《十几减5、4、3、2》教学课件1.ppt

十 几 减 5、4、3、2,9+（ ）=11 9+（ ）=14 8+（ ）=12 8+（ ）=11 7+（ ）=11 6+（ ）=11,5,4,3,4,5,填空,2,11 8 =,13 7 =,13 6 =,18 9 =,15 8 =,17 9 =,11 7 =,14 6 =,3,6,7,9,7,8,4,8,15 9 =,12 7 =,13 9 =,15 7 =,11 6 =,16 9 =,17 8 =,14 8 =,6,5,4,8,5,7,9,6,试一试 12-5= 12-4= 12-3=,7,8,9,11-2= 11-3= 11-4=,9,8,7,9,7,6,145 114 113 112 115 124 123 125,8,送 信,15 9 =,15 6 =,11 9 =,11 2 =,17 8 =,17 9 =,6,9,2,9,9,8,11 8 =,11 3 =,16 9 =,16 7 =,11 4 =,11 7 =,3,8,7,9,7,4,13 2 =,13 3 =,13 4 =,13 5 =,13 6 =,13 7 =,11,10,9,8,7,6,15 9 =,15 8 =,15 7 =,15 6 =,15 5 =,15 4 =,6,7,8,9,10,11,7 + 6 =,13 7 =,13 6 =,8 + 7 =,15 8 =,15 7 =,13,6,7,15,7,8,7 + 5 =,12 5 =,12 7 =,6 + 5 =,11 5 =,11 6 =,12,7,5,11,6,5,还剩多少瓶？,145 = 9（瓶）,答：还剩9瓶。,你收获了什么？,