新课标教学网()-海量教学资源欢迎下载!,新课标教学网()-海量教学资源欢迎下载!,加法练习课,,21+8,53+7,70+10,32+5,55+9,40+30,30+20,8+64,11+38,=60,=64,=72,=29,=37,=49,=80,=70,=50,13,33,14,44,10,60,17,87,23+8=31,5+47=52,67+2=69,对,,20,83,31,85,52,88,81,99,56 + 9 = 65,(节),8 + 25 = 33,(只),花儿里面躲着几?,3 +,想一想,如果成为一道不进位加法,花儿里面躲着几;如果成为一道进位加法,花儿里又躲着几?,6,12,18,24,30,36,42,每次增加6块。,16,24,32,40,48,56,每次增加8块。,35+7,=42(只),30+15+10,25+20+5,=55,=50,45,45,,新课标教学网()-海量教学资源欢迎下载!,