题目内容

7.2÷0.8= 1.08+0.8= 27.9÷30= 3.4÷17= 0.16÷0.016=
2.3×0.4= 4×0.25= 7.5÷0.15= 5.4×5.4÷5.4×5.4= 7.6×8+2.4×8=

解：

7.2÷0.8=9	1.08+0.8=1.88	27.9÷30=0.93	3.4÷17=0.2	0.16÷0.016=10
2.3×0.4=0.92	4×0.25=1	7.5÷0.15=50	5.4×5.4÷5.4×5.4=29.16	7.6×8+2.4×8=80

分析：根据小数加减法、小数乘除法和小数四则混合运算的运算顺序进行计算即可得到答案，其中算式7.6×8+2.4×8可利用乘法分配律进行计算．
点评：此题主要考查的是小数加减法、小数乘除法和小数四则混合运算的运算顺序．

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口算． 0.4×0.25=	3.2÷0.8=	1.25×7×0.8=	1÷8=
0.2×0.9+0.6×0.2=	6.2÷0.62=	2-2÷5=	1-0.08=
0.5×0.1÷0.5×0.1=	0.01÷0.001×0.1=

4.7+2.3=	4.5×2=	6.9-2.5=	7.2×0.8=
6×3.4=	0.62-0.32=	1.4×0.5=	0.75×100=
0.02×0.5=	3.6÷0.3=	6.3÷7=	5.6÷100=
0.75÷0.25=	0.125×8=	4.8÷0.3=	0.96÷2=
0.56÷28=	0.36÷0.4=	0.64÷0.8=	0.72÷3.6=
3.6÷24=	0.8×1.1=	7.2+12.8=	46.7-3.8=
12.8÷4=	5.2÷13=	12.5÷5=	1.64÷41=
10÷20=	24÷15=	8.65×10=	0.35×0.6=
3.08×0.01=	4.95×1000=	6.9×0.1=	0.4×0.5=
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÷0.13	16.5÷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=
4.5×0.02=	8+7.2=	1.2×30=	0.012×0.2=
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=
0.8×0.05=	12.6÷0.03=	8.71÷0.1=	21÷0.21=
0.8×0.13=	0.34÷17=	8.08÷0.4=	0.5×2.2=
1.24÷4=	3.27+0.63=	5.02×0.3=	0.3×0.5=
6.4÷4=	7.2÷1.8=	0.7÷0.35=	0.72÷1.44=
0.48÷0.04=	1.25÷2.5=	5.5+55=	16.8÷8=
0.54+2.2=	3.5-0.05=	2÷0.02=	0.25×40=
1.5×0.6=	0.32÷0.8=	12.25÷0.5=	73.5×0.1=
46.5+52.5=	0.45×102=	1.25×88=	2.64+3.85+1.54=
8×1.25=	5.6÷3.5=	4.2÷0.7÷6=	0.4×8.6×25=
0.27÷0.3=	2.5×101=	0.65×101-0.65=	2.6×7÷2.6×7=

直接写出得数．

7.2÷0.8=	1.08+0.8=	27.9÷30=	3.4÷17=	0.16÷0.016=
2.3×0.4=	4×0.25=	7.5÷0.15=	5.4×5.4÷5.4×5.4=	7.6×8+2.4×8=

直接写出得数．
0.36+1.7= $数学公式$ × $数学公式$ = 0.32×0.05= 1.2÷ $数学公式$ =
6.8-1.08= 50×30%= $数学公式$ - $数学公式$ - $数学公式$ = 0.18÷0.12=

0.36+1.7=	$数学公式$ × $数学公式$ =	0.32×0.05=	1.2÷ $数学公式$ =
6.8-1.08=	50×30%=	$数学公式$ - $数学公式$ - $数学公式$ =	0.18÷0.12=

7.2÷0.8=1.08+0.8=27.9÷30=3.4÷17=0.16÷0.016=2.3×0.4=4×0.25=7.5÷0.15=5.4×5.4÷5.4×5.4=7.6×8+2.4×8=

直接写出得数． 0.36+1.7=×=0.32×0.05=1.2÷=6.8-1.08=50×30%=--=0.18÷0.12=

试题分类

7.2÷0.8= 1.08+0.8= 27.9÷30= 3.4÷17= 0.16÷0.016=
2.3×0.4= 4×0.25= 7.5÷0.15= 5.4×5.4÷5.4×5.4= 7.6×8+2.4×8=

直接写出得数．
0.36+1.7= $数学公式$ × $数学公式$ = 0.32×0.05= 1.2÷ $数学公式$ =
6.8-1.08= 50×30%= $数学公式$ - $数学公式$ - $数学公式$ = 0.18÷0.12=