六年级解方程专项练习200题ok(共28页).doc
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六年级解方程专项练习200题ok(共28页).doc
精选优质文档-倾情为你奉上 专心-专注-专业六年级解方程专项练习200题(有答案)(1)x=, (2) x××=, (3) 4x=,(4) 8×2.52x=13.6 (5) 0.78:x=3:5, (6)120%x=0.4, (8) 1÷(x)=6,(9)2xx=1.2, (10)9×31.7x=13.4, (11)x25%x=24, (12)x+0.2=,(13)0.6x+90%x=78, (14)20%x2.4×3=0.8, (15)xx=42, (16)0.6x+3×2.5=67.5, (17)1÷(x0.45)=5,(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+7×0.3=20.1, (25)x+x=, (26)x:42=, (27)×0.5+x=, (28)0.8:=0.48:x, (29)=, (30)42:=:(31)5x0.4=75%,( 32) 6x0.9=4.5, (33)2(x3)=5.8,(34) 1.6x=6.4,(35) 4x3×9=29, (36)16+8x=40,(37) x÷1.1=3,(38)+2x=,(39)×37x=1.04, (40)x1x=2, (41)xx=14,(42)3xx=,(43)=, (44)1.2:=,(45)=:,(46):=x:0.8,(47)x=+1,(48)125%X+25%x=+25%x,(49)=, (50)×X=,(51) 5:8=x:32, (52)2x+3×0.9=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÷(X)=1.3(61)(X+0.5):2=(X4):,(62) X÷0.05=3.528,(63)2X4×6=80, (64)4×4.53X=6.38, (65)4X7.2=10,(66)11.5X+X=20, (67)3.8×12+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)4÷X=, (79)8(x2)=2(x+7), (80):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)xx=,(96)x+50%x=6, (97):x=0.3:12, (98)4x+2(8x)=26, (99)x=0,(100)+x=1,(101)x×(+)=,(102),(103), (104)x,(105)x×,(106)5x+35=650, (107)720÷3x=80,(108)3.6x0.9x=8.1, (109)4×4.53x=6, (110)=, (111)6×31.8X=7.2, (112)÷x=, (113)x÷=42, (114)x+=,(115)7x÷3=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=4:2, (122)x0.8x6=16, (123):=x:8,(124), (125)x:15=:,(126)x+x=,(127)x×50%x=5, (128)1x=, (129)2.5+1x=3, (130)3x2=4,(131)8.53x=2, (132)3÷x=4, (133)x5%=17.54,(134):=:(4x), (135) 6x+31=49, (136) 7x÷3=8.19,(137) 32.89x=17.5, (138) x0.36x=16,(139) 6×7+3x=69, (140) 6x+2x56=0,(141) 3x0.45×4=2.7, (142) 5.8x4.6x=0.96, (143) 8.4÷(9x)=3, (144) 3x÷1.2=8, (145)5x+28=71, (146)8.71.2x=3.9,(147)8x2.6x=37.8, (148)0.75x0.95×4=8.5, (149)54÷2+3x=72, (150)8x2.6=37.8,(151)x÷=,(152)x+30%x=26, (153) 7.83x=3.6, (154) 6×31.8x=7.2, (155)10:x=4.5:0.8, (156):=x:, (157)X7.65=4.64,(158)28.25X=8.25, (159)X(3.6+2.97)=12.42, (160)÷x=, (161)14.5=5.5,(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)4.5×3x=1.5, (174)(1+25%)x=0.5, (175)x40%x=9, (176)x×20%=15.2,(178)xx=, (179)x÷75%=3,(180)4x, (181):x=:4.5, (182)(x4.5)×6=12.5, (183)2717x=13.4, (184)9.6+3x=3.24×5,(185)2x+5=5x7, (186) 3(x2)=25(x2), (187)4x3(20x)+4=0, (188)=1,(189)4x5×6=12, (190)8x3x=15.6, (191)30×(x÷4)=60,(192)7.2×0.53x=1.2, (193)5x2.4×5=8, (194)+x=×2,(195)5x+2.4×15=66, (196)3.2x+2.8x-x=1, (197)2.5×16-8x=12, (198)9.6-3x=6.3, (199)5(x+6)=75,(200)x÷0.7+0.9×3=4, 解方程专项练习200题答案:(1)x=, =, , x=; (2) x××=, x=, x×21=×21, x=12; (3) 4x=,4x+4x=+4x,=+4x, ÷4=4x÷4, x=(4) 8×2.52x=13.6 202x=13.6, 13.6+2X=20, 2X=6.4, x=3.2;(5) 0.78:x=3:5, 3x=0.78×5, 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, 6x÷6=4÷6, x=(9)2xx=1.2, x(2)=1.2, x=1.2, x÷=1.2÷, x=1;(10)9×31.7x=13.4, 271.7x=13.4, 271.7x+1.7x=13.4+1.7x, 13.4+1.7x=27,13.4+1.7x13.4=2713.4, 1.7x=13.6, 1.7x÷1.7=13.6÷1.7, x=8(11)x25%x=24, 75%x=24, 75%x÷75%=24÷75%, x=32;(12)x+0.2=,x0.6=,x0.6+0.6=+0.6,x=,x÷=÷, x=1(13)0.6x+90%x=78, 1.5x=78, 1.5x÷1.5=78÷1.5, x=52; (14)20%x2.4×3=0.8, 20%x7.2=0.8, 20%x7.2+7.2=0.8+7.2, 20%x÷20%=8÷20%, x=40;(15)xx=42, x=42, x÷=42÷, x=252(16)0.6x+3×2.5=67.5, 0.6x+7.5=67.5, 0.6x+7.57.5=67.57.5, 0.6x=60, 0.6x÷0.6=60÷0.6, 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, 3x÷3=9÷3, x=3(20)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=1.4×0.75, x=1.05 (22) x×(2)=24, x×=24, x×÷=24÷, x=20;(23) 4x=3,4x+=3+, 4x=4, 4x÷4=4÷4, x=1(24)12x+7×0.3=20.1, 12x+2.1=20.1, 12x+2.12.1=20.12.1, 12x÷12=18÷12, x=1.5;(25)x+x=, x=, x×, x=;(26)x:42=, 10x=42×, 10x÷10=30÷10, x=3(27)×0.5+x=, 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, 0.8x÷0.8=0.2÷0.8, x=(29)=, x=, x=, x=3;(30)42:=:x=42×,x=30, x=50;(31)5x0.4=75%, 5x0.4+0.4=75%+0.4, 5x÷5=1.15÷5, x=0.23( 32) 6x0.9=4.5, 6x0.9+0.9=4.5+0.9, 6x=5.4, 6x÷6=5.4÷6, x=0.9;(33)2(x3)=5.8,2(x3)÷2=5.8÷2 x3=2.9, x3+3=2.9+3, x=5.9;(34) 1.6x=6.4,1.6x÷1.6=6.4÷1.6, x=4;(35) 4x3×9=29, 4x27=29, 4x27+27=29+27, 4x=56, 4x÷4=56÷4, x=14;(36)16+8x=40,16+8x16=4016, 8x=24, 8x÷8=24÷8, x=3;(37) x÷1.1=3,x÷1.1×1.1=3×1.1, x=3.3(38)+2x=,+2x=, 2x=, 2x÷2=÷2, x=;(39)×37x=1.04, 2.167x=1.04, 2.167x1.04=1.041.04, 1.127x=0, 7x÷7=1.12÷7, x=0.16;(40)x1x=2, x1=2, x1+1=2+1, x=3, x=3, x=18;(41)xx=14,x=14,x=14, x=18;(42)3xx=,x=,x=, x=;(43)=, 2.4x=72×0.26, 2.4x=18.72,2.4x÷2.4=18.72÷2.4, x=7.8;(44)1.2:=,x=1.2×5,x=6,x=6, x=9;(45)=:,x=18×,x=,x=, x=12;(46):=x:0.8,x=×0.8,x=0.04, x=0.2;(47)x=+1, x×=×, x=1(48) 125%X+25%x=+25%x,0.25x+0.250.25=10.25, 0.25x=0.75, x=3;(49)=, 0.25x=1.25×1.6,0.25x÷0.25=1.25×1.6÷0.25, x=8;(50)×X=,×X÷=, x=;(51) 5:8=x:32, 8x=5×32,8x÷8=5×32÷8, x=20(52)2x+3×0.9=24.9, 2x+2.7=24.9, 2x+2.72.7=24.92.7, 2x÷2=22.2÷2, x=11.1;(53)5.3x2.9x=, 2.4x=, 2.4x÷2.4=÷2.4, x=;(54)×(72.8x)=1.5,×(72.8x)=1.5, 72.8x=2.1, 72.8x+2.8x=2.1+2.8x, 72.1=2.1+2.8x2.1, 4.9÷2.8=2.8x÷2.8, x=1.75;(55)x:0.3=:,x=0.3×,x=, x=(56)150%x+66=99 1.5x+66=99 1.5x=33 x=22(57)x+60.8x=16 0.2x+6=16 0.2x=10 x=50(58) x=14.4(59) 0.55x=5.5 x=10(60)3÷(X)=1.33÷(X)×(x)=1.3×(x), 3=1.3x0.78, 3+0.78=1.3x0.78+0.78, 4.68=1.3x, 4.68÷1.3=1.3x÷1.3, x=3.6;(61)(X+0.5):2=(X4):,×(x4)=(x+0.5)×,x×4=x+×0.5,x10x=x+x, 2.25x10+10=0.125+10, 2.25x÷2.25=10.125÷2.25, x=4.5(62) X÷0.05=3.528,X÷0.05×0.05=3.528×0.05, X=0.1764;(63)2X4×6=80, 2X24=80, 2X24+24=80+24, 2X=104, 2X÷2=104÷2, X=52;(64)4×4.53X=6.38, 183X=6.38, 183X+3X=6.38+3X, 6.38+3X=18,6.38+3X6.38=186.38, 3X=11.62, 3X÷3=11.62÷3, X=;(65)4X7.2=10,4X7.2+7.2=10+7.2, 4X=17.2, 4X÷4=17.2÷4, X=4.3;(66)11.5X+X=20, 12.5X=20,12.5X÷12.5=20÷12.5, X=1.6;(67)3.8×12+15X=87.6, 45.6+15X=87.6,45.6+15X45.6=87.645.6, 15X=42, 15X÷15=42÷15, X=2.8(68)6X+5=17, 6x+55=175, 6x÷6=12÷6, x=2;(69)0.6×(2.5+X)=4.2,0.6×(2.5+X)÷0.6=4.2÷0.6, 2.5+x=7, 2.5+x2.5=72.5, x=4.5;(70):=X:, x=×, x÷=, x=0.6(71), , ;(72),;(73), , (74)4(+x)=,+4x=,+4x=, 4x=4, x=1;(75)×0.25+x=, 0.2+x=, 0.2+x0.2=0.2, x=, x=(76)x, , , x=;(77)200:6=x:, 6x=200×, 6x÷6=480÷6, x=80(78)4÷X=, 4÷X×X=X, X=4, X÷=4÷, X=10;(79)8(x2)=2(x+7), 8X16=2X+14, 6X16=14, 6X=30, X=5;(80):18%=, X=0.18×6.5, X=1.17, X=7.8(81)2x=, 2x+2x=+2x, +2x=, +2x=, 2x=, 2x÷2=÷2, x=;(82)x+x=46, x(+)=46, x=46, x÷=46÷, x=40;(83):x=:, x=×, x=, x÷=÷, x=;(84)=, 1.6x=6.4×2, 1.6x=12.8,1.6x÷1.6=12.8÷1.6, x=8(85)5(3x4)2(x1)=5(2x1) 15x202x+2=10x5, 13x18=10x5, 13x1810x=10x510x, 3x18=5, 3x18+18=5+18, 3x=13, 3x÷3=13÷3, x=;(86)=, 3(6x1)=64, 18x3=64, 18x3+3=64+3, 18x=67, 18x÷18=67÷18, x=(87)8(2X7)=5(X+13), 16x56=5x+65, 16x565x=5x+655x, 11x56=65, 11x56+56=65+56, 11x=121, 11x÷11=121÷11, x=11,(88)3(x+4.5)=60, 3(x+4.5)÷3=60÷3, x+4.5=20, x+4.54.5=204.5, x=15.5(89)1.6x+2.4=7.52, 1.6x+2.42.4=7.522.4, 1.6x=5.12, 1.6x÷1.6=5.12÷1.6, x=3.2;(90)3(x0.8)=6.3, 3x2.4=6.3, 3x2.4+2.4=6.3+2.4, 3x=8.7, 3x÷3=8.7÷3, x=2.9;(91)28.45x=5.8, 28.45x+5x=5.8+5x, 5.8+5x=28.4, 5.8+5x5.8=28.45.8, 5x=22.6, 5x÷5=22.6÷5, x=4.52(92)x:= 25x=×3, 25x=, 25x÷25=, x=;(93)+2x=,+2x=, 2x=0, x=0;(94)x=15%,x×x=15%x, 0.15x=0.15,0.15x÷0.15=0.15÷0.15, x=1;(95)xx=,x=,x=, x=(96)x+50%x=6, 1.5x=6, 1.5x÷1.5=6÷1.5, x=4;(97):x=0.3:12, 0.3x=, 0.3x÷0.3=9÷0.3, x=30;(98)4x+2(8x)=26, 4x+162x=26, 2x+16=26, 2x+1616=2616, 2x÷2=10÷2, x=5(99)x=0,x+=0+,x=,x×3=×3, x=;(100)+x=1,+x=1,x=,x×=×, x=1;(101)x×(+)=,x=,x×=×, x=(102), 3x÷3=, x=;(103), , x=20;(104)x, x=;(105)x×,x×, x=(106)5x+35=650, 5x+3535=65035, 5x=615, 5x÷5=615÷5, x=123;(107)720÷3x=80, 720÷3x×3x=80×3x, 240x=720, 240x÷240=720÷240, x=3;(108)3.6x0.9x=8.1, (3.60.9)x=8.1, 2.7x=8.1, 2.7x÷2.7=8.1÷2.7, x=3;(109)4×4.53x=6, 183x=6, 183x+3x=6+3x, 6+3x=18, 6+3x6=186,