范文一:五年级竖式计算
一、列竖式计算
(1)0.26×7 (2)3.105×18 (3) 63.08×25 (4)11.4×19 (5)1.59×4 (6) 4.3×2.8
(7) 0.08×125 (8)24×0.5 (9)25×0.125 (10) 4.87×100 (11)28×1.5 (12)0.82×2.3
(13) 3.95×42 (14)2.073×15 (15)3.7×2.5 (16)79×0.236 (17)1.8×3.08 (18)19.5×2.6
(19)0.36×560 (20)3.77×1.8 (21)5.22×0.3 (22)4.67×0.9 (23) 5.6×6.5 (24)4.88×2.9
(25)5.61×2.1 (26)8.9×2.4 (27)4.268×1.7 (28)8.78×83 (29) 9.246×2.85 (30)7.658×85
(31)36.02×0.3 (32) 5.61×4.3 (33) 27.5×5.7 (34) 2.5×0.88 (35)3.77×1.8 (36) 9.77×2.4
(37) 0.072×0.15 (38)0.18×8.45 (39) 0.39×2.9 (40) 0.082×0.14
二、简便方法计算
(1)4.56×0.4×2.5 (2)12.5×2.7×0.8 (3)12.5×3.2×0.25 (4)2.5×3.2 (5)12.5×56
(6)25×0.36 (7)12.5×8.8 (8)99×0.35 (9)3.7×1.8-2.7×1.8 (10)1.08×9+1.08
(11)0.25×48 (12) 95.7×0.28+6.3×0.28-0.28×2 (13)12.5×88 (14)9.16×1.53-0.53×9.16
(15)5×6.03×0.2 (16)32×1.25 (17)0.45×99 (18)53×10.1 (19)4.2×6.51+3.49×4.2
(20)2.5×0.8×0.4×1.25
一、列竖式计算
(1)0.26×7 (2)3.105×18 (3) 63.08×25 (4)11.4×19 (5)1.59×4 (6) 4.3×2.8
(7) 0.08×125 (8)24×0.5 (9)25×0.125 (10) 4.87×100 (11)28×1.5 (12)0.82×2.3
(13) 3.95×42 (14)2.073×15 (15)3.7×2.5 (16)79×0.236 (17)1.8×3.08 (18)19.5×2.6
(19)0.36×560 (20)3.77×1.8 (21)5.22×0.3 (22)4.67×0.9 (23) 5.6×6.5 (24)4.88×2.9
(25)5.61×2.1 (26)8.9×2.4 (27)4.268×1.7 (28)8.78×83 (29) 9.246×2.85 (30)7.658×85
(31)36.02×0.3 (32) 5.61×4.3 (33) 27.5×5.7 (34) 2.5×0.88 (35)3.77×1.8 (36) 9.77×2.4
(37) 0.072×0.15 (38)0.18×8.45 (39) 0.39×2.9 (40) 0.082×0.14
二、简便方法计算
(1)4.56×0.4×2.5 (2)12.5×2.7×0.8 (3)12.5×3.2×0.25 (4)2.5×3.2 (5)12.5×56
(6)25×0.36 (7)12.5×8.8 (8)99×0.35 (9)3.7×1.8-2.7×1.8 (10)1.08×9+1.08
(11)0.25×48 (12) 95.7×0.28+6.3×0.28-0.28×2 (13)12.5×88 (14)9.16×1.53-0.53×9.16
(15)5×6.03×0.2 (16)32×1.25 (17)0.45×99 (18)53×10.1 (19)4.2×6.51+3.49×4.2
(20)2.5×0.8×0.4×1.25
一、列竖式计算
(1)0.26×7 (2)3.105×18 (3) 63.08×25 (4)11.4×19 (5)1.59×4 (6) 4.3×2.8
(7) 0.08×125 (8)24×0.5 (9)25×0.125 (10) 4.87×100 (11)28×1.5 (12)0.82×2.3
(13) 3.95×42 (14)2.073×15 (15)3.7×2.5 (16)79×0.236 (17)1.8×3.08 (18)19.5×2.6
(19)0.36×560 (20)3.77×1.8 (21)5.22×0.3 (22)4.67×0.9 (23) 5.6×6.5 (24)4.88×2.9
(25)5.61×2.1 (26)8.9×2.4 (27)4.268×1.7 (28)8.78×83 (29) 9.246×2.85 (30)7.658×85
(31)36.02×0.3 (32) 5.61×4.3 (33) 27.5×5.7 (34) 2.5×0.88 (35)3.77×1.8 (36) 9.77×2.4
(37) 0.072×0.15 (38)0.18×8.45 (39) 0.39×2.9 (40) 0.082×0.14
二、简便方法计算
(1)4.56×0.4×2.5 (2)12.5×2.7×0.8 (3)12.5×3.2×0.25 (4)2.5×3.2 (5)12.5×56
(6)25×0.36 (7)12.5×8.8 (8)99×0.35 (9)3.7×1.8-2.7×1.8 (10)1.08×9+1.08
(11)0.25×48 (12) 95.7×0.28+6.3×0.28-0.28×2 (13)12.5×88 (14)9.16×1.53-0.53×9.16
(15)5×6.03×0.2 (16)32×1.25 (17)0.45×99 (18)53×10.1 (19)4.2×6.51+3.49×4.2
(20)2.5×0.8×0.4×1.25
范文二:五年级竖式计算
计算练习(竖式练习) 姓名
2.7+3.13
25÷0.38 4÷1.2 0.56÷1.4 30÷74 96÷15 (精确到百分位) (保留两位小数) 78.92+115.8 3—2.08 141.2-48.98 3.25×8
(验算)
16.32÷51
13÷2.4 (
7.2÷0.48
40.5÷18 (验算)
8.9×0.36 (验算) (
5.85÷0.015
9÷36 58.89÷13 7.218÷36 32÷0.016 179.2÷64 5.06×13 40.4÷8 0.448÷0.28 验算) 5.93×0.76 (保留三位小数)
7.45÷3.8 181.21×18 验算) 3.52÷5.5 1.7÷11 (精确到十分位) 4.4÷50 7.2÷5 -5.29 0.73+12 9.6÷1.6 0.957÷4.65 4.7×0.23 7.2×6.25 0.945÷0.035
2.1÷0.25 75.6÷18
50.34÷14 96÷0.64
0.832÷0.26 28×2.05 0.43÷8.6 3.85×0.014
8.68÷6.2 3.952÷0.76 50÷0.25 64.8÷24
6.5×0.48 1.872÷2.4 0.465÷15 9.72÷0.027 50.4÷48
4.95÷3.3
20-5.674 90 64.8÷19
7.04÷4.07
0.26÷4.5
4.75÷0.05 18.27÷2.1
-16.75 3.56+7.5 15.3-6.09 7.4+12.86 179.2÷64 3.52÷55 4.32÷3.6 8.32×2.5 3.54×13 5.84÷0.16 2.03×4.7 6.48÷0.8 0.282÷4.7 0.69×8.4 40÷0.32 0.36×0.24 5.4÷0.036 8.62÷0.43 97.2÷0.18 179.2÷64 1.9×2.08 2.4×1.02 32.9÷9.4
范文三:五年级上册竖式计算
1、竖式计算。
170×2.05= 8.84÷1.7= 21÷1.4= 12.5+0.25=
2、竖式计算。(得数保留两位小数)
42.3×0.78 1.43×0.67 5.87÷1.9 7.9÷0.35
3、解方程。
5X+7=42 16+8X=40 4X—3×9=29
2(X—2.6)=8 5(X+1.5)=17.5 (X—3)÷2=7.5
5.4X+X=12.8 X—0.36X=16 3.6X—X=3.25
4、简算。 xkb1.com
3.8+4.29+2.71+6.2 12.5—0.78—3.22 12.8×99+12.8
1.25×3.2×2.5 12.6×101—12.6 38.5÷2.5÷0.4
6.7×10.1 6.5×101 4.85×98
1.2×2.5+0.8×2.5 28×17.5—28×7.5 4.8×12.5
5、递等式计算。
7.8+3.2÷2.5 5.83×2+4.27 0.75×18÷0.15
9.2-1.2÷0.6 (2.4×5.5+17.3)÷6.1 3.64÷0.35+0.65
七,解决问题(30分,每小题5分)
1、王老师买了36支铅笔,48本练习本奖励给一些进步的学生,刚刚派完,
没有剩余,一个有多少个进步的学生?
2、 一个正方体玻璃鱼缸,从里面量,2 dm,,高15cm,倒入5.5升的水,
水溢出了多少立方分米?
3、一个正方体玻璃杯,棱长8cm,在里面装入320毫升水,把一个苹果放入水中 (苹果被水完全浸没)。水面上升的2cm,这个苹果的体积是多少立厘米?
5、一个长方体鱼缸,长1.2米,宽0.4米,高0.8米。
(1)这个鱼缸能装水多少升? (2)制作这个鱼缸至少要多少玻璃?(无盖)
6、一篮桃子,每袋装6个刚好装完,每袋装8个也刚好装完。这一篮桃子至少有多少个?
7、将三个棱长都是4分米的正方体粘成一个长方体。长方体的体积和表面积各是多少?
8.五年级有6个班,学校买来40扫把,要平均分给他们,够分吗?至少需要再买几把才能正好分完?(4分)
9.一根长120厘米的铁丝,做一个长12厘米、宽10厘米、高6厘米的长方体框架,够用吗?(4分)
10.某家具厂要订购600根同样的方木,每根方木横截面的面积是25dm2,长是2m,这些方木一共有多少立方米?(5分)
11.公园南面要修一道长30米,宽0.24米,高5米的围墙。如果每立方米用砖500块,共需要多少块砖?(5分)
12. 把一个棱长是6分米的正方体钢材铸造成一个长9分米、宽6分米的的长方体,它的高是多少分米 ?(5分)
13.一个正方体金鱼缸的棱长是2dm,鱼缸内装有5L水,把一块珊瑚石放入水中,这时量得鱼缸内水深15 cm。这块珊瑚石的体积是多少?(5分)
范文四:小学五年级竖式计算
1、直接写出得数
1.8×0.5= 0.8×12.5= 0.83÷0.1=
7-0.76= 4.5÷1.5= 1.54+0.7= 0.6×7= 2.6÷20= 10÷2.5=
2、用竖式计算下面各题(除不尽的商保留两位小数)
2.3÷0.46 0.86×40.5 2.08×7.5 270.6÷1.5
3、用简便方法计算:
1.2×0.25+2.8×0.25 0.65×104 3.2×1.25×2.5
1.25×8.08 16.8÷40÷0.25
七、应用题
1、 一颗人造地球卫星每分钟大约飞行499.2千米,1.5小时能飞行多少千米?
2、用91.2千克花生可以榨出30千克花生油。现在要榨500千克花生油,需
要多少千克花生?
范文五:五年级小数竖式计算
68.8?4, 85.44?16, 67.5?15, 289.9?18,
101.7?9, 243.2?64, 16.8?28, 15.6?24,
0.138?15,
91.2?3.8,
210?1.4,
1.35?27, 0.756?0.18, 2.688?0.56, 0.416?32, 51.3?0.27, 10.625?25, 1
3.64?52, 26?0.13, 126?45,
10?25, 2.7?7.5, 15?0.06, 25.6?0.032,
14.36?2.7? 8.33?6.2? 1.7?0.03? 32?42?
1.25?1.2?
2.5×3.6=
2.36×0.22=
1
2.41?0.7? 19.8?3.3= 2.8×4.58= 4.5×0.07= 5?0.25= 3.57?4.2= 2
6.3?0.09= 0.76?0.4= 82.8?36=
45×2.46= 3.6?0.24= 382.5?45= 6.4×5.48=
13.42×4.73 =
2.14×8.3 =
29.13×3.14 =
6?1.2 =
9.65×8.12 = 4.9×1.12 = 9.88×11.21 = 3.2?8 = 7.23×1.2 = 21.98×2.31 = 5.5?11 = 7.2?0.9 = 3
6.3×12 = 0.24×28.37 = 7.5?0.5 = 24?1.2 =
12?0.12 = 6.75?0.25 = 12?0.75 = 21?0.7 =
16.9?0.13=
0.3?0.15=
0.1×0.01=
4.692?2.3=
2
1.55?3.9= 0.5×0.12= 0.35×8= 5.5×2.02=
3.7×0.016= 0.6×3?0.6×3= 7.35?7= 3.14×0.68= 4
5.63?6.1= 1.4×5= 1?0.01= 3.07×1.5=
5.26?1.6 = 0.85×6.3 = 52.6×0.252=
35?73 =
4、判断。
(1)如果两个因数的积不是小数,那么这两个因数一定不
是小数。( ) (2)一个不等于0的数的1.02倍一定比原
数大。 ( ) (3)因为12×35=420,所以1.2×3.5=42.
( ) (4)在表示近似数时,5.0也可以写成5。( )
(5)整数乘法的交换律、结合律和分配律,对于小数乘法
同样适用。( ) (6)0.25×9.9=0.25×(10-1)=0.25×10-0.25。
( ) (7)4.10与4.1大小相等,表示意义也相同。( )
(8)3.994精确到百分位约是4.00.( )
(9)一个数(0除外)除以小数,商一定比这个数大。( )
(10)两个数相除的商是0.9,被除数不变,除数扩大10
倍,商是9.( ) 5、把下列各式中的乘积点上小数点,
使等式成立。 9.36×2.7=25272 0.89×6.43=57227 52.1×1.98=103158
3
26.15×3.4=8891
4.5×0.07= 6.3?0.09= 2.5×3.6= 19.8?3.3=
5
5?0.25= 0.76?0.4= 2.36×0.22= 2.8×4.58=
3.57?4.2= 82.8?36= 45×2.46= 3.6?0.24=
382.5?45=
7.23×1.2 =
21.98×2.31 =
6.4×5.48= 6.3×12 = 0.24×28.37 = 13.42×4.73 = 2.14×8.3 = 29.13×3.14 = 6
9.65×8.12 =\ 4.9×1.12 = 9.88×11.21 =
920?40= 780?60= 960?40= 79×97=
28×32,
46×58=
4
32×69=
12.6 ? 0.28
54×25 , 326×52= 0.828 ? 36 8.61 ? 2.1 48×61, 45×12, 97.2 ? 24
58.75 ? 0.25 7
23×37= 33×12= 7.65 ? 0.85 220.3 ? 0.7
58.8 ? 0.28 58.9 ? 31 7.67 ? 5.9 83.2 ? 3.2
97.2 ? 5.4
7.65?25
140.7?3 8
2.898?0.18=
8.4?24 0.98?35 2.8?72 85.44?16 18?48 2.525?25 1.56?2.4= 42.84?7 8
23?184 84?56 0.015= 101.7?9 1.44?
67.5?15 230.4?6 21.24?36 0.736?23
43.5?12
5
85.44?16
230.4?6
35.21?7 42.84?7 21.24?36 39.6?24 101.7?9 0.736?23 9
6.21?0.03 67.5?15 43.5?12
35.21?7 39.6?24 6.21?0.03
210?1.4
51.3?0.27 91.2?3.8 0.756?0.18 0.66?0.3
11.97?1.5
0.828 ? 36
8.61 ? 2.1
69.6?2.9 97.2 ? 24 58.75 ? 0.25 38.4?0.8 7.65 ? 0.85 220.3 ? 0.7 10
15?0.06 12.6 ? 0.28 58.8 ? 0.28
58.9 ? 31 7.67 ? 5.9 83.2 ? 3.2
97.2 ? 5.4
8.4?24
0.98?35
1.56?2.4=
6
42.84?7
48 2.525?25 84?56 1.44?0.015= 101.7?9 11
23?184 140.7?3
2.898?0.18= 67.5?15 7.65?25 82.8?72 85.44?16 230.4?6 18?
21.24?36 0.736?23 43.5?12 35.21?7
39.6?24
101.7?9
0.736?23
6.21?0.03 6.21?0.03 67.5?15 43.5?12 210?1.4 85.44?16 230.4?6 35.21?7 51.3?0.27 12
42.84?7 21.24?36 39.6?24 91.2?3.8
0.756?0.18 0.66?0.3 11.97?1.5 69.6?2.9
38.4?0.8
1.44?0.015=
7
7.21?7=
15?0.06 1.44?0.015= 2.898?0.18= 0.328?8= 23?25= 3.64?14= 13
2.898?0.18= 3.51?3= 37.8?28=
600?50= 42×0.16= 84×0.25= 0.36×0.9=
2.4?3= 20×0.5= 0.8×6= 1000×0.09= 1.35?27= 58×0.32= 1.08×52= 8.5×0.54= 5.62×2.4= 0.28×0.16= 1.06×0.82= 0.06×0.75= 0.41×2.01= 0.63×0.12= 3.5×2.01 1.26?0.84= 1.45×6.5+0.55×6.5 6.12×99+6.12 5.9×101-5.9
8?( )=0.8 25.8?( )=0.258 452?( )=45.2
70?( )=0.7 800.9?( )=80.09 360?( )=0.36 6.54×1.04= 0.522?0.18= 33?7.5= 10?0.8= 0.6?0.015= 0.532?0.4=
0.05?0.025= 0.21?0.012= 3.6?4.8= 8.01?0.9=
14
0.51?0.85= 6.3?0.42= 25.2?63= 0.456?1.5=
8
16.43+3.6= 21.5-20.83= 5.7+4.33= 20.1-6.9= 0.65+19.5= 0.29×3.18(保两)
4.48?2.8+1.5
35.4-9.6?(2.65-1.05) 6.3×【(0.9+1.8)?4.5】
以下简便运算
12.5×32×0.25 29.4+1.72+3.56 5.17-1.8-3.2
13.75-(3.75-6.48) 3.45+7.7+16.55+1.3 21.63-(8.5+9.63)
36.59-(6.59+7.3) 7.23+6.84-0.84+2.77
15
0.312×12= 42×0.16= 84×0.25= 58×0.32=
1.08×52=
2871?0.33=
3.1×4.05=
1、用竖式计算
0.396?1.2=
3.68×0.25=
54×0.47= 50-16.66= 0.522?0.18= 0.756?0.36= 16.9?0.13 = 420×3.5=
9
9.3?100×1000= 6×0.73= 3.82×0.45= 7.54?0.26= 91.2?0.024= 7.15×22= 90.75?3.3= 1.55?3.9= 3.7×0.016= 16
13.76×0.8= 5.2×0.6 8.4×1.3 = 13.95?3.1=
6.4×2.5=
35.4×4.2=
0.45×0.73=
0.12×0.5×0.16,
4.8×0.25,
4.48×4.4= 5.25×15 = 4.6×0.6= 0.042×0.54 = 0.76×0.32 0.25×0.046= 0.43×0.28= 2.52×3.4= 1.08×25= (保留两位小数) 3.25×9.04= (用除法验算)
0.125×1.4? 10.75?12.5= (用乘法验算) 17
2.5?0.7= (保留三位小数) 10.1?3.3= (商用循
环小数表示)
8.9×0.05= 3.08×
10
18.72?3.6=
5.2×0.9,0.9=
64,2.64×0.5=2
3.94+34.3×0.2= 0.43= 1.5×26.7= 5.22?29= 2.5×7.1×4 = 16.12×99,16.12= 7.28×99+7.28= 4.3×50×0.2= 6×15.7,15.7×24= (2.275 ,0.625)×0.28= 1.2×(9.6?2.4)?4.8= 8.9×1.1×4.7= 18
2.7×5.4×3.9= 3.6×9.85-5.6 = 8.05×3.4+7.6 =
6.58×4.5×0.9= 2.8×0.5+1.58= 4.85 + 0.35 ? 1.4=
8.7 × 17.4 - 8.7 × 7.4= (1.25,0.125)×8=
32,4.9,0.9= 4.8,4.8×0.5 =
4.8×100.1 =
56.5×99,56.5 = 7.09×10.8,0.8×7.09=
19
12.5×0.4×2.5×8 = 0.87×3.16+4.64 = 2(13.×0.×8257=
9.5×101= 0.68 ?(5.2 -3.5)× 1.25= 40.5 ? 0.81
11
× 0.18=
4.8 ×(15 ? 2.4)= 6.81+6.81×99= 0.25×185×40=
4.4×0.8,3.4×0.8= (9.37+9(37+9(37+9(37)× 2(5=
4(2.×1.,1.×1.75= 2.37×6.3+2.37×3.7= 2.5×1.25×0.32=
3.8×10.1= 2.5×(3.8×0.04=) 7.69×101 =
20
3.8×10.1 = 0.25×39+0.25= 0.125×72 = 14.7?0.07=
46×0.33+54×0.33= 6.81+6.81×99 = 0.25×185×40=
(8×5.27) ×1.25 = 6.8×0.75?0.5 = 1.53+23.4?7.2=
3.75?0.125–2.75= 13.5×0.98= 12.5×8.8 = 9.5×99=
1.2×1.4, 0.37×8.4, 3.14×2.8,
0.15×2.34,
0.85×1.12, 0.86×5.4, 40?14,
12
45.5?38,
21
26.37?31, 1560?35, 4.8?2.3, 1.55?3.9,
7.2?2.1, 5.63?6.1, 2.84×0.03, 2.52×3.4=
0.25×0.046=
3.87?7, 2.84×0.03, 4.8?23, 1.08×55=
6.03×0.25=
?13,
26.37?31,
0.382×0.13,
0.12×0.44= 2.93,1.837= 22
0.382×0.13,
32?42,
4.2?4.5, 0.24×2.15= 3.568?16=
146.4
13
26.55?59= 117?18= 9.48,1.36=
36.9?18=
四、单位换算(12%)
0.24米=( )厘米 0.09吨=( )千克 8.54平方分米=( )平方厘米 3.64千米=( )米 140平方厘米=( )平方分米 785米=( )千米 23分米=( )米
60克=( )千克 2.06千克=( )克 3元4角=( )元 15厘米,( )米 7吨60千克=( )吨 五、脱式计算(能简算的要用简便方法计算)(24%)
15.89,(6.75,5.89) 5.17,1.8,3.2 13.75,(6.48,3.75)
3.68,7.56,2.68 7.85-(2.34,0.15) 35.6,1.8,15.6,7.2
13.35,4.68,2.65-5.32 73.8,1.64,13.8,5.36 5.4?0.15=
23
2、脱式计算(能简算的要简算)。
0.125×0.25×8×4 7.4×0.28+0.28×2.6
23.4?5.85=
14
4.8×0.9+0.48 (4,0.4)×2.5
0.544?0.025=
2、脱式计算(能简算的要简算)
0.125×32 0.78×101
0.25×0.06 0.125×0.4
10.32?2 12.8?4
3.25?2.5 5.46?1.3
65?52 11.2?0.05
3.26×5.7,32.6×0.07 0.64×0.75 14.5×0.28 9 10.32?2.4 0.465?0.15 0.784?0.56 9?0.18 1.8?20
24
37.8?
7?0.56 7.3?0.25 0.798?0.38
9.8?1.4
2.52?2.4 60?4.8 72.8?0.8
0.315?1.5 31?25 0.315?0.15 2.08?26
1.2×1.4,
0.86×5.4,
45.5?38,
7.2?2.1,
15
13?20 96?64 36?48 0.37×8.4, 0.15×2.34, 1560?35,
3.87?7, 0.092?23 176?25 96?0.64 3.14×2.8, 40?14,
4.8?2.3, 146.4?13, 25
72.8?8 11.4?0.24 7.56?4.2 0.85×1.12 26.37?31 1.55?3.9, 5.63?6.1
2.84×0.03, 0.38×0.13,
26.37?31, 32?42 2.84×0.03,
4.8?23, 0.382×0.13, 4.2?4.5,
1.64,2.35= 0.58×250= 13.88,6.29= 26.3,
7.93= 18?24= 0.1575?3.15=
2.36×0.22
82.8?36
8.65,6.31= 12.5,3.6= 926×0.15= 23×7.06= 43.68?26= 0.612?1.8= 2.8×4.58 382.5?45 28.448?14= 10.88?34= 10,7.64=
1.86×7= 8?500= 100.2,2.28 44?9(精确到百分位) 25.3?0.88= 124.8?0.24= 16.787?0.28 (保留一位小数)3.57?4.2
16
45×2.46 6.4×5.48 0.756?0.36= 26
0.396?1.2= 27.5?0.025= 5.08×0.65(得数保留两位小数)
9.62?0.158(得数保留两位小数)14.2?11(商用循环小数
表示)203.5?11=
25.2?6=
1.8?12=
6.3?14=
1.26?18=
34.5 ?15= 7.83?9= 72?15= 43.5?29= 5.6?4= 4.08?8= 14.21?7= 18.9?27= 27
1.8?12= 0.54?6= 24?15= 1.35?15=
28.6?11= 20.4?24= 3.64?52= 15.6?12=
328?16= 1.35?27= 7.65?0.85= 12.6?0.28=
62.4?2.6=
19.4?12=
21?1.4=
0.51?0.22=
17
0.544?0.16= 5.98?0.23= 8.84?1.7= 7.1?2.5= 1.44?1.8= 19.76?5.2= 6.21?0.03= 1.998?0.54= 28
11.7?2.6= 10.8?4.5= 1.89?0.54= ?0.16= 1.28
2.1?0.4= 2.56?3.2= 50.18?38.6= 4.68?7.5=
29
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