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1、-五年级方程题170道-第 15 页五年级方程题170道(1)(0.5+x)+x=9.82 (2)2(X+X+0.5)=9.8 (3)25000+x=6x (4)3200=440+5X+X (5)X-0.8X=6 (6)12x-8x=4.8 (7) 7.5+2X=15 (8)1.2x=81.6 (7)x+5.6=9.4 (10)x-0.7x=3.6 (11)91x1.3 (12) X+8.3=10.7 (13) 15x3 (14) 3x816 (15) 3x+9=27(16) 18(x-2)=270 (17) 12x=300-4x (18) 7x+5.3=7.4 (19) 3x5=4.8 (2
2、5) 0.5x+8=43 (26) 6x-3x=18 (27) 7(6.5+x)=87.5(28) 0.273x=0.35 (29) 1.8x=0.972 (30) x0.756=90 (31) 0.1(x+6)=3.30.4 (32) (27.5-3.5)x=4 (33) 9x-40=5 (34) x5+9=21 (35) 48-27+5x=31 (36) 10.5+x+21=56 (37) x+2x+18=78 (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
3、.8 (44) 75.6x=12.6 (45) 5x+12.5=32.3 (46) 5(x+8)=102 (47) x+3x+10=70 (48) 3(x+3)=50-x+3 (49) 5x+15=60 (50) 3.5-5x=2 (51) 0.37+4x=12.5 (52) x1.5-1.25=0.75 (53) 4x-1.36=2.6 (54) 6x+12.8=15.8 (55) 1502+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
4、(62) x+4.8=7.2 (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 (69)42x+25x=134 (70)1.5(x+1.6)=3.6 (71)2(x-3)=5.8 (72)65x+7=137(73) 9x+42.591(74) 4.2 x+2.5x134 (75) 10.5x+6.5x=51 (76) 89x-43x=9.2 (77) 5x-45=100 (78) 1.2x-0.5x=6.3 (79) 23.4=2x(80) 4x-x=4
5、8.6 (81) 4.5x-x=28 (82)X-5.7=2.15 (83)5X-2X=18 (84)3X+0.7=7(85) 3.52= 4.2+x (86) 261.5= 2x+10 (87) 0.516160.2=4x (88) 13 9.25X=0.403 (89) 18.9X=0. 3 (90) 23x=14x27 (91) x14x=75(92)955x80 (93)1.8 +6x54 (94) 6.7x60.36.7 (95) 94x53(96) 2x+8=16 (97) 20x-14x=24 (98) x+7x=8 (99) 9x-3x=6(100) 6x-8=4 (101)
6、5x+x=9 (102) 8x-8=6x (103) x=20 (104) 2x-6=12 (105) 7x+7=14 (106) 6x-6=0 (107) 5x+6=11 (108) 2x-8=10 (109) 2.5x-8=4 (110) x-=7 (111)3x+7=28 (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 (124) 5-8x=4 (125) 7x+8=15 (126) 9-2x=1 (127) 4+5x=9 (128) 10-x=8 (129) 8x+9=17(130) 9+6x=15 (131) x+9x=4+7 (132) 2x+9=17 (133) 8-4x=6 (134) 6x-7=28 (135) 7x-9=20(136) x-56=1 (137) 8-7x=1 (138)x-30=12 (139) 6x-21=21 (140) 6x-3=6 (141) 9x=18 (142) 4x-18=14 (143) 5x+9=11 (144) 17-2x=11 (145)
8、x+4+8=23(146) 7x-12=9(147) X-5.7=2.15(148) 5X-2X=18 (149) 3X +0.5=5 (150) 3.52= 4 x (151) 261.5= 2x (152) 0.516160.1=4x (153) 9.26X=0.402(154) 36.9X=0.3 (155) X0.5=2.6(156) 935x80 (157) 180-6x54 (158) 94x40 (159) 0.2x0.40.53.7 (160) 9.4x0.4x16.2 (161) 924x20 (162) 7x6=1.4(163) 16x34x=1 (164) 18x14x=
9、12 (165) 3 x4214=15 (166) 124x=56 (167) 2214x=12 (168) X+8.3=10.7 (169) 5x 30 (170) x-5.6=9.4 (171) x0.8=90(172) 3x816 (173) 3x+9=27 (174) 5.3+7x=7.4 (175) 3x5=4.8(176) X-0.8X=6 (177) 12x+8x=4.8 (178) 7(x-2)=49 (179) 48+2x=36(180) (x-2)3=7 (181) x5+9=21 (182)(300-x)5=30 (183) 91x 1.3 (184) 41-3x=17
10、五年级解方程180题答案(1)(0.5+x)+x=9.82 0.5+2x=4.9 0.5+2x-0.5=4.9-0.5 2x=4.4 2x2=4.42 X=2.2(2)2(X+X+0.5)=9.8 2x+2x+1=9.8 4x+1-1=9.8-1 4x=8.8 4x4=8.84 X=2.2(3)25000+x=6x 25000+x-x=6x-x 5x=25000 5x5=250005 X=5000(4)3200=440+5X+X 6x+440=32006x+450-450=3200-440 6x=2760 6x6=27606X=460(5)X-0.8X=6 0.2x=6 0.2x0.2=60.
11、2X=30(6)12x-8x=4.8 4x=4.8 4x4=4.84 X=1.2(7) 7.5+2X=15 2x+7.5-7.5=15-7.5 2x=7.5 2x2=7.52 X=3.75(8) 1.2x=81.6 1.2x1.2=81.61.2X=68(9) x+5.6=9.4 X+5.6-5.6=9.4-5.6X=3.8(10)x-0.7x=3.6 0.3x=3.6 0.3x0.3=3.60.3X=12(11)91x1.3 91xx=1.3x 1.3x=911.3x1.3=911.3 X=70(12) X+8.3=10.7 X+8.3-8.3=10.7-8.3 X=2.4 (13) 15x
12、3 15x15=315 X=0.2(14) 3x816 3x-8+8=16+8 3x=24 3x3=243 X=8(15) 3x+9=27 3x+9-9=27-9 3x=18 3x3=183 3x=6(16) 18(x-2)=270 18x-36=270 18x-36+36=270+36 18x=306 18x18=30618 X=17(17) 12x=300-4x 12x+4x=300-4x+4x 16x=300 16x16=30016 X=18.75(18) 7x+5.3=7.4 7x+5.3-5.3=7.4-5.3 7x=2.1 7x7=2.17 X=0.3(19) 3x5=4.8 3x
13、55=4.85 3x=24 3x3=243 X=8(20) 30x+25=85 30x+25-25=85-25 30x=60 30xx=60x 30=60x 60x60=3060 X=0.5(21) 1.48-2x=6 11.2-2x+2x=6+2x 11.2=6+2x 2x+6-6=11.2-6 2x=5.2 2x2=5.22 X=2.6(22) 6x-12.83=0.06 6x-38.4=0.06 6x=38.46 6x6=38.466 X=6.41 (23) 410-3x=170 410-3x+3x=170+3x 170+3x=410 3x+170-170=410-170 3x=240
14、3x3=2403 X=80 (24) 3(x+0.5)=21 3x+1.5=21 3x+1.5-1.5=21-1.5 3x=19.5 3x3=19.53 X=6.5(25) 0.5x+8=43 0.5x+8-8=43-8 0.5x=35 0.5x0.5=350.5 X=70(26) 6x-3x=18 3x=18 3x3=183 X=6(27) 7(6.5+x)=87.5 7x+45.5=87.5 7x+45.5-45.5=87.5-45.5 7x=42 7x7=427 X=6(28) 0.273x=0.35 x=0.2730.35 X=0.78(29) 1.8x=0.972 1.8x1.8=0
15、.9721.8 X=0.54(30) x0.756=90 x0.7560.756=900.756 X=68.04(31) 0.1(x+6)=3.30.4 0.1x+0.6=1.32 0.1x+0.6-0.6=1.32-0.6 0.1x=0.72 0.1x0.1=0.720.1 X=7.2(32) (27.5-3.5)x=4 24x=4 x=244 X=6(33) 9x-40=5 9x-40+40=5+40 9x=45 9x9=459 X=5(34) x5+9=21 x5+9-9=21-9 x5=12 x55=125 X=60(35) 48-27+5x=31 5x+21-21=31-21 5x=
16、10 5x5=105 X=2(36) 10.5+x+21=56 x+31.5-31.5=56-31.5 x=24.5(37) x+2x+18=78 3x+18-18=78-18 3x=60 3x3=603 X=20(38) (200-x)5=30 (200-x)55=305 200-x=150 200-x+x=150+x 150+x=200 X+150-150=200-150 X=50(39) (x-140)70=4 (x-140)7070=470 X-140=280 X-140+140=280+140 X=420 (40) 20-9x=2 9x=20-2 9x=18 9x9=189 X=2(
17、41) x+19.8=25.8 X+19.8-19.8=25.8-19.8 X=6 (42) 5.6x=33.6 5.6x5.6=33.65.6 X=6(43) 9.8-x=3.8 9.8-x+x=3.8+x 3.8+x=9.8 X=9.8-3.8 X=6(44) 75.6x=12.6 X=75.612.6 X=6(45) 5x+12.5=32.3 5x+12.5-12.5=32.3-12.5 5x=19.8 5x5=19.85 X=3.96 (46) 5(x+8)=102 5x+40=102 5x+40-40=102-40 5x=62 5x5=625 X=12.4(47) x+3x+10=7
18、0 4x+10=70 4x+10-10=70-10 4x=60 4x4=604 X=15 (48) 3(x+3)=50-x+3 3x+9=53-x 3x+x+9-9=53-x+x-9 4x=44 4x4=444 X=11(49) 5x+15=60 5x+15-15=60-15 5x=45 5x5=455 X=9(50) 3.5-5x=2 3.5-5x+5x=2+5x 5x+2=3.5 5x+2-2=3.5-2 5x=1.5 5x5=1.55 X=0.3(51) 0.37+4x=12.5 4x+2.1=12.5 4x+2.1-2.1=12.5-2.1 4x=10.4 4x4=10.44 X=2.
19、6 (52) x1.5-1.25=0.75 x1.5-1.25+1.25=0.75+1.25 x1.5=2 x1.51.5=21.5 X=3 (53) 4x-1.36=2.6 4x-1.36+1.36=2.6+1.36 4x=10.4 4x4=10.44 X=2.6 (54) 6x+12.8=15.8 6x+12.8-12.8=15.8-12.8 6x=3 6x6=36 X=0.5(55) 1502+3x=690 3x+300=690 3x+300-300=690-300 3x=390 3x3=3903 X=130 (56) 2x-20=4 2x-20+20=4+20 2x=24 2x2=24
20、2 X=12(57) 3x+6=18 3x+6-6=18-6 3x=12 3x3=123 X=4 (58) 2(2.8+x)=10.4 5.6+2x=10.4 2x+5.6-5.6=10.4-5.6 2x=4.8 2x2=4.82 X=2.4 (59) (x-3)2=7.5 (x-3)22=7.52 X-3=15 X=18(60) 13.2x+9x=33.3 22.2x=33.3 22.2x22.2=33.322.2 X=1.5 (61) 3x=x+100 3x-x=x-x+100 2x=100 2x2=1002 X=50(62) x+4.8=7.2 X=7.2-4.8 X=2.4 (63)
21、6x+18=48 6x+18-18=48-18 6x=30 6x6=306 x=5 (64)3(x+2.1)=10.5 3x+6.3=10.5 3x=10.5-6.3 3x=4.2 3x3=4.23 X=1.4(65)12x-9x=8.7 3x=8.7 3x3=8.73 X=2.9(66)13(x+5)=169 13x+65=169 13x+65-65=169-65 13x=104 13x13=10413 X=8(67) 2x-97=34.2 2x-97+97=34.2+97 2x=131.2 2x2=131.22 X=65.6(68)3.4x-48=26.8 3.4x-48+48=26.8+
22、48 3.4x=74.8 3.4x3.4=74.83.4 X=22(69)42x+25x=134 67x=134 67x67=13467 X=2(70)1.5(x+1.6)=3.6 1.5x+2.4=3.6 1.5x=3.6-2.4 1.5x=1.2 1.5x1.5=1.21.5 X=0.8 (71)2(x-3)=5.8 2x-6=5.8 2x-6+6=5.8+6 2x=11.8 2x2=11.82 X=5.9(72)65x+7=137 65x+7-7=137-7 65x=130 65x65=13065 X=2(73) 9x+42.591 9x+10=91 9x+10-10=91-10 9x=
23、81 9x9=819 X=9(74) 4.2 x+2.5x134 6.7x=134 6.7x6.7=1346.7 X=20(75) 10.5x+6.5x=51 17x=51 17x17=5117 X=3(76) 89x-43x=9.2 46x=9.2 46x46=9.246 X=0.2(77) 5x-45=100 5x-45+45=100+45 5x=145 5x5=1455 X=29(78) 1.2x-0.5x=6.3 0.7x=6.3 0.7x0.7=6.30.7 X=9(79) 23.4=2x 2x2=23.42 X=11.7(80) 4x-x=48.6 3x=48.6 3x3=48.6
24、3 X=16.2(81) 4.5x-x=28 3.5x=28 3.5x3.5=283.5 X=8(82)X-5.7=2.15 X=5.7+2.15 X=7.85(83)5X-2X=18 3x=18 3x3=183 X=6(84)3X+0.7=7 3x+0.7-0.7=7-0.7 3x=6.3 3x3=6.33 X=2.1(85) 3.52= 4.2+x 4.2+x=7 X=7-4.2 X=2.8(86) 261.5= 2x+10 2x+10=39 2x+10-10=39-10 2x=29 2x2=292 X=14.5(87) 0.516160.2=4x 4x=4.8 4x4=4.84 X=1.
25、2(88) 13 9.25X=0.403 X=139.25-0.403 X=138.847(89) 18.9X=0. 3 X=18.90.3 X=63(90) 23x=14x27 23x-14x=14x-14x+27 9x=27 9x9=279 X=3(91) x14x=75 15x=75 15x15=7515 X=5(92)955x80 95-5x+5x=80+5x 5x+80=95 5x+80-80=95-80 5x=15 X=3(93)1.8 +6x54 6x=54-1.8 6x=52.2 6x6=52.26 X=8.7(94) 6.7x60.36.7 6.7x=60.3+6.7 6.7
26、x=67 6.7x6.7=676.7 X=10(95) 94x53 4x=53-9 4x=44 4x4=444 X=11(96) 2x+8=16 2x=16-8 2x=8 2x2=82 X=4(97) 20x-14x=24 6x=24 6x6=246 X=4(98) x+7x=8 8x=8 X=1(99) 9x-3x=6 6x=6 X=1 (100)6x-8=4 6x-8+8=4+8 6x=12 X=2(101) 5x+x=9 6x=9 6x6=96 x=1.5(102) 8x-8=6x 8x-8+8=6x+8 8x-6x=6x-6x+8 2x=8 2x2=82 X=4(103) x=20 x
27、=20 X=25(104) 2x-6=12 2x-6+6=12+6 2x=18 2x2=182 X=9(105) 7x+7=14 7x+7-7=14-7 7x=7 7x7=77 X=1(106) 6x-6=0 6x-6+6=0+6 6x=6 X=1(107) 5x+6=11 5x+6-6=11-6 5x=5 X=1(108) 2x-8=10 2x-8+8=10+8 2x=18 X=9(109) 2.5x-8=4 2.5x-8+8=4+8 2.5x=12 2.5x2.5=122.5 X=4.8(110) x-=7 X-+=7+ X=7.75(111) 3x+7=28 3x+7-7=28-7 3x
28、=21 3x3=213 X=7(112) 3x-7=26 3x-7+7=26+7 3x=33 3x3=333 X=11(113) 9x-x=16 8x=16 8x8=168 X=2(114) 24x+x=5025x=5025x25=5025X=2(115) 1.2x-8=4 1.2x-8+8=4+8 1.2x=12 1.2x1.2=121.2 X=10(116) 3x-8=31 3x-8+8=31+8 3x=39 3x3=393 X=13(117) 6x+6=12 6x+6-6=12-6 6x=6 X=1(118) 3x-3=3 3x-3+3=3+3 3x=6 3x3=63 X=2(119)
29、5x-3x=4 2x=4 2x2=42 X=2(120) 2x+16=19 2x+16-16=19-16 2x=3 2x2=32 X=1.5(121) 5x+8=19 5x+8-8=19-8 5x=11 5x5=115 X=2.2(122) 14-6x=8 14-6x+6x=8+6x 6x+8-8=14-8 6x=6 X=1(123) 15+6x=27 6x+15-15=27-15 6x=12 6x6=126 X=2(124) 5-8x=4 5-8x+8x=4+8x 8x+4-4=5-4 8x=1 8x8=18 X=0.125(125) 7x+8=15 7x+8-8=15-8 7x=7 X=1(126) 9-2x=1 9-2x+2x=1+2x 2x+1-1=9-1 2x=8 2x2=82