热烈欢迎各位领导来指导检查工作!.ppt
热烈欢迎各位领导 来指导检查工作!,可爱的小青蛙,口算,1×5,2×2,4×5,3×7,2×6,3×8,6×1,5×5,4×9,3×4,7×5,3×9,5,4,20,21,12,24,6,25,36,12,35,27,小蝌蚪找妈妈,12,18,6,2×3,6+6,9×2,6×2,6+6+6,9+9,3+3,3×4,试一试,27,15,8,6,16,18,18,21,10,6,24,18,14,12,12,9,根据口诀填空,二 得六,五二十,三 二十一,五八,2× 14,7× 21,×432,×530,三,四,七,四十,7,3,8,6,3×5=,15,15+10=,25,算一算,2×1= 3+3= 2×4= 3×2= 5+2=,1×1= 1+1= 1-1= 4×1= 5×4=,2×3= 3×5= 2×2= 2+3= 4×4=,2,6,8,6,7,1,2,0,4,20,6,15,4,5,16,4元,买5个 共用多少元?,4,×,5,20,(元),每层大约高3米,这座大楼大约高多少米?,3,×,5,15,(米),再见,