《大家来做减法》（课件）-2024-2025学年一年级下册数学沪教版

年 级：一年级 学 科：数学 大家来做减法 选一选，算一算 10-3= 11-3= 12-3= 11-4= 11-5= 10-2= 10-4= 12-5= 11-4= 10-2= 10-3= 10-4= 8 10 10 10 +1 +1 7 6 -1 -1 2 10-3= 11-3= 12-3= 11-4= 11-5= 10-2= 10-4= 12-5= 11-4= 10-2= 10-3= 10-4= 8 10 10 10 7 6 10-3= 11-3= 12-3= 9 3 3 3 -1 -1 8 7 -1 -1 选一选，算一算 10-3= 11-3= 12-3= 11-4= 11-5= 10-2= 10-4= 12-5= 11-4= 10-2= 10-3= 10-4= 8 10 10 10 7 6 10-3= 11-3= 12-3= 9 3 3 3 8 7 11-3= 11-4= 11-5= 6 -1 -1 7 8 +1 +1 11 11 11 选一选，算一算 10-3= 11-3= 12-3= 11-4= 11-5= 10-2= 10-4= 12-5= 11-4= 10-2= 10-3= 10-4= 8 10 10 10 7 6 10-3= 11-3= 12-3= 9 3 3 3 8 7 11-3= 11-4= 11-5= 6 7 8 11 11 11 12-5= 11-4= 10-3= 7 +1 +1 7 7 +1 +1 选一选，算一算 10-2= 10-3= 10-4= 8 7 6 10-3= 11-3= 12-3= 9 3 3 3 8 7 11-3= 11-4= 11-5= 6 7 8 11 11 11 12-5= 11-4= 10-3= 7 7 7 7 7 7 选一选，算一算 10-3= 7 11-3= 8 12-3= 9 11-4= 11-5= 6 10-2= 8 10-4= 6 12-5= 7 11-4= 7 11-3= 8 12-3= 9 11-4= 11-5= 6 12-5= 7 11-4= 7 10-2= 8 10-3= 7 10-4= 6 12-3= 9 11-3= 8 10-3= 7 11-5= 6 11-4= 7 11-3= 8 10-3= 7 11-4= 7 12-5= 7 想一想，排一排 10-3= 7 10-2= 8 10-4= 6 10-3= 7 11-3= 8 12-3= 9 10-2= 8 10-4= 6 12-3= 9 11-3= 8 10-3= 7 11-5= 6 11-4= 7 11-3= 8 10-3= 7 11-4= 7 12-5= 7 想一想，排一排 10-3= 7 11-3= 8 12-3= 9 11-5= 6 10-2= 8 10-4= 6 11-4= 7 11-5= 6 11-4= 7 11-3= 8 10-3= 7 11-4= 7 12-5= 7 想一想，排一排 10-3= 7 11-3= 8 12-3= 9 11-5= 6 10-2= 8 10-4= 6 11-4= 7 10-3= 7 11-4= 7 12-5= 7 想一想，排一排 10-3= 7 11-3= 8 12-3= 9 11-5= 6 10-2= 8 10-4= 6 12-5= 7 11-4= 7 5 5 +1 +1 +1 +1 想一想，排一排 10-3= 7 11-3= 8 12-3= 9 11-5= 6 10-2= 8 10-4= 6 12-5= 7 11-4= 7 12-4= 8 想一想，填一填 12-2= 10 10-3= 7 11-3= 8 12-3= 9 11-5= 6 10-4= 6 12-5= 7 11-4= 7 12-4= 8 10-5= 5 10-2= 8 11-2= 9 想一想，填一填 10-3= 7 11-3= 8 12-3= 9 11-5= 6 10-4= 6 12-5= 7 11-4= 7 12-4= 8 10-5= 5 10-2= 8 11-2= 9 10-6= 4 10-7= 3 10-8= 2 10-9= 1 13-4= 9 13-5= 8 14-5= 9 想一想，填一填 10-3= 7 11-3= 8 12-3= 9 11-5= 6 10-4= 6 12-5= 7 11-4= 7 12-4= 8 10-5= 5 10-2= 8 11-2= 9 10-6= 4 10-7= 3 10-8= 2 10-9= 1 13-4= 9 13-5= 8 14-5= 9 12-6= 11-7= 13-8= 13-9= 14-9= 16-9= 18-9= 15-7= 16-7= 10-1= 15-6= 填一填：课本第7页 10-3= 7 11-3= 8 12-3= 9 11-5= 6 10-4 =6 12-5= 7 11-4= 7 12-4= 8 10-5= 5 10-2= 8 11-2= 9 10-6= 4 10-7= 3 10-8= 2 10-9= 1 13-4= 9 13-5= 8 14-5= 9 11-6= 5 12-6= 6 13-6= 7 14-6= 8 11-7= 4 12-7= 5 13-7= 6 14-7= 7 11-8= 3 12-8= 4 13-8= 5 14-8= 6 11-9= 2 12-9= 3 13-9= 4 14-9= 5 15-9= 6 16-9= 7 17-9= 8 18-9= 9 15-8= 7 16-8= 8 17-8= 9 15-7= 8 16-7= 9 10-1= 9 15-6= 9 填一填：课本第7页 12-3= 9 12-5= 7 12-4= 8 12-6= 6 12-7= 5 12-8= 4 12-9= 3 填一填：课本第7页 10-3= 7 11-3= 8 11-5= 6 10-4 =6 11-4= 7 10-5= 5 10-2= 8 11-2= 9 10-6= 4 10-7= 3 10-8= 2 10-9= 1 11-6= 5 11-7= 4 11-8= 3 11-9= 2 10-1= 9 13-4= 9 13-5= 8 14-5= 9 13-6= 7 14-6= 8 13-7= 6 14-7= 7 13-8= 5 14-8= 6 13-9= 4 14-9= 5 15-9= 6 16-9= 7 17-9= 8 18-9= 9 15-8= 7 16-8= 8 17-8= 9 15-7= 8 16-7= 9 15-6= 9 12 12 12 12 12 12 12 +1 +1 +1 +1 +1 +1 -1 -1 -1 -1 -1 -1 10-3= 7 11-3= 8 12-3= 9 11-5= 6 10-4 =6 12-5= 7 11-4= 7 12-4= 8 10-5= 5 10-2= 8 11-2= 9 10-6= 4 10-7= 3 10-8= 2 10-9= 1 13-4= 9 13-5= 8 14-5= 9 11-6= 5 12-6= 6 13-6= 7 14-6= 8 11-7= 4 12-7= 5 13-7= 6 14-7= 7 11-8= 3 12-8= 4 13-8= 5 14-8= 6 11-9= 2 12-9= 3 13-9= 4 14-9= 5 15-9= 6 16-9= 7 17-9= 8 18-9= 9 15-8= 7 16-8= 8 17-8= 9 15-7= 8 16-7= 9 10-1= 9 15-6= 9 填一填：课本第7页 12-3= 9 12-5= 7 12-4= 8 12-6= 6 12-7= 5 12-8= 4 12-9= 3 填一填：课本第7页 10-3= 7 11-3= 8 11-5= 6 10-4 =6 11-4= 7 10-5= 5 10-2= 8 11-2= 9 10-6= 4 10-7= 3 10-8= 2 10-9= 1 11-6= 5 11-7= 4 11-8= 3 11-9= 2 10-1= 9 13-4= 9 13-5= 8 14-5= 9 13-6= 7 14-6= 8 13-7= 6 14-7= 7 13-8= 5 14-8= 6 13-9= 4 14-9= 5 15-9= 6 15-8= 7 15-7= 8 16-7= 9 15-6= 9 16-9= 7 17-9= 8 18-9= 9 16-8= 8 17-8= 9 6 6 6 6 6 6 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 10-3= 7 11-3= 8 12-3= 9 11-5= 6 10-4 =6 12-5= 7 11-4= 7 12-4= 8 10-5= 5 10-2= 8 11-2= 9 10-6= 4 10-7= 3 10-8= 2 10-9= 1 13-4= 9 13-5= 8 14-5= 9 11-6= 5 12-6= 6 13-6= 7 14-6= 8 11-7= 4 12-7= 5 13-7= 6 14-7= 7 11-8= 3 12-8= 4 13-8= 5 14-8= 6 11-9= 2 12-9= 3 13-9= 4 14-9= 5 15-9= 6 16-9= 7 17-9= 8 18-9= 9 15-8= 7 16-8= 8 17-8= 9 15-7= 8 16-7= 9 10-1= 9 15-6= 9 填一填：课本第7页 12-3= 9 12-5= 7 12-4= 8 12-6= 6 12-7= 5 12-8= 4 12-9= 3 填一填：课本第7页 10-3= 7 11-3= 8 11-5= 6 10-4 =6 11-4= 7 10-5= 5 10-2= 8 11-2= 9 10-6= 4 10-7= 3 10-8= 2 10-9= 1 11-6= 5 11-7= 4 11-8= 3 11-9= 2 10-1= 9 13-4= 9 13-5= 8 14-5= 9 13-6= 7 14-6= 8 13-7= 6 14-7= 7 13-8= 5 14-8= 6 13-9= 4 14-9= 5 15-9= 6 15-8= 7 15-7= 8 16-7= 9 15-6= 9 16-9= 7 17-9= 8 18-9= 9 16-8= 8 17-8= 9 +1 +1 +1 +1 +1 +1 +1 +1 +1 +1 +1 +1 +1 +1 +1 +1 9 9 9 9 9 9 9 9 9 10-3= 7 11-3= 8 12-3= 9 11-5= 6 10-4 =6 12-5= 7 11-4= 7 12-4= 8 10-5= 5 10-2= 8 11-2= 9 10-6= 4 10-7= 3 10-8= 2 10-9= 1 13-4= 9 13-5= 8 14-5= 9 11-6= 5 12-6= 6 13-6= 7 14-6= 8 11-7= 4 12-7= 5 13-7= 6 14-7= 7 11-8= 3 12-8= 4 13-8= 5 14-8= 6 11-9= 2 12-9= 3 13-9= 4 14-9= 5 15-9= 6 16-9= 7 17-9= 8 18-9= 9 15-8= 7 16-8= 8 17-8= 9 15-7= 8 16-7= 9 10-1= 9 15-6= 9 填一填：课本第7页 12-3= 9 12-5= 7 12-4= 8 12-6= 6 12-7= 5 12-8= 4 12-9= 3 填一填：课本第7页 10-3= 7 11-3= 8 11-5= 6 10-4 =6 11-4= 7 10-5= 5 10-2= 8 11-2= 9 10-6= 4 10-7= 3 10-8= 2 10-9= 1 11-6= 5 11-7= 4 11-8= 3 11-9= 2 10-1= 9 13-4= 9 13-5= 8 14-5= 9 13-6= 7 14-6= 8 13-7= 6 14-7= 7 13-8= 5 14-8= 6 13-9= 4 14-9= 5 15-9= 6 15-8= 7 15-7= 8 16-7= 9 15-6= 9 16-9= 7 17-9= 8 18-9= 9 16-8= 8 17-8= 9 +1 +1 +1 +1 -1 -1 -1 -1 9 7 5 3 1 10-3= 7 11-3= 8 12-3= 9 11-5= 6 10-4 =6 12-5= 7 11-4= 7 12-4= 8 10-5= 5 10-2= 8 11-2= 9 10-6= 4 10-7= 3 10-8= 2 10-9= 1 13-4= 9 13-5= 8 14-5= 9 11-6= 5 12-6= 6 13-6= 7 14-6= 8 11-7= 4 12-7= 5 13-7= 6 14-7= 7 11-8= 3 12-8= 4 13-8= 5 14-8= 6 11-9= 2 12-9= 3 13-9= 4 14-9= 5 15-9= 6 16-9= 7 17-9= 8 18-9= 9 15-8= 7 16-8= 8 17-8= 9 15-7= 8 16-7= 9 10-1= 9 15-6= 9 填一填：课本第7页 10-7= 13-4= 11-6= 12-7= 14-7= 14-8= 16-9= 15-8= 17-8= 找规律，在空格里补算式并计算。 14-7= 7 14-8= 6 16-9= 7 15-8= 7 17-8= 9 找规律，在空格里补算式并计算。 16-8= 8 16-7= 9 14-9= 5 10-7= 13-4= 11-6= 12-7= 14-7= 7 14-8= 6 16-9= 7 15-8= 7 17-8= 9 找规律，在空格里补算式并计算。 16-8= 8 16-7= 9 14-9= 5 10-7= 3 13-4= 9 11-6= 5 12-7= 5 12-5= 7 10-5= 5 13-8= 5 练一练 在○内填入“＞” “＜”或“＝”。 －3 －5   20－ 16－ +2 ＞ -4 ＞ 回顾小结 大 家 来 做 减 法 29 作业 13-5=8，两张数卡是我的啦！ 游戏准备： 用数卡摆一个算式（如下图），每人准备0-9数卡。 游戏规则： 1. 两人游戏，每次各翻一张数卡。小的数放被减数的个位，大的数放在减数位置。数卡若相同，收回后重翻。 2. 抢答结果正确者获得数卡，计算错误则对方获得数卡。 3. 数卡全部翻完后，谁得到的数卡多谁就获胜。 数卡游戏 1 － null 11568.0 $$