Question

直接寫得數(shù)． 10÷0.01=	0.22+0.8=	10-2.05=	3.5×0.4=	4÷0.25=
0÷19.8=	0.2×0.05=	0.6×1.5=	1.36+2.87+3.64=	1.8×0.4×0.25=

Answer 1

分析：①⑤把被除數(shù)和除數(shù)分別擴(kuò)大100倍，計(jì)算即可；②③注意數(shù)位對(duì)齊；④⑦⑧去掉小數(shù)點(diǎn)，先算整數(shù)乘整數(shù)然后在結(jié)果中從后向前數(shù)出小數(shù)的位數(shù)，點(diǎn)上小數(shù)點(diǎn)即可；⑥0除以任何數(shù)都得0；⑨運(yùn)用附加法交換律與結(jié)合律簡(jiǎn)算；⑩運(yùn)用乘法結(jié)合律簡(jiǎn)算．

解答：解：10÷0.01=1000；  0.22+0.8=1.02；   10-2.05=7.95；   3.5×0.4=14；          4÷0.25=16；
0÷19.8=0；          0.2×0.05=0.01；   0.6×1.5=0.9；   1.36+2.87+3.64=7.87；  1.8×0.4×0.25=0.18；

點(diǎn)評(píng)：此題綜合考查了小數(shù)的四則運(yùn)算，類型齊全，根據(jù)題目特點(diǎn)，靈活解答．