(283)六年级解方程专项练习200题(有答案)ok

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1、 第 1 页 共 28 页 六年级解方程专项练习六年级解方程专项练习 200200 题(有答案)题(有答案) (1)x= , (2) x = , (3) 4x= , (4) 82.52x=13.6 (5) 0.78:x=3:5, (6)120%x=0.4, (8) 1(x )=6, (9)2x x=1.2, (10)931.7x=13.4, (11)x25%x=24, (12) x +0.2= , (13)0.6x+90%x=78, (14)20%x2.43=0.8, (15) x x=42, 第 2 页 共 28 页 (16)0.6x+32.5=67.5, (17)1 (x0.45)=5 ,

2、 (18)x2.25=8.25, (19) :x=3:12, (20) x+0.8=5.6, (21) 1.4:x=1:0.75, (22) x(2 )=24, (23) 4x =3 , (24)12x+70.3=20.1, (25) x+ x= , (26)x:42=, (27)0.5+ x=, (28)0.8:=0.48:x, (29) = , 第 3 页 共 28 页 (30)42: =: (31)5x0.4=75%, ( 32) 6x0.9=4.5, (33)2(x3)=5.8, (34) 1.6x=6.4, (35) 4x39=29, (36)16+8x=40, (37) x1.1=

3、3, (38) +2x= , (39)37x=1.04, (40) x1 x=2, (41)x x=14, (42)3x x=, (43)=, (44)1.2: = , (45)=:, (46): =x:0.8, 第 4 页 共 28 页 (47)x= +1, (48)125%X+25%x= +25%x, (49) =, (50) X=, (51) 5:8=x:32, (52)2x+30.9=24.9, (53)5.3x2.9x= , (54) (72.8x)=1.5, (55)x:0.3= : , (56)150%x+66=99 (57)x+60.8x=16 (58) (59) (60)3(

4、X )=1.3 (61) (X+0.5):2 =(X4): , (62) X0.05=3.528, 第 5 页 共 28 页 (63)2X46=80, (64)44.53X=6.38, (65)4X7.2=10, (66)11.5X+X=20, (67)3.812+15X=87.6, (68)6X+5=17, (69)0.6(2.5+X)=4.2, (70) : =X:, (71), (72) (73), (74)4( +x)=, (75) 0.25+ x= , (76)x, (77)200:6=x:, (78)4X= , (79)8(x2)=2(x+7) , 第 6 页 共 28 页 (80

5、):18%=, (81) 2x= , (82) x+ x=46, (83) :x= : , (84)=, (85)5(3x4)2(x1)=5(2x1) (86)= , (87)8(2X7)=5(X+13) , (88)3(x+4.5)=60, (89)1.6x+2.4=7.52, (90)3(x0.8)=6.3, (91)28.45x=5.8, (92)x: = (93) +2x= , (94)x=15%, (95) x x=, 第 7 页 共 28 页 (96)x+50%x=6, (97) :x=0.3:12, (98)4x+2(8x)=26, (99) x =0, (100) + x=1,

6、 (101)x( + )=, (102), (103), (104)x, (105)x, (106)5x+35=650, (107)7203x=80, (108)3.6x0.9x=8.1, (109)44.53x=6, (110)=, (111)631.8X=7.2, 第 8 页 共 28 页 (112)x= , (113)x=42, (114) x+ =, (115)7x3=8.19, (116)12:0.6=x: , (117)3(x+2)=4(x+1) , (118)3x70%x=9.2, (119) 6+ x=240, (120)22.50.4x=12.5, (121)x:3.5=4:

7、2 , (122)x0.8x6=16, (123) : =x:8, (124), (125)x:15= : , (126) x+ x=, (127)x50% x=5, 第 9 页 共 28 页 (128)1 x= , (129)2.5+1 x=3 , (130)3 x2 =4, (131)8.53x=2 , (132)3 x=4, (133) x5%=17.54, (134) : = :(4x) , (135) 6x+31=49, (136) 7x3=8.19, (137) 32.89x=17.5, (138) x0.36x=16, (139) 67+3x=69, (140) 6x+2x56=

8、0, (141) 3x0.454=2.7, (142) 5.8x4.6x=0.96, (143) 8.4(9x)=3, 第 10 页 共 28 页 (144) 3x1.2=8, (145)5x+28=71, (146)8.71.2x=3.9, (147)8x2.6x=37.8, (148)0.75x0.954=8.5, (149)542+3x=72, (150)8x2.6=37.8, (151) x =, (152)x+30%x=26, (153) 7.83x=3.6, (154) 631.8x=7.2, (155)10:x=4.5:0.8, (156) : =x:, (157)X7.65=4

9、.64, (158)28.25X=8.25, (159)X(3.6+2.97)=12.42, (160) x= , (161)14.5=5.5, 第 11 页 共 28 页 (162)x80%x=48, (163)75%x5 =6, (164)x6.8=15.4, (165)1.9x=5.7, (166)4.3yy=4.6, (167)5x+2.6=7.6, (168) x1.5=12.9, (169) 9x+5x=8.4, (170) 6.8+3.2x=14.8, (171)5 x=, (172) x= , (173)4.5 3 x=1.5, (174) (1+25%)x=0.5, (175

10、)x40%x=9, (176)x20%=15.2, (178) xx=, (179) x75%=3, 第 12 页 共 28 页 (180)4x, (181) :x= :4.5, (182) (x4.5)6=12.5, (183)2717x=13.4, (184)9.6+3x=3.245, (185)2x+5=5x7, (186) 3(x2)=25(x2) , (187)4x3(20x)+4=0, (188)=1, (189)4x56=12, (190)8x3x=15.6, (191)30(x4)=60, (192)7.20.53x=1.2, (193)5x2.45=8, (194) + x=

11、 2, (195)5x+2.415=66, 第 13 页 共 28 页 (196)3.2x+2.8x-x=1, (197)2.516-8x=12, (198)9.6-3x=6.3, (199)5(x+6)=75, (200)x0.7+0.93=4, 第 14 页 共 28 页 解方程专项练习解方程专项练习 200200 题题答案:答案: (1)x= , = , , x= ; (2) x = , x= , x21= 21, x=12; (3) 4x= , 4x+4x= +4x, = +4x, 4=4x4, x= (4) 82.52x=13.6 202x=13.6, 13.6+2X=20, 2X=

12、6.4, x=3.2; (5) 0.78:x=3:5, 3x=0.785, 3x=3.9, x=1.3 (6)120%x=0.4, 120%x+20%x=0.4+20%x, 0.4+20%x=1, 0.4+20%x0.4=10.4, 20%x=0.6, 20%x=0.6, x=3; (8) 1(x )=6, 1(x )(x )=6(x ) , 1=6(x ) , 6x6 =1, 6x3=1, 6x=4, 6x6=46, x= (9)2x x=1.2, x(2 )=1.2, x=1.2, x =1.2 , x=1; (10)931.7x=13.4, 271.7x=13.4, 271.7x+1.7

13、x=13.4+1.7x, 13.4+1.7x=27, 13.4+1.7x13.4=2713.4, 1.7x=13.6, 1.7x1.7=13.61.7, x=8 (11)x25%x=24, 75%x=24, 75%x75%=2475%, x=32; (12) x +0.2= , x0.6= , x0.6+0.6= +0.6, x=, x = , x=1 (13)0.6x+90%x=78, 第 15 页 共 28 页 1.5x=78, 1.5x1.5=781.5, x=52; (14)20%x2.43=0.8, 20%x7.2=0.8, 20%x7.2+7.2=0.8+7.2, 20%x20%=

14、820%, x=40; (15) x x=42, x=42, x =42 , x=252 (16)0.6x+32.5=67.5, 0.6x+7.5=67.5, 0.6x+7.57.5=67.57.5, 0.6x=60, 0.6x0.6=600.6, x=100; (17)1 (x0.45)=5 , (x0.45)(x0.45)=(x0.45) , x2.4=1.6, x2.4+2.4=1.6+2.4, x=4, x=4, x= (18)x2.25=8.25, x2.25+2.25=8.25+2.25, x=10.5; (19) :x=3:12, 3x= 12, 3x3=93, x=3 (20)

15、 x+0.8=5.6, x+0.80.8=5.60.8, x=4.8, x =4.8 , x=8 (21) 1.4:x=1:0.75, x=1.40.75, x=1.05 (22) x(2 )=24, x =24, x =24 , x=20; (23) 4x =3 , 4x + =3 + , 4x=4, 4x4=44, x=1 (24)12x+70.3=20.1, 12x+2.1=20.1, 12x+2.12.1=20.12.1, 12x12=1812, x=1.5; (25) x+ x= , x= , x, x= ; (26)x:42=, 10x=42 , 10x10=3010, x=3 (27)0.5+ x=, 第 16 页 共 28 页 0.75+ x=3.75, 0.75+ x0.75=3.750.75, x=3, x =3 , x=6; (28)0.8:=0.48:x, 0.8x=0.48, 0.8x=0.2, 0.8x0.8=0.20.8, x= (29) = , x= , x=, x=3; (30)42: =: x=42 , x=30

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