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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=

解:
0.02×0.1=0.0025.06x-4.07x=0.99x12-7.8=4.2a+0.4a=1.4a
12÷0.3=404.6x+2.7x=7.3x1.7+0.43=2.130.58a-0.47a=0.11a
1.5×0.4=0.64.8x-3.1x=1.7x1.25×0.2=0.2512a-8.4a=3.6a
64.32÷16=4.026x-4.9x=1.1x5.1b+11.9b=17b1.23÷3=0.41
100×0.01=13.4×0.07=0.2383x+4x=7x0.42÷0.1=4.2
4.3b-2.7b=1.6b7÷0.25=285.1x+2.9x=8x1.75×0.8=1.4
0.3×0.4=0.125.4+1.4=6.82.7x+3.6x=6.3x16÷1.6=10
10x-3.7x=6.3x0.98+1.82=2.82.5x+4.3x=6.8x0.05×0.8=0.04
6.05x-4.96x=1.09x3.7a+5.2a=8.9a3.2÷1.6=23.12÷0.5=6.24
3.5+7.6=11.15.1a+3.9a=9a10×0.75=7.53b-0.7b=2.3b
5.6×0.1=0.56x×x=x20.9÷0.01=903.4b+5.6b=9b
72.8÷0.8=912.7b+5b=7.7b3.5×3=10.57.6b-4.3b=3.3b
32=92.52=6.254x+5x=9x3.5t-t=2.5t
8a-3a=5a7b+b=8b4c-2c=2c3.5b+2.7b=6.2b
0.32÷0.04=80.51×0.2=0.1020.12+3.4=3.52102=100

分析:根据小数的加、减、乘、除的方法进行计算即可.
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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科目:小学数学 来源: 题型:

0.02×0.1= 5.06x-4.07x= 12-7.8= a+0.4a=
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3.6÷24=0.8×1.1=7.2+12.8=46.7-3.8=
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2.4÷0.8=10.8÷9=9.6÷0.8=0.108÷2=
4.95÷0.9=9.65÷0.1=0.325×100=2.5×8=
0.56÷0.7=0.125×4=3.28×0.1=3.9÷0.13=
7.2×0.1=0.01×0.1=0.25×0.4=1.6÷0.8=
1÷2.5=1.25×0.8=3.2÷0.04=0÷1.7=
0.22×102=9.6÷0.8=5×0.24=4.5-0.05=
3.9÷0.1316.5÷0.5=5×0.12=24×0.5=
4.8×0.5=2.8+4.2=0.84÷2.1=5÷0.25=
7.8÷0.01=5.4÷0.6=3.2÷5=7×0.62=
0.56÷0.8=7.4-2.8=0.18÷0.2=0.16÷8=
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7.3×0.3=9÷6=3.6÷0.12=7.8÷0.6=
2÷5=4.5+5=0.3÷0.6=0.96÷0.2=
10.5×0.4=7.3+0.27=8×0.125=0.54÷0.6=
0.61+0.39=0.56÷28=10÷20=4.08÷0.4=
11-9.4=0.8×0.11=0.72+12.8=5.6÷0.01=
2.3×100=0.75×100=0.108÷2=10.8÷9=
0.7÷0.8=16-5.07=4.2×0.4=0.72×6=
12÷0.5=5.2×0.4=12.2÷0.2=5.6÷100=
0.41+3.7=0.02×0.5=7.2-0.8=1.4×0.5=
84÷0.21=0.75÷0.25=2.5×16=0.108÷2=
1.75+32.5=16-5.07=5.2÷13=1.64÷41=
1.02×0.2=0.26×0.3=8.4×0.02=1.29×6=
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