人教2011课标版一年级上100以内加减法总复习.ppt

1、100以内数的加法和减法 总复习,13-5= 12-3= 14-8= 50+4= 7+40= 58-8= 58-50= 30+20= 40-10= 40+30= 29+30= 23+30= 29+3= 23+3= 79-4= 79-40= 63-3= 63-30= 91-6= 91-60=,口算接力,8,9,6,54,47,50,8,50,30,70,59,53,32,26,75,39,60,33,85,31,13-5= 12-3= 14-8= 50+4= 7+40= 58-8= 58-50= 30+20= 40-10= 40+30= 29+30= 23+30= 29+3= 23+3= 79-

2、4= 79-40= 63-3= 63-30= 91-6= 91-60=,口算接力,8,9,6,54,47,50,8,50,30,70,59,53,32,26,75,39,60,33,85,31,13-5= 12-3= 14-8= 50+4= 7+40= 58-8= 58-50= 30+20= 40-10= 40+30= 29+30= 23+30= 29+3= 23+3= 79-4= 79-40= 63-3= 63-30= 91-6= 91-60=,口算接力,8,9,6,54,47,50,8,50,30,70,59,53,32,26,75,39,60,33,85,31,13-5= 12-3= 1

3、4-8= 50+4= 7+40= 58-8= 58-50= 30+20= 40-10= 40+30= 29+30= 23+30= 29+3= 23+3= 79-4= 79-40= 63-3= 63-30= 91-6= 91-60=,口算接力,8,9,6,54,47,50,8,50,30,70,59,53,32,26,75,39,60,33,85,31,13-5= 12-3= 14-8= 50+4= 7+40= 58-8= 58-50= 30+20= 40-10= 40+30= 29+30= 23+30= 29+3= 23+3= 79-4= 79-40= 63-3= 63-30= 91-6= 9

4、1-60=,口算接力,8,9,6,54,47,50,8,50,30,70,59,53,32,26,75,39,60,33,85,31,13-5= 12-3= 14-8= 50+4= 7+40= 58-8= 58-50= 30+20= 40-10= 40+30= 29+30= 23+30= 29+3= 23+3= 79-4= 79-40= 63-3= 63-30= 91-6= 91-60=,口算接力,8,9,6,54,47,50,8,50,30,70,59,53,32,26,75,39,60,33,85,31,判断十位,23+5,39+6,53-5,78-6,9+82,47-9,我做的对吗？,37+4=77,86-60=20,45+8=43,72-6=76,学校组织去图书馆看书。一班去了38人，二班去了30人，三班去了32人。 一班和二班一共去了多少人？ 二班比三班少去多少人？ 三个班一共去了多少人？,解决问题,38+30=68（人）,32-30=2（人）,38+3