（人教新课标）一年级数学上册 8.3 5、4、3、2加几课件.ppt

20以内的进位加法,5、4、3、2加几,口算练习,15,13,11,12,14,15,13,57,58,48,39,1.,11,12,13,14,11,12,13,11,12,13,11,8,6,9,8,9,9,16,11,12,13,14,15,1. 摘水果。,巩固练习,38,47,58,39,78,86,67,49,66,79,29,59,5 + 7 = 7 + 5 = 5 + 8 = 8 + 5 =4 + 8 = 8 + 4 =3 + 9 = 9 + 3 =,12,13,12,12,