1、五年級解方程題有答案(12) X+8. 3=10. 7(1) (0. 5+x)+x=9. 84-2(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) 7. 5+2X=15(19)3x+5=4.8(8) 1. 2x=81. 6(25)0.5x+8=43(7) x+5. 6=9. 4(26)6x-3x=18(10) x-0

2、. 7x=3.6(27)7 (6. 5+x) =87. 5(ll)914-x=1.3(28)0. 2734-x=0. 35(40) 20-9x=2(29)1. 8x=0. 972(41)x+19. 8=25. 8(39) (x-140) 4-70=4(51) 0.3X7+4x=12.5(42)5.6x=33.6(30)x-7-0.756=90(31)0. l(x+6)=3. 3X0.4(43) 9. 8-x=3. 8(44) 75.6+x=12.6(32)(27. 5-3. 5) +x=4(33)9x-40=5(45)5x+12. 5=32. 3(34) x 4-5+9=21(46)5(x+8

3、)=102(47)x+3x+10=70(36)10.5+x+21=56(48) 3(x+3)=50-x+3(35)48-27+5x=31(49)5x+15=60(37) x+2x+18=78(50)3.5-5x=2(38) (200-x)+5=30(52) x-rl. 5-1.25=0. 75(64) 3(x+2.1)=10. 5(53) 4x-L3X6=2.6(54) 6x+12. 8=15. 8(55) 150X2+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(

4、61) 3x=x+100(62) x+4. 8=7. 2(63) 6x+18=48(65) 12x-9x=8.7(66) 13(x+5)=169(67) 2x-97=34. 2(68) 3. 4x-48=26. 8(69) 42x+25x=134(70) L5(x+1. 6) =3. 6(71) 2 (x-3) =5. 8(72) 65x+7=137(73) 9x+4X2.5=91(74) 4.2 x+2. 5x=134(75) 10. 5x+6. 5x=51(76) 89x-43x=9.2(88) 13 9. 25-X=0. 403(77) 5x-45=100(89) 18.9-rX=0.

5、3(87) 0.5X16-16X0. 2=4x(90) 23x=14x+27(78) 1. 2x-0. 5x=6. 3(79) 23. 4=2x(91) x+14x=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) 6.7x-60.3=6.7(83) 5X-2X=18(95) 9+4x=53(84) 3X+0. 7=7(96) 2x+8=16(85) 3.5X2= 4. 2+x(97) 20x-14x=24(86) 26X1. 5= 2x+10(98) x+7x=8(99) 9x-3x=

6、6(lll)3x+7=28(100) 6x-8=4(101) 5x+x=9(102)8x-8=6x4(103) -x=20J(104)2x-6=12(105)7x+7=14(106)6x-6=0(107)5x+6=ll(108)2x-8=10(109)2.5x-8=4/、3(110) x-=74(112) 3x-7=26(113) 9x-x=16(114) 24x+x=50(115) 1. 2x-8=4(116) 3x-8=31(117) 6x+6=12(118) 3x-3=3(119) 5x-3x=4(120) 2x+16=19(121) 5x+8=19(122) 14-6x=8(123)

7、15+6x=27(135) 7x-9=20(134) 6x-7=28(124) 5-8x=4(136) x-56=l(125) 7x+8=15(137) 8-7x=l(126)9-2x=l(138)x70=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=ll(132) 2x+9=17(144) 17-2x=ll(133) 8-4x=6(145) x+4+8=23(146) 7x-12=9(

8、157) 180-6x=54(168) X+8. 3=10. 7(158) 9+4x=40(147) X-5. 7=2. 15(159) 0.2x-04+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) 3.5X2= 4 x(162) 7x+6=1.4(151) 26X1.5= 2x(163) 16x+34x=l(152) 0.5X16-16X0. l=4x(164) 18x-14x=12(153) 9. 26-X=0. 402(165) 3 x42+14=15(154) 36.94-X

9、=0. 3(166) 12+4x=56(155) X4-0. 5=2.6(156) 93-5x=80(167) 22-14x=12(177) 12x+8x=4. 8(169) 5x =30(178) 7(x-2)=49(170) x-5. 6=9. 4(179) 4X8+2x=36(171) x-0. 8=90(180) (x-2) 4-3=7(172) 3x-8=16(181) x 4-5+9=21(173) 3x+9=27(182)(300-x) 4-5=30(174) 5. 3+7x=7. 4(183) 91-rx =1.3(175) 3x4-5=4. 8(176) X-0. 8X=6(

10、184) 41-3x=17五年級解方程180題答案(1) (0.5+x)+x=9.8+20. 5+2x=4. 90. 5+2x-0. 5=4. 9-0. 52x=4.42x-F 2=4.44-2X=2.2(2) 2(X+X+0.5)=9.82x+2x+l=9. 84x+l-l=9. 8-14x=8. 84x+4=88+4X=2.2(3) 25000+x=6x25000+x-x=6x-x5x=250005x4-5=250004-5X=5000(4) 3200=440+5X+X6x+440=32006x+450-450=3200-4406x=27606x4-6=27604-6X=460(5) X-

11、0. 8X=60. 2x=60. 2x4-0. 2=64-0.2X=30(6) 12x-8x=4. 84x=4.84x4-4=4. 8-4X=1.2(7) 7.5+2X=152x+7. 5-7. 5=15-7. 52x=7. 5 2x4-2=7.54-2 X=3. 75(8) 1. 2x=81. 61.2x4-1. 2=81.64-1.2X=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. 3x4-0. 3=3.64-0.3X=12(U)914-x=1.3914-xXx=1.3Xx1. 3x=911.

12、 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=315x4-15=34-15XR.2(14) 3x-8 = 16 3x-8+8=16+83x=243x4-3=244-3X=8(15) 3x+9=27 3x+9-9=27-93x=183x4-3=184-33x=6 (16) 18(x-2)=27018x-36=270 18x-36+36=270+36 18x=30618x4-18=3064-18X=17 (17) 12x=300-4x 12x+4x=300-4x+4x16x=30016x4-16

13、=300-16X=18. 75 (18)7x+5. 3=7. 47x+5. 3-5. 3=7. 4-5. 37x=2. 1 7x4-7=2.14-7 X=0.3(19) 3x+5=4.83x+5X5=4.8X53x=243x4-3=244-3X=8(20) 30+x+25=8530+x+25-25= 85-25304-x=6030+xXx=60Xx30=60x60x4-60=304-60X=0.5(21) 1.4X8-2x=611. 2-2x+2x=6+2x11. 2=6+2x2x+6-6=U. 2-62x=5. 22x+2=5.2+2X=2.6(22) 6x-12. 8X3=0. 066x-

14、38. 4=0. 066x=38. 466x4-6=38. 46+6X=6. 41(23) 410-3x=170410-3x+3x=170+3x170+3x=4103x+170-170=410-1703x=240 3x4-3=2404-3 X=80(24) 3(x+0.5)=213x+l. 5=213x+l. 5-1. 5=21-1. 53x=19e 5 3x4-3=19.54-3 X=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=18 3x4-3=184-3 X=6(27) 7(6. 5

15、+x) =87. 57x+45.5=87. 57x+45. 5-45. 5=87. 5-45. 57x=427x4-7=424-7X=6(28) 0. 2734-x=0. 35x=0. 2734-0. 35X=0. 78(29) 1. 8x=0. 9721.8x4-L 8=0. 9724-1.8X=0. 54(30) x4-0.756=90x-0. 756X0. 756=90X0. 756X=68. 04(31) 0. l(x+6)=3.3X0.40. lx+0.6=1. 320. lx+0. 6-0. 6=1. 32-0. 60. lx=0. 720. lx+0.1=0. 72-?0.1X=

16、7.2(32) (27. 5-3. 5) +x=424+x=4 x=24+4 X=6(33) 9x-40=59x-40+40=5+409x=459x4-9=454-9X=5(34) x 4-5+9=21x 4-5+9-9=21-9x+5=12x 4-5X5=12X5 X=60 (35)48-27+5x=315x+21-21=31-215x=105x-5=104-5X=2(36)10.5+x+21=56x+31. 5-31. 5=56-31. 5 x=24. 5 (37)x+2x+18=783x+18-18=78-18 3x=60 3x3=604-3X=20 (38)(200-x) +5=30(

17、200-x) 4-5X5=30X5200-x=150200-x+x=150+x150+x=200X+150-150=200-150 X=50(39)(x-140) -r70=4(x-140) 4-70X70=4X70 X-140=280X-140+140=280+140 X=420 (40) 20-9x=2 9x=20-2 9x=18 9x4-9=184-9 X=2 (41)x+19. 8=25. 8X+19. 8-19. 8=25. 8-19. 8X=6(42) 5. 6x=33. 65. 6x4-5. 6=33. 6+5. 6X=6(43) 9. 8-x=3. 8 9.8-x+x=3. 8

18、+x3. 8+x=9. 8X=9. 8-3. 8X=6(44) 75.64-x=12.6X=75.6-rl2.6X=6(45) 5x+12. 5=32. 35x+12. 5-12. 5=32. 3-12. 55x=19. 85x4-5=19.84-5X=3. 96(46) 5(x+8)=1025x+40=1025x+40-40=102-405x=625x-r 5=62 4-5X=12. 4(47) x+3x+10=704x+10=704x+10-10=70-104x=604x4-4=604-4X=15(48) 3(x+3)=50-x+33x+9=53-x3x+x+9-9=53-x+x-94x=

19、444x4-4=444-4X=U(49) 5x+15=605x+15-15=60-155x=455x4-5=454-5X=9(50) 3.5-5x=23.5-5x+5x=2+5x5x+2=3. 55x+2-2=3. 5-25x=l. 55x4-5=1.54-5X=0.3(51) 0.3X7+4x=12<54x+2.1=12. 5 4x+2.1-2.1=12. 5-2.1 4x=10. 4 4x4-4=10.44-4X=2.6(52) x-rl. 5-1. 25=0. 751. 5-1.25+1. 25=0. 75+1. 25 x+1. 5=2x4-1.5XL5=2X1.5X=3(53)

20、4x-1.3X6=2.64x-L 3X6+1. 3X6=2. 6+1. 3X6 4x=10. 4 4x4-4=10. 4+4X=2.6(54) 6x+12. 8=15. 86x+12. 8-12. 8=15. 8-12. 8 6x=3 6x+6=3+6X=0.5(55) 150X2+3x=6903x+300=6903x+300-300=690-3003x=3903x4-3=3904-3X=130(56) 2x-20=42x-20+20=4+202x=242x+2=24+2X=12(57) 3x+6=183x+6-6=18-63x=123x4-3=123X=4(58) 2(2.8+x)=10.4

21、5. 6+2x=10.42x+5. 6-5. 6=10.4-5. 62x=4. 82x-r2=4.8-r2X=2.4(59) (x-3)+2=7.5(x-3) +2X2=7. 5X2X-3=15X=18(60) 13.2x+9x=33. 322. 2x=33. 322. 2x4-22. 2=33.34-22.2X=L5(61) 3x=x+1003x-x=x-x+1002x=1002x4-2=1004-2X=50(62) x+4. 8=7. 2X=7. 2-4. 8X=2.4(63) 6x+18=486x+18-18=48-186x=306x4-6=304-6x=5(64) 3(x+2.1)=1

22、0. 53x+6. 3=10. 53x=10. 5-6. 33x=4. 23x4-3=4.24-3X=1.4(65) 12x-9x=873x=8. 73x4-3=8.74-3X=2.9(66) 13(x+5)=16913x+65=16913x165-65=169-6513x=10413x4-13=1044-13X=8(67) 2x-97=34 22x-97+97=34.2+972x=131. 22x+2=131.2+2X=65. 6(68) 3. 4x-48=26. 83.4x-48+48=26. 8+483. 4x=74. 83. 4x4-3. 4=74.84-3.4X=22(69) 42x

23、+25x=13467x=13467x4-67=1344-67X=2(70) L5(x+1.6) =3-61. 5x+2.4=3. 61. 5x=3. 6-2.42. 5x=l. 21.5x-rl. 5=1. 24-1.5X=0.8(71) 2(x-3)=582x-6=5. 82x-6+6=5. 8+62x=ll.82x4-2=11.84-2X=5.9(72) 65x+7=13765x+7-7=137-765x=13065x4-65=1304-65X=2(73) 9x+4X2.5=919x+10=919x+10-10=91-109x=819x4-9=814-9X=9(74) 4.2 x+2. 5

24、x=1346. 7x=1346. 7x4-6.7=1344-6. 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=1455x4-5=1454-5X=29(78) 1. 2x-O. 5x=6. 30. 7x=6. 30. 7x0. 7=6.34-0.7X=9(79) 23. 4=2x2x4-2=2X44-2X=1L 7(80) 4x-x=48. 63x=48. 63x4-3=48.64-3X=16. 2

25、(81) 4.5x-x=283. 5x=283. 5x4-3. 5=284-3.5X=8(82) X-5. 7=2.15X=5. 7+2.15X=7. 85(83) 5X-2X=183x=183x4-3=184-3X=6(84) 3X+0.7=73x+0. 7-0. 7=7-0. 73x=6. 33x4-3=6.34-3X=2.1(85) 3.5X2= 4. 2+x4.2+x=7 X=7-4. 2 X=2.8(86) 26X1. 5= 2x+104x4-4=444-4X=ll(96) 2x+8=162x=16-82x=82x4-2=84-2X=4(97) 20x-14x=246x=246x4-

26、6=244-6X=4(98) x+7x=88x=8X=1(99) 9x-3x=66x=6X=1(100) 6x-8=46x-8+8=4+86x=12X=2(101) 5x+x=96x=96x4-6=94-6x=l. 5(102) 8x-8=6x8x-8+8=6x+88x-6x=6x-6x+82x=82x4-2=84-2X=44(103) -x=20JX=25 (104)2x-6=122x-6+6=12+62x=182x4-2=184-2X=9 (105)7x+7=147x+7-7=14-77x=72x+10=392x+10-10=39-102x=292x-r 2=294-2 X=14. 5(8

27、7) 0.5X16-16X0. 2=4x4x=4.84x4-4=4.84-4X=1.2(88) 13 9. 25-X=0. 403X=139. 25-0. 403X=138. 847(89) 18.9+X=0. 3 X=18.94-0.3 X=63(90) 23x=14x+27 23x-14x=14x-14x+27 9x=279x4-9=274-9X=3(91) x+14x=7515x=7515x4-15=754-15X=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=

28、52. 26x4-6=52.24-6X=8.7(94) 6. 7x-60. 3=6. 76. 7x=60. 3+6. 76. 7x=676. 7x4-6. 7=674-6.7 X=10(95) 9+4x=534x=53-94x=441. 2x=12L2x+L 2=12+2.2X=10(116) 3x-8=313x-8+8=31+83x=393x4-3=39-r3X=13(117) 6x+6=12 6x+6-6=12-66x=6X=1(118) 3x-3=33x-3+3=3+33x=63x-r3=6-r3X=2(119) 5x-3x=42x=42x+2=4+2X=2(120) 2x+16=19

29、2x+16-16=19-162x=32x-r 2=34-2X=1.5(121) 5x+8=19 5x+8-8=19-85x=U5x4-5=114-5X=2.2(122) 14-6x=8 14-6x+6x=8+6x6x+8-8=14-86x=6X=1(123) 15+6x=27 6x+15-15=27-156x=126x4-6=124-6X=2(124) 5-8x=4 5-8x+8x=4+8x7x+7=7+7X=1(106)6x-6=06x-6+6=0+66x=6 X=1 (107)5x+6=ll5x+6-6=ll-65x=5X=1 (108)2x-8=102x-8+8=10+8 2x=18X=

30、9 (109)2.5x-8 二 42. 5x-8+8=4+82.5x=122. 5x4-2.5=124-2. 5X=4.83(110) x=743 33X- - + -=7+- 4 44X=7.75(111) 3x+7=283x+7-7=28-73x=213x4-3=214-3X=7(112) 3x-7=263x-7+7=26+73x=333x4-3=334-3X=ll(113) 9x-x=168x=168x4-8=164-8X=2(114) 24x+x=5025x=5025x4-25=504-25X=2(115) 1. 2x-8=41.2x-8+8=4+8X=0.5(134) 6x-7=28

31、6x-7+7=28+76x=366x+6=36+6X=6(135) 7x-9=20 7x-9+9=8+20 7x=28 7x4-7=284-7X=4 (136) x-56=lX=56+l X=57 (137) 8-7x=l 8-7x+7x=l+7x 7x+l-l=8-l 7x=7X=1(138) x-30=12 X-30+30=12+30X=42 (139) 6x-21=21 6-21+21=21+21 6x=42 6x4-6=424-6 X=7 (140) 6x-3=6 6x-3+3=6+3 6x=9 6x4-6=94-6X=1.5 (141) 9x=18 9x+9=18+9 X=2 (14

32、2) 4x-18=14 4x-18+18=14+18 4x=32 4x+4=32+4X=8(143) 5x+9=ll8x+4-4=5-4 8x=l 8x4-8=1 -8 X=0.125 (125) 7x+8=15 7x+8-8=15-8 7x=7 X=1 (126)9-2x=l9-2x+2x=l+2x 2x+l-l=9-l 2x=8 2x4-2=84-2 X=4 (127) 4+5x=9 5x+4-4=9-4 5x=5 X=1 (128) 10-x二8 X=10-8 X=2 (129) 8x+9=17 8x+9-9=17-9 8x=8 X=1 (130) 9+6x=15 6x+9-9=15-9

33、 6x=6 X=1 (131) x+9x=4+7 10x=U 10x4-10=11-r 10 X=l.l (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 4x4-2=24-45x+9-9=ll-9 5x=2 5x4-5=24-5 X=0.4 (144) 17-2x=ll 17-2x+2x=ll+2x 2x+U-ll=17-ll 2x=6 2x4-2=64-2 X=3 (145) x+4+8=23 X+12=23 X=23-12 X=ll (146)7x-12=97x72+12

34、=9+127x=217x4-7=214-7X=3(147) X-5. 7=2.15x=5. 7+2. 15X=7. 85(148) 5X-2X=18 3x=18 3x4-3=184-3X=6(149) 3X +0. 5=5 3x+0. 5-0. 5=5-0. 5 3x=4.5 3x+3=4.5+3 X=1.5(150) 3.5X2= 4 x 4x=7 4x4-4=74-4 X=l. 75(151) 26X1.5= 2x 2x=39 2x4-2=394-2X=18(152) 0.5X16-16X0. l=4x 4x=6. 4 4x+4=6. 4+4X=1.6(153) 9.26-X=0.402

35、X=9. 26H). 402 X=8. 858(154) 36.9+X=0.3X=36. 94-0.3X=123(155) X+0.5=2.6X=0.5X2.6X=1.3(156) 935x=80 93-5X+5X=80+5X 5X+80-80=93-805X=135X4-5=134-5X=2.6(157) 180-6x=54 180-6X+6X=54+6X 6X+54-54=180-546X=1266X4-6=1264-6X=21(158) 9+4x=404X+9-9=40-94X=314X4-4=314-4X=7. 75(159) 0.2x-04+05=3.70. 2X-0. 5+0. 5-0. 4+0. 4=3. 7-0. 5+0. 40. 2X=3. 60.2X4-0. 2=3.6+0.