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_百...

题目内容
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=
答案
解析
根据小数的加、减、乘、除的方法进行计算即可．解答：解：
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：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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