《加减法复习》PPT课件.ppt
4,1,2,3,2,2,3,1,4,1,4,3,3,5,4,2,1,5,3,2,+,=,5,看图说一说,并列算式。,2+2=4,看图列算式,4,3,4,5,4,5,5,3,4,5,3,2,422,看图说一说,并列算式。,5-2=3,看图列算式,1,1,4,1,3,1,2,2,3,1,5,2,1,4,3,4,1,3,3,1,5,4,3,2,1,2,3,4,2,3,5,5,2,3,2+2=,1+3=,1+4=,3-2=,2+3=,5-1=,3+1=,算一算,4-2=,5-3=,4-3=,