单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,新课标人教版二年级上册,乘法的初步认识,6+6+6+6+6=,30,5,个,6,180,9+9+9+,+9=,20,个,9,相,同,加,数,2,+,2,+,2,3,+,3,5,+,5,+,5,6,+,6,+,6,+,6,+,6,9,+,9,+,9,+,+,9,20,个,9,求几个,的和,用乘法算更简单,1,个,4,1,个,3,用加法算,：,4,4,4,12,用乘法算：,4,3,12,3,3,3,3,12,3,4,12,2,个,4,3,个,4,2,个,3,3,个,3,4,个,3,乘,数,乘,数,乘号,积,3,4,12,=,读作：,3,乘,4,等于,12,有多少面小旗？,个,或,个,5,5,4,用加法 算,：,5+5+5+5=20,4+4+4+4+4=20,用乘法 算,：,4,5=20,5,4=20,4,通过本节课的学习，,你学会了什么？,