五年級(jí)解方程練習(xí)題180題及答案

1、五年級(jí)解方程練習(xí)題180題及答案(8)1.2x=81.6(2) 2(X+X+0.5)=9.8 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 7.5+2X=15(14) 3x 8=161 / 25(27) 7(6.5+x)=87.5(15) 3x+9=27(28) 0.273 +x=0.353 / 25(16) 18(x-2)=270(29) 1.8x=0.972(17) 12x=300-4x(30) x

2、+ 0.756=90(18) 7x+5.3=7.4(31) 0.1(x+6)=3.3 X 0.4(19) 3x +5=4.8(32) (27.5-3.5)+x=4(25) 0.5x+8=43(33) 9x-40=5(26) 6x-3x=18(34) x +5+9=21(35) 48-27+5x=31(43) 9.8-x=3.8(36) 10.5+x+21=56(44) 75.6 +x=12.6(37) x+2x+18=78(45) 5x+12.5=32.35 / 25(46) 5(x+8)=102(38) (200-x)+ 5=30(47) x+3x+10=70(39) (x-140) +70

3、=4(40) 20-9x=2(48) 3(x+3)=50-x+3(41) x+19.8=25.8(49) 5x+15=60(42) 5.6x=33.6(50) 3.5-5x=2(51) 0.3 X7+4x=12.5(59) (x-3) +2=7.57 / 25(52) x + 1.5-1.25=0.75(53 ) 4x-1.3 X 6=2.6(54 ) 6x+12.8=15.8(55 ) 150 X2+3x=690(56 ) 2x-20=4(57 ) 3x+6=18(58) 2(2.8+x)=10.4(60) 13.2x+9x=33.3(61) 3x=x+100(62) x+4.8=7.2(6

4、3) 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(75) 10.5x+6.5x=519 / 25(68) 3.4x-48=26.8(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 X 2.5 =91(74) 4.2 x+2.5x= 134(76) 89x-43x=9.2(77) 5x-45=100(78) 1.2x-0.5x=6.3(79) 23.4=2x(80) 4x-x=48.6(81) 4.

5、5x-x=28(82)X-5.7=2.15(83) 5X-2X=18(91) x +14x=75(84) 3X+0.7=7(92 ) 955x=8011 / 25(93) 1.8 +6x =54(85) 3.5 X2= 4.2+x(86) 26 X1.5= 2x+10(94) 6.7x 60.3 =6.7(87) 0.5 X 1616X0.2=4x(95) 9 +4x = 53(88) 13 9.25 X=0.403(96) 2x+8=16(89)18.9 +X=0. 3(97) 20x-14x=24(90) 23x=14x +27(98) x+7x=8(99) 9x-3x=6(107)5x+

6、6=1113 / 25(100) 6x-8=4(108) 2x-8=10(101) 5x+x=9(109) 2.5x-8=4(102) 8x-8=6x(110) x- 3 =7 4,4(103)x=205(111) 3x+7=28(104) 2x-6=12(112) 3x-7=26(105)7x+7=14(113) 9x-x=16(106) 6x-6=0(114) 24x+x=50(115) 1.2x-8=4(123) 15+6x=2715 / 25(116) 3x-8=31(124) 5-8x=4(117) 6x+6=12(125) 7x+8=15(118) 3x-3=3(126) 9-2x

7、=1(119) 5x-3x=4(127) 4+5x=9(120) 2x+16=19(128) 10-x=8(121) 5x+8=19(129) 8x+9=17(122) 14-6x=8(130) 9+6x=15(131) x+9x=4+7(139) 6x-21=2117 / 25(132) 2x+9=17(140) 6x-3=6(133) 8-4x=6(141) 9x=18(134) 6x-7=28(142) 4x-18=14(135) 7x-9=20(143) 5x+9=11(136) x-56=1(144) 17-2x=11(137) 8-7x=1(145) x+4+8=23(138)x-

8、30=12(146) 7x-12=9(147) X-5.7=2.15(155) X +0.5=2.619 / 25(148) 5X-2X=18(149) 3X +0.5=5(150) 3.5 X2= 4 x(151) 26 X1.5= 2x(152) 0.5 X1616X 0.1=4x(153) 9.26 X=0.402(154) 36.9 +X=0.3(156) 93 5x = 80(157) 180-6x =54(158) 9 +4x=40(159) 0.2x 0.4+0.5 = 3.7(160) 9.4x 0.4x =16.2(161) 92 4x=20(162) 7x +6=1.4(1

9、63) 16x +34x=1(171) x +0.8=9021 / 25(164) 18x 14x=12(172) 3x 8=16(165) 3 x 42+14=15(173) 3x+9=27(166) 12 +4x=56(174) 5.3+7x=7.4(167) 22 14x=12(175) 3x +5=4.8(168) X+8.3=10.7(176) X-0.8X=6(169) 5x =30(177) 12x+8x=4.8(170) x-5.6=9.4(178) 7(x-2)=49(183) 91 +x =1.3(180) (x-2)+3=7(181) x +5+9=2123 / 25(1

10、84) 41-3x=17(182)(300-x) +5=30五年級(jí)解方程練習(xí)題180題及答案五年級(jí)解方程練習(xí)題180題及答案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)=9.82x+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+6

11、X=460(5) X-0.8X=60.2x=60.2x +0.2=6+0.2X=30(6)12x-8x=4.84x=4.84x + 4=4.8 + 4X=1.2(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=9.4-5.6(10)x-0.7x=3.60.3x=3.60.3x +0.3=3.6 +0.3 X=12 (11)91 -x= 1.3 91 +xx x=1.3 x x1.3x=911.3x + 1.3=91

12、 +1.3X=70(12) X+8.3=10.7 X+8.3-8.3=10.7-8.3X=2.4(13) 15x=315x+15=3+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=30618x+18=306 + 18X=17(17) 12x=300-4x12x+4x=300-4x+4x16x=30016x + 16=300+ 16 X=18.75(18) 7x+5

13、.3=7.47x+5.3-5.3=7.4-5.37x=2.1 7x + 7=2.1 + 7 X=0.3(19) 3x +5=4.8 3x + 5X 5=4.8 X 53x=243x + 3=24 + 3X=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=38.4

14、66x+ 6=38.46 + 6X=6.41(23) 410-3x=170410-3x+3x=170+3x170+3x=4103x+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

15、=87.5-45.57x=427x+7=42+7X=6(28) 0.273+x=0.35x=0.273+ 0.35X=0.78(29) 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

16、+409x=459x + 9=45 + 9X=5(34) x+5+9=21x +5+9-9=21-9x +5=12x +5X 5=12X 5X=60(35) 48-27+5x=315x+21-21=31-215x=105x +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-x)+ 5=30(200-x)+5X 5=30X5200-x=150200-x+x=150+x150+x=200X+150-150=200-150X=50(

17、39) (x-140)+70=4(x-140)+70X 70=4 X 70X-140=280X-140+140=280+140X=420(40) 20-9x=29x=20-29x=189x +9=18+9 X=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-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=32.35x+12.5-12.5=32.3-12.55

18、x=19.85x +5=19.8+5 X=3.96 (46) 5(x+8)=1025x+40=1025x+40-40=102-405x=625x + 5=62 + 5 X=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+5 X=9 (50) 3.5-5x=23.5-5x+5x=2+5x5x+2=3.55x+2-

19、2=3.5-25x=1.55x +5=1.5+ 5X=0.3(51) 0.3 X7+4x=12.54x+2.1=12.54x+2.1-2.1=12.5-2.14x=10.44x +4=10.4+4 X=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=2.6 4x-1.3 X 6+1.3 X 6=2.6+1.3 X 64x=10.4 4x +4=10.4+4X=2.6(54) 6x+12.8=15.86x+12.8-12.8=15.8-12.86x=

20、3 6x +6=3 + 6X=0.5(55) 150 X 2+3x=6903x+300=6903x+300-300=690-3003x=3903x +3=390+3 X=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.

21、2x+9x=33.322.2x=33.322.2x+22.2=33.3 +22.2X=1.5(61) 3x=x+100 3x-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=1691

22、3x+65-65=169-6513x=10413x+13=104 +13X=8(67) 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=134 67x=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

23、.82x-6+6=5.8+62x=11.82x +2=11.8+2 X=5.9(72) 65x+7=137 65x+7-7=137-7 65x=13065x +65=130+65 X=2(73) 9x+4 X 2.5 =91 9x+10=91 9x+10-10=91-10 9x=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=51 17x=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+5 X=29(78) 1.2x-0.5x=6.30.7x=6.30.7x+0.7=6.3 +0.7X=9(79) 23.4=2x 2x + 2=23.4 + 2X=11.7(80) 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=2.15X=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