数学一级上册 乘车.ppt
,新课程 新思想 新理念,北师版一年级数学多媒体课件,口算:,2+4=,6,6+2=,7-4=,6-3=,3-3=,7-2=,6+3=,3-0=,5-4=,3+3=,3,0,3,5,9,3,6,1,8,2,3,2,又来了2人。,来了3人,,车上有2人,,5,2,+,3,+,2,=,7,2,3,7,又来了2人。,有3人下车,,车上有7人,,4,7,3,+,2,=,6,5,+,1,=,6,6,+,1,=,7,5,+,1,+,1,=,7,7,-,1,=,6,6,-,2,=,4,7,-,1,-,2,=,4,4,3,3,10,4,2,1,7,9,4,2,3,8,3,1,4,4,+,3,=,7,7,-,2,=,5,4,+,3,-,2,=,5,4,-,2,=,2,2,+,3,=,5,4,+,2,-,3,=,5,7,2,3,8,5,3,2,6,5+2+3=,10,7-2-3=,2,4+1+5=,10,8-3-4=,1,看谁做得快!,10-4+2=2+6+1=8-3-5=,4+2+1=7-2+4=6-3-1=,9-2-1=3+2-4=6+3-3=,890,792,616,2+2+=6,2+3=7,93=3,84=0,调皮小虎藏起了几?,5+2-=3,2+-6=1,93+=8,86+=5,调皮小虎藏起了几?,制作:黄静,谢谢,