1樓:匿名使用者
解方程第一題:移項:9x-4x=25.6-9.6.
5x=16
x=16/5
第二題:0.4x-0.2x=2.4-0.6.
0.2x=1.8.
x=9.
第三題:4-1.4(2x-3=-0.5
2.8x=4-4.2-0.5
2.8x=-0.7.
x=7/28.
x=1/4.
簡便計算:
2/0.25-0.25/2=200/25-25/200=200/25[1-(25/200)/(25/200)]
=200/25*(1-1).
=(200/25)*0.
=0.(3.2*0.
6/3.2*0.6)/1.
2=0.6*0.6/1.
2. 【理解原題為:[3.
2*(0.6/3.2)*0.
6]/1.2】
=0.36/1.2.
=36/120.
=3/10.
或:(3.2*0.
6/3.2*0.6)/1.
2=1/1.2 【理解原題為:[(3.
2*0.6)/(3.2*0.
6)]/1.2】
=10/12.
=5/6.
2樓:匿名使用者
第一題9.6-4x=25.6-9x
5x=16
x=3.2
第二題0.6-0.2x=2.4-0.4x
0.2x=1.8
x=9第三題4-1.4(2x-3)=0.52.8x-4.2=3.5
2.8x=7.7
x=2.75
2/0.25-0.25/2
=8-0.125
=7.875
(3.2*0.6/3.2*0.6)/1.2=(0.6*0.6)/1.2
=0.3
解方程: 題1: 0.2(3-x)=0.4(6-x) 題2: 9.6-4x=25.6-9
3樓:尉遲飛路飛
0.6-0.2x=2.4-0.4x
0.2x=1.8
x=99.6-4x=25.6-9x
5x=16
x=3.2
4樓:匿名使用者
題1:0.2(3-x)=0.4(6-x)
0.6-0.2x=0.24-0.4x
-0.2x+0.4x=0.24-0.6
0.2x=-0.36
x=-1.8
題2: 9.6-4x=25.6-9
9.6-4x=16.6
-4x=16.6-9.6
-4x=7
x=-7/4
5樓:專家
解:0.6-0.2x=2.4-0.4x
0.4x-0.2x=2.4-0.6
0.2x=1.8
x=9解:9x-4x=25.6-9.6
5x=16
x=3.2
9點6一4x=25點6一qx解方程
6樓:匿名使用者
9.6-4x=25.6-9x
9x-4x=25.6-9.6
5x=16
x=16/5
x=3.2
7樓:匿名使用者
5×9-4x=25 解:45-4x=25 4x=45-25 4x=20 x=20÷4 x=5
五年級下冊脫式計算 解方程 解決問題20道 30
8樓:遊南珍
99.99-30+99
9樓:新野旁觀者
(13)2x-8=10
(14)1÷2x-8=4
(15)x-5/6=7
(16)3x+7=28
(17)3x-7=26
(18)9x-x=16
(19)24x+x=50
(20)6÷7x-8=4
(30)3x-8=30
(31)6x+6=12
(32)3x-3=1
(33)5x-3x=4
(34)2x+16=19
(35)5x+8=19
(36)14-6x=8
(37)15+6x=27
(38)5-8x=4
(39)7x+8=15
(40)9-2x=1
(41)4+5x=9
(42)10-x=8
(43)8x+9=17
(44)9+6x=14
(45)x+9x=4+7
(46)2x+9=17
(47)8-4x=6
(48)6x-7=12
(49)7x-9=8
(50)x-56=1
(51)8-7x=1
(52)x-30=12
(53)6x-21=21
(54)6x-3=6
(55)9x=18
(56)4x-18=13
(57)5x+9=11
(58)6-2x=11
(59)x+4+8=23
(60)7x-12=8
(61)x-5.7=2.15
(62)15 5x-2x=18
(62)3x 0.7=5
(63)3.5×2= 4.2 x
(64)26×1.5= 2x
(65)0.5×16―16×0.2=4x
(66)9.25-x=0.403
(67)16.9÷x=0. 3
(68)x÷0.5=2.6
(69)x+13=33
(70)3 - 5x=80
(71)1.8- 6x=54
(72)6.7x -60.3=6.7
(73)9 +4x =40
(74)0.2x-0.4+0.5=3.7
(75)9.4x-0.4x=16.2
(76)12 -4x=20
(77)1/3 x+5/6 x=1.4
(78)12 x+34 x=1
(79)18x-14 x= 12
(80)23 x-5×14 = 14
(81)12 +34 x=56
(82)22-14 x= 12
(83)23 x-14 x= 14
(84)x+14 x= 65
(85)23 x=14 x +14
(86)30 x-12 x -14 x=15x-2x=30
89x-43x=9.2
5x-45=100
1.2x-0.5x=6.3
23.4=2x=56
4x-x=48.6
21×(9.3-3.7)-5.6
2.3×16+2.3×23+2.3
46×57+23×86
101×0.87-0.91×87
4.8+8.63+5.2+0.37
2.35+1.713+0.287+7.650.134+2.66+0.866
3.07-0.38-1.62
3.25+1.79-0.59+1.75
3.2+0.36+4.8+1.64
12.7-(3.7+0.84)
7.6×0.8+0.2×7.6
1.28×8.6+0.72×8.6
0.8×(4.3×1.25)
0.86×15.7-0.86×14.7
14-7.32-2.68
(2.5-0.25)×0.4
63.4÷2.5÷0.4
(7.7+1.54)÷0.7
0.35×1.25×2×0.8
4.5÷1.8
3.65×10.1
30.8÷[14-(9.85+1.07)]20×[(2.44-1.8)÷0.4+0.15]777×9+1111×3
31.5×4÷(6+3)
194-64.8÷1.8×0.9
24÷2.4-2.5×0.8
469×12+1492
0.8×[(10-6.76)÷1.2]
18.1×0.92+3.93
0.75×102
30.8÷[14-(9.85+1.07)]20×[(2.44-1.8)÷0.4+0.15]777×9+1111×3
31.5×4÷(6+3)
194-64.8÷1.8×0.9
24÷2.4-2.5×0.8
469×12+1492
0.8×[(10-6.76)÷1.2]
0.4×0.7×0.25
4.07×0.86+9.12.5
0.78+5.436+1
3/7 × 49/9 - 4/3
8/9 × 15/36 + 1/27
12× 5/6 – 2/9 ×3
8× 5/4 + 1/4
6÷ 3/8 – 3/8 ÷6
4/7 × 5/9 + 3/7 × 5/95/2 -( 3/2 + 4/5 )
7/8 + ( 1/8 + 1/9 )
9 × 5/6 + 5/6
3/4 × 8/9 - 1/3
7 × 5/49 + 3/14
6 ×( 1/2 + 2/3 )
8 × 4/5 + 8 × 11/5
31 × 5/6 – 5/6
9/7 - ( 2/7 – 10/21 )5/9 × 18 – 14 × 2/7
4/5 × 25/16 + 2/3 × 3/40.68×1.9+0.32×1.9
5.38+7.85-5.370.456+6.22+3.785.17-1.8-3.2
7.85+2.34-0.85+4.66
9.6+4.8-3.6
13.35-4.68+2.65
0.398+0.36+3.64
0.25×16.2×4
3.72×3.5+6.28×3.5
4.8×7.8+78×0.52
56.5×9.9+56.5
4.2÷3.5
3.52÷2.5÷0.4
9.6÷0.8÷0.4
0.49÷1.4
0.89×100.1
4.36×12.5×8
8.54÷2.5÷0.4
3.14×0.68+31.4×0.032
8.9×1.01
18-1.8÷0.125÷0.8
15.02-6.8-1.02
9.43-(6.28-1.57)
13.7×0.25-3.7÷4
10.7×16.1-15.1×10.7
5.93+0.19+2.81
1.57+0.245+7.43
1.27+3.9+0.73+16.1
1.29+3.7+2.71+6.3
23.4-0.8-13.4-7.2
1.23+3.4-0.23+6.6
36.54-1.76-4.54
0.85×199
12.5×0.96×0.8
3.12+3.12×99
2.4×102
2.64+8.67+7.36+11.33
9.16×1.5-0.5×9.16
4.9÷1.4
2.5×2.4
32.4×0.9+0.1×32.4
4.2÷3.5
15÷(0.15×0.4)
[60-(9.5+28.9)]÷0.18
28-(3.4+1.25×2.4)
0.8×〔15.5-(3.21+5.79)〕0.64×25×7.8+2.2
36.72÷4.25×9.9
(4121+2389)÷7
405×(3213-3189)
19.4×6.1×2.3
0.0430.24+0.875
100-56.23
[60-(9.5+28.9)]÷0.18
28-(3.4+1.25×2.4)
0.8×〔15.5-(3.21+5.79)〕0.64×25×7.8+2.2
36.72÷4.25×9.9
(4121+2389)÷7
405×(3213-3189)
19.4×6.1×2.3
0.75×102
18.1×0.92+3.93
4.07×0.86+9.12
14 × 8/7 – 5/6 × 12/1517/32 – 3/4 × 9/24
3 × 2/9 + 1/3
5/7 × 3/25 + 3/7
3/14 ×2/3 + 1/6
1/5 × 2/3 + 5/6
9/22 + 1/11 ÷ 1/2
5/3 × 11/5 + 4/3
45 × 2/3 + 1/3 × 15
7/19 + 12/19 × 5/6
1/4 + 3/4 ÷ 2/3
8/7 × 21/16 + 1/2
101 × 1/5 – 1/5 × 21
50+160÷40
120-144÷18+35
347+45×2-4160÷52
(58+37)÷(64-9×5)
6-1.19×3-0.4315.89+(6.75-5.89)13.75-(3.75+6.48)
35.6-1.8-15.6-7.2
7.14-0.53-2.47
73.8-1.64-13.8-5.36
15.75+3.59-0.59+14.25(1.25-0.125)×8
36.8-3.9-6.1
32+4.9-0.9
7.09×10.8-0.8×7.09
320÷1.25÷8
3.9-4.1+6.1-5.9
4.2×99+4.2
1.25×2.5×32
146.5-(23+46.5)
9.7×99+9.7
0.65×101
5.6÷1.25÷0.8÷2.5÷0.4
7.74×(2.8-1.3)+1.5×2.2612.7×9.9+1.27
5.4×11-5.4
3.65×4.7-36.5×0.37
2.22×9.9+6.66×6.7
0.79×199
1.76+0.195+3.24
6.02+3.6+1.98
7.5+4.9-6.5
8-2.45-1.55
0.32×403
0.25×36
0.25×0.73×4
0.25×8.5×4
10.4-9.6×0.35
28.6×101-28.6
2.31×1.2×0.5
70÷28
3.6-3.6×0.5
3.9÷(1.3×5)
2.7÷45
15÷0.25
930÷0.6÷5
3.2×0.25×12.5
2.881÷0.43-0.24×3.5
2.55×7.1+2.45×7.1
(31.8+3.2×4)÷5
2÷2.5+2.5÷2
5180-705×6
671×15-974
3.416÷(0.016×35)
5.67×0.2-0.62
0.4×0.7×0.25
0.78+5.436+1
2.881÷0.43-0.24×3.5
2.55×7.1+2.45×7.1
(31.8+3.2×4)÷5
2÷2.5+2.5÷2
5180-705×6
671×15-974
3.416÷(0.016×35)
5.67×0.2-0.62
100-56.23
0.0430.24+0.875
95÷(64-45)
178-145÷5×6+42
812-700÷(9+31×11)
85+14×(14+208÷26)
(284+16)×(512-8208÷18)120-36×4÷18+35
(58+37)÷(64-9×5)
(6.8-6.8×0.55)÷8.5
0.12× 4.8÷0.12×4.8
(3.2×1.5+2.5)÷1.6
6-1.6÷4
7.2÷0.8-1.2×5
6.5×(4.8-1.2×4)
10.15-10.75×0.4-5.7
5.8×(3.87-0.13)+4.2×3.7432.52-(6+9.728÷3.2)×2.5(136+64)×(65-345÷23)
420+580-64×21÷28
(58+370)÷(64-45)
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