1、五年級解方程題有答案(12) X+8.3=10.7(1) (0.5+x)+x=9.8 +2(13) 15x = 3(2) 2(X+X+0.5)=9.8(14) 3x 8= 16(3) 25000+x=6x(15) 3x+9=27(4) 3200=440+5X+X(16) 18(x-2)=270(5) X-0.8X=6(17) 12x=300-4x(6)12x-8x=4.8(18)7x+5.3=7.4 7.5+2X=15(19)3x 5=4.8(8)1.2x=81.6(25)0.5x+8=43 x+5.6=9.4(26)6x-3x=18(10)x-0.7x=3.6(27)7(6.5+x)=87.

2、5(11)91 +x= 1.32 / 19(28)0.273 *0.35(40) 20-9x=2(29)1.8x=0.972(41)x+19.8=25.84 / 19(42)5.6x=33.6(30)x 0.756=90(31)0.1(x+6)=3.3 X0.4(43) 9.8-x=3.8(32)(27.5-3.5) r=4(44) 75.6*12.6(33)9x-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-x+3(37) x+

3、2x+18=78(49)5x+15=60(38) (200-x)y=30(50)3.5-5x=2(39) (x-140) +70=4(51) 0.3X7+4x=12.5x+1.5-1.25=0.75(64) 3(x+2.1)=10.56 / 194x-1.3 X6=2.66x+12.8=15.8150 X2+3x=6902x-20=43x+6=182(2.8+x)=10.4(x-3) +2=7.513.2x+9x=33.33x=x+100x+4.8=7.26x+18=48(65) 12x-9x=8.7(66) 13(x+5)=169(67) 2x-97=34.2(68) 3.4x-48=26.

4、8(69) 42x+25x=134(70) 1.5(x+1.6)=3.6(71) 2(x-3)=5.8(72) 65x+7=137(73) 9x+4 X2.5=91(74) 4.2 x+2.5x =134(75) 10.5x+6.5x=51(52)(53)(54)(55)(56)(57)(58)(59)(60)(61)(62)(63)(76) 89x-43x=9.2(88) 13 9.25 X=0.4038 / 19(77) 5x-45=100(89) 18.9 +X=0. 3(78) 1.2x-0.5x=6.3(90) 23x=14x +27(79) 23.4=2x(91) x + 14x=

5、75(80) 4x-x=48.6(92) 95 5x=80(81) 4.5x-x=28(93) 1.8 +6x =54(82)X-5.7=2.15(94) 6.7x60.3=6.7(83) 5X-2X=18(95) 9 + 4x = 53(84) 3X+0.7=7(96) 2x+8=16(85) 3.5 X2= 4.2+x(97) 20x-14x=24(86) 26 X1.5= 2x+10(98) x+7x=8(87) 0.5 X16 16X0.2=4x(99) 9x-3x=610 / 19(111)3x+7=28(100) 6x-8=4(112) 3x-7=26(101) 5x+x=9(11

6、3) 9x-x=16(102)8x-8=6x(114) 24x+x=50,4(103)4 x=205(115) 1.2x-8=4(104)2x-6=12(116) 3x-8=31(105)7x+7=14(117) 6x+6=12(106)6x-6=0(118) 3x-3=3(107)5x+6=11(119) 5x-3x=4(108)2x-8=10(120) 2x+16=19(109)2.5x-8=4(110) x- 3=74(121) 5x+8=19(122) 14-6x=8(123) 15+6x=27(135) 7x-9=20(124) 5-8x=4(136) x-56=1(125) 7x+

7、8=15(137) 8-7x=1(126)9-2x=1(138)x-30=12(127) 4+5x=9(139) 6x-21=21(128) 10-x=8(140) 6x-3=6(129) 8x+9=17(141) 9x=18(130) 9+6x=15(142) 4x-18=14(131) x+9x=4+7(143) 5x+9=11(132) 2x+9=17(144)17-2x=11(133) 8-4x=6(145) x+4+8=23(134) 6x-7=2812 / 19(146) 7x-12=914 / 19(158) 9 +4x = 40(147) X-5.7=2.15(159) 0.2

8、x 0.4+ 0.5 = 3.7(148) 5X-2X=18(160) 9.4x 0.4x = 16.2(149) 3X +0.5=5(161) 92 4x = 20(150) 3.5 X2= 4 x(162) 7x -6=1.4(151) 26 X1.5= 2x(163) 16x +34x=1(152) 0.5 X16 16X0.1=4x(164) 18x 14x=12(153) 9.26X=0.402(165) 3 x 42+14=15(154) 36.9 »=0.3(166) 12 +4x=56(155) X+0.5=2.6(156) 93 5x = 80(167) 22 14

9、x=12(157) 180-6x =54(168) X+8.3=10.7(177) 12x+8x=4.816 / 19(169) 5x =30(178) 7(x-2)=49(170) x-5.6=9.4(179) 4 X8+2x=36(171) x 0.8=90(180) (x-2) 07(172) 3x 8 = 16(181) x y+9=21(173) 3x+9=27(182)(300-x)y=30(174) 5.3+7x=7.4(183) 91 +x =1.3(175) 3x y=4.8(176) X-0.8X=6(184) 41-3x=17五年級解方程180題答案28 / 19(1)

10、(0.5+x)+x=9.8 +2 0.5+2x=4.90.5+2x-0.5=4.9-0.52x=4.42x+2=4.4 +2X=2.2(2) 2(X+X+0.5)=9.8 2x+2x+1=9.8 4x+1-1=9.8-1 4x=8.84x+4=8.8 +4X=2.2(3) 25000+x=6x 25000+x-x=6x-x5x=250005x5=25000 +5X=5000(4) 3200=440+5X+X 6x+440=32006x+450-450=3200-4406x=27606xy=2760 抬X=460(5) X-0.8X=6 0.2x=60.2x +0.2=6 +0.2X=30(6)

11、12x-8x=4.84x=4.84x X=4.8 44X=1.2(7) 7.5+2X=152x+7.5-7.5=15-7.52x=7.52x+2=7.5 +2 X=3.75(8) 1.2x=81.61.2x+1.2=81.6 +1.2X=68(9) x+5.6=9.4 X+5.6-5.6=9.4-5.6X=3.8(10)x-0.7x=3.60.3x=3.6 0.3x+0.3=3.6 F.3X=12(11)91 +x=1.391 +x Xx=1.3 Xx1.3x=911.3x+1.3=91 +1.3X=70(12) X+8.3=10.7 X+8.3-8.3=10.7-8.3X=2.4(13) 1

12、5x = 315x +15=3 +15X=0.2(14) 3x -8= 16 3x-8+8=16+83x=243x +3=24 +3X=8(15) 3x+9=27 3x+9-9=27-93x=183x +3=18 +33x=6(16) 18(x-2)=27018x-36=27018x-36+36=270+3618x=30618x+18=306 +18X=17(17) 12x=300-4x12x+4x=300-4x+4x16x=30016x+16=300 +16X=18.75(18) 7x+5.3=7.47x+5.3-5.3=7.4-5.37x=2.17x+7=2.1 +7X=0.3(19) 3

13、x 抬=4.83x 抬 X5=4.8 X53x=243x -3=24 +3X=8(20) 30 r+25=8530 +x+25-25=85-2530 r=6030 +xXx=60 Xx30=60x60xy0=30 y0X=0.5(21) 1.4X8-2x=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 X3=0.066x-38.4=0.066x=38.466x y=38.46 氣X=6.41(23) 410-3x=170410-3x+3x=170+3x170+3x=4103x+170-170=41

14、0-1703x=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 F.5 X=70(26) 6x-3x=183x=18 3x+3=18 +3 X=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 +0.35 X=0.78(29) 1.8x=0

15、.9721.8x+1.8=0.972 +1.8 X=0.54(30) x+0.756=90x+0.756 X0.756=90 X0.756X=68.04(31) 0.1(x+6)=3.3 X0.40.1x+0.6=1.320.1x+0.6-0.6=1.32-0.60.1x=0.720.1x+0.1=0.72 +0.1 X=7.2(32) (27.5-3.5) +x=424 +x=4x=24 44 X=6(33) 9x-40=59x-40+40=5+409x=459x M=45 +9X=5(34) x 抬+9=21x-5+9-9=21-9x+5=12X=9.8-3.8X=6(44) 75.6 -

16、x=12.6 X=75.6 +12.6X=6(45) 5x+12.5=32.35x+12.5-12.5=32.3-12.55x=19.85x 抬=19.8 +5 X=3.96(46) 5(x+8)=1025x+40=1025x+40-40=102-405x=625x抬=62抬X=12.4(47) x+3x+10=704x+10=70 4x+10-10=70-104x=604x F=60 XX=15(48) 3(x+3)=50-x+3 3x+9=53-x3x+x+9-9=53-x+x-94x=444x X=44 +4X=11(49) 5x+15=605x+15-15=60-155x=455x +

17、5=45 +5X=9(50) 3.5-5x=23.5-5x+5x=2+5x5x+2=3.55x+2-2=3.5-25x=1.55x 抬=1.5 +5X=0.3(51 ) 0.3X7+4x=12.54x+2.1=12.5x 5X5=12 X5X=60(35) 48-27+5x=315x+21-21=31-215x=105x -5=10 代X=2(36) 10.5+x+21=56x+31.5-31.5=56-31.5 x=24.5(37) x+2x+18=783x+18-18=78-183x=603x +3=60 +3X=20(38) (200-x) +5=30(200-x) +5X5=30 X5

18、200-x=150200-x+x=150+x150+x=200X+150-150=200-150 X=50(39) (x-140) +70=4(x-140) +70 X70=4 X70X-140=280X-140+140=280+140X=420(40) 20-9x=2 9x=20-2 9x=18 9x+9=18 +9 X=2(41) x+19.8=25.8X+19.8-19.8=25.8-19.8 X=6(42) 5.6x=33.65.6x 氣.6=33.6 +5.6X=6(43) 9.8-x=3.89.8-x+x=3.8+x3.8+x=9.84x+2.1-2.1=12.5-2.14x=10

19、.44xX=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 X1.5=2 X1.5X=3(53) 4x-1.3 X6=2.64x-1.3 X6+1.3 X6=2.6+1.3 X64x=10.44x+4=10.4 +4 X=2.6 (54)6x+12.8=15.86x+12.8-12.8=15.8-12.86x=36xy=3 w X=0.555)150 X2+3x=6903x+300=690 3x+300-300=690-300 3x=3903x+3=390 +3 X=130 (56)2x-20=42x-

20、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 ) +2X2=7.5 X2X-3=15 X=18(60) 13.2x+9x=33.322.2x=33.322.2x +22.2=33.3 +22.2 X=1.5(61) 3x=x+100 3x-x=x-x+1002x=1002x+2=100 +2X=50(62) x+4.

21、8=7.2 X=7.2-4.8 X=2.4(63) 6x+18=48 6x+18-18=48-186x=306xy=30抬x=5(64) 3(x+2.1)=10.53x+6.3=10.53x=10.5-6.33x=4.23x +3=4.2 +3X=1.4(65) 12x-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) 2x-97=34.2 2x-97+97=34.2+972x=131.22x +2=131.2 +2X=65.6(68) 3.4x

22、-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 田7X=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) 65x+7=13765x+7-7=137-765x=13065xy5=130 y5X=2(73) 9x+4 X2.5 = 919x

23、+10=919x+10-10=91-109x=819xM=81 +9X=9(74) 4.2 x+2.5x = 1346.7x=1346.7x6.7=134 y.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) 1.2x-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)

24、 4x-x=48.63x=48.63x +3=48.6 +3X=16.2(81) 4.5x-x=283.5x=283.5x+3.5=28 +3.5X=8(82) X-5.7=2.15 X=5.7+2.15X=7.85(83) 5X-2X=183x=183x +3=18 +3X=6(84) 3X+0.7=73x+0.7-0.7=7-0.73x=6.33x +3=6.3 +3X=2.1(85) 3.5 X2= 4.2+x4.2+x=7X=7-4.2X=2.8(86) 26 X1.5= 2x+102x+10=392x+10-10=39-102x=292x +2=29 +2X=14.5(87) 0.5

25、 X16 16 X0.2=4x(97) 20x-14x=246x=246xy=24抬X=4(98)x+7x=88x=8X=1(99) 9x-3x=66x=6X=1(100) 6x-8=4 6x-8+8=4+86x=12X=2(101) 5x+x=96x=96xy=9抬x=1.5(102) 8x-8=6x8x-8+8=6x+88x-6x=6x-6x+82x=82x +2=8 +2X=44(103) -x=2054x/=20+4555X=25(104) 2x-6=122x-6+6=12+62x=182x +2=18 +2X=9(105) 7x+7=147x+7-7=14-77x=77x +7=7

26、+7X=1(106) 6x-6=06x-6+6=0+66x=6X=1(107) 5x+6=114x=4.84x +4=4.8 +4X=1.2(88) 13 9.25 -X=0.403 X=139.25-0.403 X=138.847(89) 18.9 以=0. 3 X=18.9 +0.3 X=63(90) 23x=14x +27 23x-14x=14x-14x+279x=279x +9=27 M X=3(91) x +14x=75 15x=75 15x+15=75 +15X=5(92) 95 - 5x = 80 95-5x+5x=80+5x 5x+80=955x+80-80=95-805x=1

27、5X=3(93) 1.8 +6x =546x=54-1.86x=52.26x y=52.2 田X=8.7(94) 6.7x -60.3 =6.7 6.7x=60.3+6.7 6.7x=676.7x 田.7=67 y.7 X=10(95) 9 + 4x = 53 4x=53-9 4x=44 4x+4=44 44 X=11(96) 2x+8=16 2x=16-8 2x=82x +2=8 +2X=45x+6-6=11-65x=5 X=1(108) 2x-8=102x-8+8=10+82x=18X=9(109) 2.5x-8=42.5x-8+8=4+82.5x=12(110)(111 )2.5x+2.

28、5=12 +2.5X=4.8x-3=74X-3+3=7+ 34 44X=7.753x+7=283x+7-7=28-73x=213x+3=21 +3X=7(112)3x-7=263x-7+7=26+73x=333x -3=33 +3X=11(113) 9x-x=16 8x=16 8x+8=16 yX=2 (114) 24x+x=50 25x=50 25x +25=50 +25 X=2 (115) 1.2x-8=4 1.2x-8+8=4+8 1.2x=121.2x+1.2=12 +1.2 X=10 (116) 3x-8=313x-8+8=31+83x=393x -3=39 +3X=13 (117)

29、 6x+6=12 6x+6-6=12-6 6x=6X=1 (118) 3x-3=3 3x-3+3=3+3 3x=6 3x+3=6 +3X=2 (119) 5x-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=11 5x+5=11 +5X=2.2 (122) 14-6x=8 14-6x+6x=8+6x 6x+8-8=14-8 6x=6X=1 (123) 15+6x=27 6x+15-15=27-15 6x=126xy=12抬X=2 (12

30、4) 5-8x=4 5-8x+8x=4+8x 8x+4-4=5-4 8x=1 8x+8=1 抬X=0.125 (125) 7x+8=15 7x+8-8=15-8 7x=7X=17x=287x -7=28 +7X=4(136) x-56=1X=56+1X=57(137) 8-7x=1 8-7x+7x=1+7x7x+1-1=8-17x=7X=1(138) x-30=12X-30+30=12+30X=42(139) 6x-21=216x-21+21=21+216x=426xy=42抬X=7(140) 6x-3=66x-3+3=6+36x=96x+6=9 田X=1.5(141) 9x=18 9x+9=

31、18 匐X=2(142) 4x-18=144x-18+18=14+184x=324x +4=32 +4X=8(143) 5x+9=115x+9-9=11-95x=25x+5=2 抬X=0.4(144) 17-2x=1117-2x+2x=11+2x2x+11-11=17-112x=62x +2=6 +2X=3(126)9-2x=19-2x+2x=1+2x2x+1-1=9-1 2x=82x+2=8 +2X=4(127) 4+5x=95x+4-4=9-45x=5 X=1 (128) 10-x=8X=10-8 X=2 (129) 8x+9=17 8x+9-9=17-9 8x=8X=1 (130) 9+

32、6x=15 6x+9-9=15-9 6x=6X=1 (131)x+9x=4+710x=1110x+10=11 +10X=1.1 (132) 2x+9=17 2x+9-9=17-9 2x=8 2x+2=8 +2 X=4 (133)8-4x=68-4x+4x=6+4x 4x+6-6=8-6 4x=2 4x+2=2 +4X=0.5 (134) 6x-7=28 6x-7+7=28+7 6x=36 6xy=36田X=6 (135) 7x-9=20 7x-9+9=8+20(145) x+4+8=23X+12=23X=23-12X=11(146) 7x-12=97x-12+12=9+127x=217x+7=

33、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=1.5(150) 3.5 X2= 4 x4x=74x+4=7 +4X=1.75(151) 26 X1.5= 2x2x=392x +2=39 +2X=18(152) 0.5 X16 16X0.1=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

34、=36.9 F.3X=123(155) X +0.5=2.6X=0.5 X2.6X=1.3(156) 93 - 5x=8093-5X+5X=80+5X5X+80-80=93-805X=135X 依=13 +5X=2.6(157) 180-6x =54180-6X+6X=54+6X6X+54-54=180-546X=1266Xy=126抬X=21(158) 9 +4x=40 4X+9-9=40-94X=314XX=31 +4X=7.75(159) 0.2x 0.4+ 0.5 = 3.70.2X-0.5+0.5-0.4+0.4=3.7-0.5+0.40.2X=3.60.2X +0.2=3.6 +0.2X=18(160) 9.4x