一年级下册数学课件-1.7 20以内的退位减法复习苏教版(45张ppt)

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名称 一年级下册数学课件-1.7 20以内的退位减法复习苏教版(45张ppt)
格式 ppt
文件大小 5.2MB
资源类型 教案
版本资源 苏教版
科目 数学
更新时间 2021-05-22 15:52:53

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文档简介

(共45张PPT)
13-9
20以内退位减法
(复习)
基本功训练
全盘练
1.拨入4,加1,减2,
等于(

2.拨入12,减5,加6,等于(

3.隔档拨入8,加6,减7,等于(

3
13
7
听数拨珠
1、单档练
2、从左到右依次拨入

11、20、17、12、18
看珠写数
看珠写数
————、——-——、————、—————、————
11
14
17
13
18
18-9
13-8
14-7
11-9
=6
=5
=7
=2
听珠算
12-6
10-9
11-2
14-6
=9
=1
=9
=8
11-8
11-7
11-6
11-5
11-4
11-3
12-9
12-8
12-7
12-5
12-4
12-3
13-9
13-7
13-6
13-4
14-9
14-8
14-6
15-9
15-8
15-7
15-6
16-9
16-8
16-7
17-9
17-8
13-5
10-8
10-7
10-6
10-5
10-4
10-3
10-2
10-1
11-9
18-9
10-9
13-8
14-7
12-6
14-6
11-2
11-9
13-9
14-9
15-9
16-9
17-9
18-9
10-9
11-8
13-8
14-8
15-8
16-8
17-8
10-8
11-7
13-7
14-7
15-7
16-7
10-7
11-6
13-6
14-6
15-6
10-6
11-5
13-5
14-5
10-5
11-4
10-4
11-3
10-3
11-2
10-2
10-1
13-4
11-8
12-8
13-8
14-8
15-8
16-8
17-8
10-8
11-6
12-6
13-6
14-6
15-6
10-6
11-5
12-5
13-5
14-5
10-5
11-4
12-4
13-4
10-4
11-3
12-3
10-3
11-2
10-2
10-1
11-2
11-3
12-3
11-4
12-4
13-4
11-5
12-5
13-5
14-5
11-6
12-6
13-6
14-6
15-6
11-7
12-7
13-7
14-7
15-7
16-7
退1加1
退1加2
退1加3
退1加4
退1加5
退1加6
退1加7
退1加8
11-9
12-9
13-9
14-9
15-9
16-9
17-9
18-9
10-9
11-8
12-8
13-8
14-8
15-8
16-8
17-8
10-8
10-7
10-6
10-5
10-4
10-3
10-2
10-1
退1加9
14-9
11-2
11-3
12-3
11-4
12-4
13-4
11-5
12-5
13-5
14-5
11-6
12-6
13-6
14-6
15-6
11-7
12-7
13-7
14-7
15-7
16-7
11-8
12-8
13-8
14-8
15-8
16-8
17-8
11-9
12-9
13-9
14-9
15-9
16-9
17-9
18-9
10-9
10-8
10-7
10-6
10-5
10-4
10-3
10-2
10-1
11-6
12-6
13-6
14-6
12-7
13-7
14-7
14-9
13-8
14-8
满五退位减
直加退位减
退1加1
退1加2
退1加3
退1加4
退1加5
退1加6
退1加7
退1加8
退1加9
11-9
12-9
13-9
14-9
15-9
16-9
17-9
18-9
10-9
11-8
12-8
13-8
14-8
15-8
16-8
17-8
10-8
11-7
12-7
13-7
14-7
15-7
16-7
10-7
11-6
12-6
13-6
14-6
15-6
10-6
11-5
12-5
13-5
14-5
10-5
11-4
12-4
13-4
10-4
11-3
12-3
10-3
11-2
10-2
10-1
10-7=3
12-7=5
14-7=7
16-7=9
11-7=4
13-7=6
15-7=8
11-9
12-9
13-9
14-9
15-9
16-9
17-9
18-9
10-9
11-8
12-8
13-8
14-8
15-8
16-8
17-8
10-8
11-7
12-7
13-7
14-7
15-7
16-7
10-7
11-6
12-6
13-6
14-6
15-6
10-6
11-5
12-5
13-5
14-5
10-5
11-4
12-4
13-4
10-4
11-3
12-3
10-3
11-2
10-2
10-1
11-9
13-9
14-9
15-9
16-9
17-9
18-9
10-9
11-8
13-8
14-8
15-8
16-8
17-8
10-8
11-7
13-7
14-7
15-7
16-7
10-7
11-6
13-6
14-6
15-6
10-6
11-5
13-5
14-5
10-5
11-4
13-4
10-4
11-3
10-3
11-2
10-2
10-1
12-9
12-8
12-7
12-6
12-5
12-4
12-3
11-9
13-9
14-9
15-9
16-9
17-9
18-9
10-9
11-8
13-8
14-8
15-8
16-8
17-8
10-8
11-7
13-7
14-7
15-7
16-7
10-7
11-6
13-6
14-6
15-6
10-6
11-5
13-5
14-5
10-5
11-4
13-4
10-4
11-3
10-3
11-2
10-2
10-1
12-9=3
12-8=4
12-7=5
12-6=6
12-5=7
12-4=8
12-3=9
11-9
12-9
13-9
14-9
15-9
16-9
17-9
18-9
10-9
11-8
12-8
13-8
14-8
15-8
16-8
17-8
10-8
11-7
12-7
13-7
14-7
15-7
16-7
10-7
11-6
12-6
13-6
14-6
15-6
10-6
11-5
12-5
13-5
14-5
10-5
11-4
12-4
13-4
10-4
11-3
12-3
10-3
11-2
10-2
10-1
18-9
17-8
16-7
15-6
14-5
13-4
12-3
11-2
18-9
10-1
11-2
16-7
17-9
16-7
16-8
16-7
15-7
16-7
14-6
16-7
13-5
16-7
12-4
16-7
11-3
16-7
10-2
16-7
16-9
16-7
15-8
16-7
14-7
16-7
13-6
16-7
12-5
16-7
11-4
16-7
10-3


-4=
-8=
-1=
-5=
-8=
-2=
-6=
-8=
-3=
空拨计算,实拨检查,全对通关
6
5
4
3
4
5
9
9
9
爱国福
-
-
-
12
6


-5=
能有序地写出算式,全对通关!
13
7
14
8
11
—————
6
-
-
-
15
7


-8=
14
13
6
5
16
文明福
6
+
=14
14-
6
=
12-
8
=
12-
4
=
6本


填一填,并能根据算式说说题目的意思,全对通关!
8
8
4
8
守纪福


9
9
-7
13
-5
7
12
6
-9
12
6
-9
1
5
18
-
4
1
-
6
2
11
9
15
11
15
1分钟珠算完成,全对通关!
互助福
闪电心算,如果有困难可以借助空拨哦!


第一题


8
9
写得数
-9


第二题


11
-4
写得数
9


第三题


3
7
写得数
-2


第四题


11
4
写得数
-8


第五题


7
8
写得数
-6




8
9
-9
 ——
8
11
-4
9
 ——
16
3
7
-2
 ——
8
11
4
-8
 ——
7
7
8
-6
 ——
9
友善福
参观券
参观券
参观券
参观券
参观券
参观券
4
?
2
?
5
?
?
?
?
思考题
在空格里填数,使每一横行、竖行、斜行三个数连加的结果都等于15。
9
7
6
1
8
3