0.4A=()mA=()uA

殷阳2022-10-04 11:39:541条回答

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le46499 共回答了17个问题 | 采纳率100%: 0.4A=(400)mA=(400000)uA; 1年前

0.4a+0.4*70%*(84-a)=30.72 dogflagop1年前1: showgvc 共回答了15个问题 | 采纳率86.7%

0.4a+28%(84-a)=30.72
40a+28(84-a)=3072
12a=720
a=60

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0.02×0.1= 5.06x-4.07x= 12-7.8= a+0.4a= 12÷0.3= 4.6x+2.7x= 1. 0.02×0.1= 5.06x-4.07x= 12-7.8= a+0.4a= 12÷0.3= 4.6x+2.7x= 1.7+0.43= 0.58a-0.47a= 1.5×0.4= 4.8x-3.1x= 1.25×0.2= 12a-8.4a= 64.32÷16= 6x-4.9x= 5.1b+11.9b= 1.23÷3= 100×0.01= 3.4×0.07= 3x+4x= 0.42÷0.1= 4.3b-2.7b= 7÷0.25= 5.1x+2.9x= 1.75×0.8= 0.3×0.4= 5.4+1.4= 2.7x+3.6x= 16÷1.6= 10x-3.7x= 0.98+1.82= 2.5x+4.3x= 0.05×0.8= 6.05x-4.96x= 3.7a+5.2a= 3.2÷1.6= 3.12÷0.5= 3.5+7.6= 5.1a+3.9a= 10×0.75= 3b-0.7b= 5.6×0.1= x×x= 0.9÷0.01= 3.4b+5.6b= 72.8÷0.8= 2.7b+5b= 3.5×3= 7.6b-4.3b= 3²= 2.5²= 4x+5x= 3.5t-t= 8a-3a= 7b+b= 4c-2c= 3.5b+2.7b= 0.32÷0.04= 0.51×0.2= 0.12+3.4= 10²= 家住洛阳1年前1: hhwangd 共回答了19个问题 | 采纳率84.2%

解题思路：根据小数的加、减、乘、除的方法进行计算即可．
0.02×0.1=0.002 5.06x-4.07x=0.99x 12-7.8=4.2 a+0.4a=1.4a
12÷0.3=40 4.6x+2.7x=7.3x 1.7+0.43=2.13 0.58a-0.47a=0.11a
1.5×0.4=0.6 4.8x-3.1x=1.7x 1.25×0.2=0.25 12a-8.4a=3.6a
64.32÷16=4.02 6x-4.9x=1.1x 5.1b+11.9b=17b 1.23÷3=0.41
100×0.01=1 3.4×0.07=0.238 3x+4x=7x 0.42÷0.1=4.2
4.3b-2.7b=1.6b 7÷0.25=28 5.1x+2.9x=8x 1.75×0.8=1.4
0.3×0.4=0.12 5.4+1.4=6.8 2.7x+3.6x=6.3x 16÷1.6=10
10x-3.7x=6.3x 0.98+1.82=2.8 2.5x+4.3x=6.8x 0.05×0.8=0.04
6.05x-4.96x=1.09x 3.7a+5.2a=8.9a 3.2÷1.6=2 3.12÷0.5=6.24
3.5+7.6=11.1 5.1a+3.9a=9a 10×0.75=7.5 3b-0.7b=2.3b
5.6×0.1=0.56 x×x=x² 0.9÷0.01=90 3.4b+5.6b=9b
72.8÷0.8=91 2.7b+5b=7.7b 3.5×3=10.5 7.6b-4.3b=3.3b
3²=9 2.5²=6.25 4x+5x=9x 3.5t-t=2.5t
8a-3a=5a 7b+b=8b 4c-2c=2c 3.5b+2.7b=6.2b
0.32÷0.04=8 0.51×0.2=0.102 0.12+3.4=3.52 10²=100

点评：
本题考点：小数乘法；小数的加法和减法；小数除法．

考点点评：口算题目，要求快速准确，能用简便方法的要用简便方法，注意有字母的计算．

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0.02×0.1= 5.06x-4.07x= 12-7.8= a+0.4a= 12÷0.3= 4.6x+2.7x= 1. 0.02×0.1= 5.06x-4.07x= 12-7.8= a+0.4a= 12÷0.3= 4.6x+2.7x= 1.7+0.43= 0.58a-0.47a= 1.5×0.4= 4.8x-3.1x= 1.25×0.2= 12a-8.4a= 64.32÷16= 6x-4.9x= 5.1b+11.9b= 1.23÷3= 100×0.01= 3.4×0.07= 3x+4x= 0.42÷0.1= 4.3b-2.7b= 7÷0.25= 5.1x+2.9x= 1.75×0.8= 0.3×0.4= 5.4+1.4= 2.7x+3.6x= 16÷1.6= 10x-3.7x= 0.98+1.82= 2.5x+4.3x= 0.05×0.8= 6.05x-4.96x= 3.7a+5.2a= 3.2÷1.6= 3.12÷0.5= 3.5+7.6= 5.1a+3.9a= 10×0.75= 3b-0.7b= 5.6×0.1= x×x= 0.9÷0.01= 3.4b+5.6b= 72.8÷0.8= 2.7b+5b= 3.5×3= 7.6b-4.3b= 3²= 2.5²= 4x+5x= 3.5t-t= 8a-3a= 7b+b= 4c-2c= 3.5b+2.7b= 0.32÷0.04= 0.51×0.2= 0.12+3.4= 10²= feng冬雪飘零1年前0: 共回答了个问题 | 采纳率

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0.4A=()mA=()uA

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0.02×0.1=	5.06x-4.07x=	12-7.8=	a+0.4a=
12÷0.3=	4.6x+2.7x=	1.7+0.43=	0.58a-0.47a=
1.5×0.4=	4.8x-3.1x=	1.25×0.2=	12a-8.4a=
64.32÷16=	6x-4.9x=	5.1b+11.9b=	1.23÷3=
100×0.01=	3.4×0.07=	3x+4x=	0.42÷0.1=
4.3b-2.7b=	7÷0.25=	5.1x+2.9x=	1.75×0.8=
0.3×0.4=	5.4+1.4=	2.7x+3.6x=	16÷1.6=
10x-3.7x=	0.98+1.82=	2.5x+4.3x=	0.05×0.8=
6.05x-4.96x=	3.7a+5.2a=	3.2÷1.6=	3.12÷0.5=
3.5+7.6=	5.1a+3.9a=	10×0.75=	3b-0.7b=
5.6×0.1=	x×x=	0.9÷0.01=	3.4b+5.6b=
72.8÷0.8=	2.7b+5b=	3.5×3=	7.6b-4.3b=
3²=	2.5²=	4x+5x=	3.5t-t=
8a-3a=	7b+b=	4c-2c=	3.5b+2.7b=
0.32÷0.04=	0.51×0.2=	0.12+3.4=	10²=