课件14张PPT。十几减5、4、3、2教师:齐艳红学校:阎村小学一共有11个气球一共有11个气球一共有11个气球一共有11个气球112 – 4 =814 – 5 =911 – 3 =813 – 7 =613 – 5 =813 – 6 =714 – 7 =711 – 7 =412 – 5 =715 – 7 =813 – 7 =611 – 5 =611 – 4 =712 – 3 =913 – 5=813 – 4 =911 – 3 =837512 – 7 =512 – 4 =853711 – 2 =912 – 3 =917 – 9 =816 – 5 =1113 – 4 =914 – 5 =913 – 7 =614 – 8 =6123432459999一共有13元钱