,爬行最慢的哺乳动物,北师大版四年级数学下册,本节课我们主要来学习小数的乘法，同学们要能够根据因数的小数位数判断积的小数位数。并且能够列竖式计算小数乘法，解决有关小数乘法的应用题。,教学目标,0.342= 0.110=2.45=,6.33= 3.4110=2.1100=,4.23= 0.011000=5.12=,oral calculation,0.68,1,12,18.9,34.1,210,12.6,10,10.2,两个因数一共有几位小数,积就是几位小数.,The product has the same decimals as the two factors.,0.05280=14(m),2.752.2=6.05(m),
