Question

口算． 4×2.5=	0.78÷3=	3.8÷0.01=	0.13×2=
0.26÷6=	1.25×0.08=	3.25÷3.25=	12×0.25=
95.25×0=	0.54÷6=	8.4÷4.2=	5.6×0.5=

Answer 1

分析：根據(jù)小數(shù)的計(jì)算法則直接進(jìn)行口算．

解答：解：

4×2.5=10	0.78÷3=0.26	3.8÷0.01=380	0.13×2=0.26
0.26÷6=0.04 ? 3	1.25×0.08=0.1	3.25÷3.25=1	12×0.25=3
95.25×0=0	0.54÷6=0.09	8.4÷4.2=2	5.6×0.5=2.8

點(diǎn)評：此題主要考查小數(shù)運(yùn)算的口算，根據(jù)它們的計(jì)算法則進(jìn)行口算，要仔細(xì)觀察算式的特點(diǎn)，靈活運(yùn)用一些定律進(jìn)行簡便計(jì)算．