Question

口算． 37×10=	0.37×100=	0.37×1000=	2.5×4=
0.25×4=	8×2=	0.12×0.3=	2×5.8=
0.28×3=	0.16×4=	5×2=	5×1.2=
5×1.5=	3×0.25=	3.5×0.2=	5×5=
5×0.25=	0.3×0.2=	3.5×0.5=	3×1.5=

Answer 1

考點(diǎn)：整數(shù)的乘法及應(yīng)用,小數(shù)乘法

專題：計(jì)算題

分析：根據(jù)乘法運(yùn)算的計(jì)算法則計(jì)算即可求解．

解答： 解：

37×10=370	0.37×100=37	0.37×1000=370	2.5×4=10
0.25×4=1	8×2=16	0.12×0.3=0.036	2×5.8=11.6
0.28×3=0.84	0.16×4=0.64	5×2=10	5×1.2=6
5×1.5=7.5	3×0.25=0.75	3.5×0.2=0.7	5×5=25
5×0.25=1.25	0.3×0.2=0.06	3.5×0.5=1.75	3×1.5=4.5

點(diǎn)評(píng)：考查了乘法運(yùn)算，關(guān)鍵是熟練掌握計(jì)算法則正確進(jìn)行計(jì)算．