Question

直接寫得數(shù)．

0.9×6=	7×0.08=	0.24×2=	1.4×0.3=	60×0.5=
1.87×0=	1.6×5=	4×0.25=	0.7×0.9=	3.1×0.3=
0.04×0.2=	0.16×0.5=	0.8×0.05=	1.8×0.04=	2.1×4=
0.12×6=	1.7×0.03=	2.4×0.02=

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：0.9×6=5.4	7×0.08=0.56	0.24×2=0.48	1.4×0.3=0.42	60×0.5=30
1.87×0=0	1.6×5=8	4×0.25=1	0.7×0.9=0.63	3.1×0.3=0.93
0.04×0.2=0.008	0.16×0.5=0.08	0.8×0.05=0.04	1.8×0.04=0.072	2.1×4=8.4
0.12×6=0.72	1.7×0.03=0.051	2.4×0.02=0.048

點(diǎn)評：本題考查了學(xué)生小數(shù)乘法的掌握情況．