Question

直接寫(xiě)得數(shù)

0.3×0.4=	500×0.02=	0×0.15=
24÷2.4=	5.6÷7=	7.07÷0.01=
0.42×20=	3×0.9=	12.5×8=

Answer 1

解：0.3×0.4=0.12	500×0.02=10	0×0.15=0
24÷2.4=10	5.6÷7=0.8	7.07÷0.01=707
0.42×20=8.4	3×0.9=2.7	12.5×8=100

分析：依據(jù)小數(shù)乘除的法計(jì)算方法解答．
點(diǎn)評(píng)：本題考查了基本的計(jì)算，注意在平時(shí)多積累經(jīng)驗(yàn)，逐步提高運(yùn)算的速度和準(zhǔn)確性，注意小數(shù)點(diǎn)的位置．