x +5X 5

15、=12X 5X=60(35) 48-27+5x=315x+21-21=31-215x=105x +5=10+5 X=2(36) 10.5+x+21=56 x+31.5-31.5=56-31.5x=24.5(37) x+2x+18=78 3x+18-18=78-183x=603x +3=60+3X=20(38) (200-x)+ 5=30(200-x)+5X 5=30X5200-x=150 200-x+x=150+x 150+x=200 X+150-150=200-150X=50(39) (x-140)+ 70=4(x-140)+70X 70=4X70X-140=280X-140+140=280

16、+140X=420 (40) 20-9x=2 9x=20-2 9x=18 9x +9=18+9 X=2(41) x+19.8=25.8 X+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-x=3.89.8-x+x=3.8+x3.8+x=9.8X=9.8-3.8X=6(44) 75.6 +x=12.6X=75.6+12.6X=6(45) 5x+12.5=32.3 5x+12.5-12.5=32.3-12.5 5x=19.85x +5=19.8+5 X=3.96 (46) 5(x+8)=102 5x+40=10

17、2 5x+40-40=102-405x=625x + 5=62 + 5X=12.4(47) x+3x+10=704x+10=704x+10-10=70-104x=604x +4=60+4X=15(48) 3(x+3)=50-x+3 3x+9=53-x3x+x+9-9=53-x+x-94x=444x + 4=44 + 4X=11(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=1.55x + 5=1.5 + 5X=0.3(51) 0.3 X 7+4x=12.

18、54x+2.1=12.54x+2.1-2.1=12.5-2.14x=10.44x + 4=10.4 +4X=2.6(52) x -1.5-1.25=0.75x + 1.5-1.25+1.25=0.75+1.25x -1.5=2x 1.5 X 1.5=2 X 1.5X=3(53) 4x-1.3 X 6=2.64x-1.3X 6+1.3 X 6=2.6+1.3 X 64x=10.44x + 4=10.4 + 4X=2.6(54) 6x+12.8=15.86X+12.8-12.8=15.8-12.86x=3 6x+ 6=3 + 6X=0.5(55) 150 x 2+3x=6903x+300=6903

19、x+300-300=690-3003x=3903x - 3=390- 3X=130(56) 2x-20=42x-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) (x-3) -2=7.5(x-3 ) -2X 2=7.5 X2X-3=15X=18(60) 13.2x+9x=33.322.2x=33.322.2x-22.2=33.3 -22.2X=

20、1.5(61) 3x=x+1003x-x=x-x+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+6 x=5 (64) 3(x+2.1)=10.53x+6.3=10.53x=10.5-6.33x=4.23x + 3=4.2 + 3 X=1.4(65) 12x-9x=8.73x=8.73x +3=8.7 +3 X=2.9(66) 13(x+5)=169 13x+65=16913x+65-65=169-6513x=10413x+13=104 +13X=8(67)

21、 2x-97=34.22x-97+97=34.2+972x=131.22x +2=131.2+2 X=65.6(68) 3.4x-48=26.83.4x-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=1.21.5x+1.5=1.2 +1.5X=0.8(71) 2(x-3)=5.82x-6=5.82x-6+6=5.8+62x=11.82x +2=11.8+2X=5.9(72) 6

22、5x+7=13765x+7-7=137-765x=13065x +65=130 + 65X=2(73) 9x+4 X 2.5 =919x+10=919x+10-10=91-109x=819x +9=81 + 9 X=9(74) 4.2 x+2.5x= 1346.7x=1346.7x+6.7=134+6.7X=20(75) 10.5x+6.5x=5117x=5117x+17=51 + 17X=3(76) 89x-43x=9.246x=9.246x+ 46=9.2 + 46X=0.2(77) 5x-45=100 5x-45+45=100+455x=1455x +5=145+5X=29(78) 1.

23、2x-0.5x=6.30.7x=6.30.7x+ 0.7=6.3 + 0.7X=9(79) 23.4=2x2x +2=23.4+2X=11.7(80) 4x-x=48.63x=48.63x + 3=48.6 + 3 X=16.2(81) 4.5x-x=283.5x=283.5x + 3.5=28 + 3.5 X=8(82) X-5.7=2.15X=5.7+2.15X=7.85(83) 5X-2X=18 3x=183x +3=18+3 X=6(84) 3X+0.7=73x+0.7-0.7=7-0.73x=6.33x +3=6.3 +3 X=2.1(85) 3.5 X2= 4.2+x4.2+x=7

24、X=7-4.2X=2.8(86) 26 X 1.5= 2x+102x+10=392x+10-10=39-102x=292x + 2=29 + 2 X=14.5(87) 0.5 X 1616 X 0.2=4x 4x=4.84x+ 4=4.8 + 4X=1.2(88) 13 9.25-X=0.403X=139.25-0.403 X=138.847(89) 18.9 +X=0. 3X=18.9+0.3X=63(90) 23x=14x +27 23x-14x=14x-14x+279x=279x + 9=27+ 9X=3(91) x +14x=7515x=7515x +15=75+15X=5(92 )

25、95-5x= 8095-5x+5x=80+5x5x+80=955x+80-80=95-805x=15X=3(93) 1.8 +6x =546x=54-1.86x=52.26x +6=52.2+6 X=8.7(94) 6.7x -60.3 = 6.76.7x=60.3+6.76.7x=676.7x+ 6.7=67 + 6.7X=10(95) 9 +4x=534x=53-94x=444x + 4=44 + 4X=11(96)2x+8=162x=16-82x=82x +2=8+2X=4(97) 20x-14x=246x=246x + 6=24 + 6X=4(98)x+7x=88x=8X=1(99)

26、9x-3x=66x=6X=1(100) 6x-8=46x-8+8=4+86x=12X=2(101) 5x+x=9 6x=96x +6=9+6 x=1.5(102) 8x-8=6x8x-8+8=6x+88x-6x=6x-6x+8 2x=82x +2=8+2 X=4,4(103) -x=2054x/=20555X=25(104) 2x-6=122x-6+6=12+62x=182x +2=18+2 X=9 (105)7x+7=147x+7-7=14-77x=77x +7=7+7X=1(106) 6x-6=06x-6+6=0+66x=6X=1(107) 5x+6=115x+6-6=11-65x=5X=

27、1(108) 2x-8=102x-8+8=10+82x=18X=9(109) 2.5x-8=42.5x-8+8=4+82.5x=122.5x+2.5=12+2.5X=4.8(110) x- 3=7 4X-X=7.75(111) 3x+7=283x+7-7=28-73x=213xX=7(112) 3x-7=263x-7+7=26+73x=333x +3=33+3X=11(113) 9x-x=168x=168x +8=16 + 8X=2(114) 24x+x=5025x=5025x + 25=50+25X=2(115) 1.2x-8=41.2x-8+8=4+81.2x=121.2x +1.2=12

28、+1.2X=10(116) 3x-8=313x-8+8=31+83x=393x + 3=39 + 3X=13(117) 6x+6=126x+6-6=12-66x=6X=1(118) 3x-3=33x-3+3=3+33x=63x +3=6+3X=2(119) 5x-3x=42x=42x +2=4+2X=2(120) 2x+16=192x+16-16=19-162x=32x +2=3+2X=1.5(121) 5x+8=195x+8-8=19-85x=115x +5=11 + 5X=2.2(122) 14-6x=8 14-6x+6x=8+6x6x+8-8=14-86x=6X=1(123) 15+6x

29、=27 6x+15-15=27-156x=126x +6=12+6X=2(124) 5-8x=4 5-8x+8x=4+8x8x+4-4=5-48x=18x +8=1 + 8X=0.125(125) 7x+8=157x+8-8=15-87x=7X=1(126) 9-2x=1 9-2x+2x=1+2x2x+1-1=9-12x=82x +2=8+2X=4(127) 4+5x=95x+4-4=9-45x=5X=1(128) 10-x=8 X=10-8X=2(129) 8x+9=178x+9-9=17-98x=8X=1(130) 9+6x=156x+9-9=15-96x=6X=1(131) x+9x=4

30、+710x=1110x +10=11 + 10X=1.1(132) 2x+9=172x+9-9=17-92x=82x +2=8+2X=4(133) 8-4x=6 8-4x+4x=6+4x4x+6-6=8-64x=24x +2=2 + 4X=0.5(134) 6x-7=286x-7+7=28+76x=366x + 6=36 + 6 X=6(135) 7x-9=207x-9+9=8+207x=287x + 7=28 + 7X=4(136) x-56=1 X=56+1X=57(137) 8-7x=1 8-7x+7x=1+7x7x+1-1=8-17x=7X=1(138) x-30=12X-30+30=

31、12+30X=42(139) 6x-21=21 6x-21+21=21+216x=426x + 6=42 + 6 X=7(140) 6x-3=6 6x-3+3=6+36x=96x +6=9+6 X=1.5(141) 9x=189x +9=18+9 X=2(142) 4x-18=14 4x-18+18=14+184x=324x +4=32+4 X=8(143) 5x+9=11 5x+9-9=11-95x=25x +5=2+5 X=0.4(144) 17-2x=11 17-2x+2x=11+2x 2x+11-11=17-112x=62x +2=6+2 X=3(145) x+4+8=23 X+12=

32、23X=23-12X=11(146) 7x-12=9 7x-12+12=9+127x=217x +7=21+7 X=3(147) X-5.7=2.15 x=5.7+2.15 X=7.85(148) 5X-2X=183x=183x +3=18 + 3 X=6(149) 3X +0.5=53x+0.5-0.5=5-0.53x=4.53x + 3=4.5 + 3 X=1.5(150) 3.5 X2= 4 x4x=74x +4=7+4X=1.75(151) 26 X 1.5= 2x 2x=392x +2=39+2 X=18(152) 0.5 X 16 16X 0.1=4x 4x=6.44x+4=6.4

33、X=1.6(153) 9.26- X=0.402X=9.26-0.402 X=8.858(154) 36.9 +X=0.3X=36.9+0.3X=123(155) X +0.5=2.6 X=0.5 X 2.6X=1.3(156) 93 -5x=80 93-5X+5X=80+5X 5X+80-80=93-805X=135X +5=13 + 5X=2.6(157) 180-6x =54 180-6X+6X=54+6X 6X+54-54=180-54 6X=1266X +6=126 + 6X=21(158) 9 +4x=404X+9-9=40-94X=314X + 4=31 + 414X=42 14X+14=42+14X=3(168) X+8.3=10.7 X=10.7-8.3X=2.4(169) 5x =30 5X+5=30+5X=6(170) x-5.6=9.4 X=5.6+9.4X=15(171) x +0.8=90X=0.8 X 90 X=72(172)