Question

列豎式計(jì)算．

0.37×0.4=	1.06×25=	27×0.43=	0.6×0.39=
1.7×0.86=	1.8×2.3=	2.07×53=	0.015×2.4=
3.4×1.6=	1.08×5.2=	1.25×3.6=	3.75×0.24=

Answer 1

分析：小數(shù)乘法的計(jì)算法則：按整數(shù)乘法的計(jì)算法則進(jìn)行計(jì)算，因數(shù)里面一共有幾位小數(shù)，就從積的末尾數(shù)出幾位點(diǎn)上小數(shù)點(diǎn)，據(jù)此解答．

解答：解：0.37×0.4=0.148，

1.06×25=26.5，

27×0.43=11.61，

0.6×0.39=0.234，

1.7×0.86=1.462，

1.8×2.3=4.14，

2.07×53=109.71，


0.015×2.4=0.036，

3.4×1.6=5.44，


1.08×5.2=5.616，


1.25×3.6=4.5，


3.75×0.24=0.9．

點(diǎn)評(píng)：此題考查了豎式計(jì)算的方法，要注意數(shù)位對(duì)齊，分步計(jì)算．