- 6.44 MB
- 2021-04-14 发布
20以内的退位减法复习
苏教版一年级数学下册教学课件
11-9
12-9
13-9
14-9
15-9
16-9
17-9
18-9
11-8
12-8
13-8
14-8
15-8
16-8
17-8
11-7
12-7
13-7
14-7
15-7
16-7
11-6
12-6
11-5 11-4 11-3 11-2
13-6
14-6
15-6
12-5
13-5
14-5
12-4
13-4
12-3
20以内退位减法表
11-9
12-9
13-9
14-9
15-9
16-9
17-9
18-9
11-8
12-8
13-8
14-8
15-8
16-8
17-8
11-7
12-7
13-7
14-7
15-7
16-7
11-6
12-6
11-5 11-4 11-3 11-2
13-6
14-6
15-6
12-5
13-5
14-5
12-4
13-4
12-3
2 3 4 5 6 7 8 9
11 11 11 11 11 11 11 11
13 13 13 13 1313
12 12 12 12 1212 12
14 14 14 1414
15 15 1515
16 1616
1717
11-9
12-9
13-9
14-9
15-9
16-9
17-9
18-9
11-8
12-8
13-8
14-8
15-8
16-8
17-8
11-7
12-7
13-7
14-7
15-7
16-7
11-6
12-6
11-5 11-4 11-3 11-2
13-6
14-6
15-6
12-5
13-5
14-5
12-4
13-4
12-33
4
5
6
7
9
8
2 9
9
9
9
9
9
9
9
8
8
8
8
8
8
8
7
7
7
7
7
7
6
6
6
6
6
5
5
5
5
4
4
4
3
3
11-9
12-9
13-9
14-9
15-9
16-9
17-9
18-9
11-8
12-8
13-8
14-8
15-8
16-8
17-8
11-7
12-7
13-7
14-7
15-7
16-7
11-6
12-6
11-5 11-4 11-3 11-2
13-6
14-6
15-6
12-5
13-5
14-5
12-4
13-4
12-3
9
9
9
9
9
9
9
9
863 4 5 72
11-9
12-9
13-9
14-9
15-9
16-9
17-9
18-9
11-8
12-8
13-8
14-8
15-8
16-8
17-8
11-7
12-7
13-7
14-7
15-7
16-7
11-6
12-6
11-5 11-4 11-3 11-2
13-6
14-6
15-6
12-5
13-5
14-5
12-4
13-4
12-3
猜 一 猜
17-9=
15-8=
13-5=
14－7=
11－8 =
16－9=
11－2=
13－5=
12－3=
绿色圃中小学教育网http://www.lspjy.com
7
8
8
3
7
7
8
9
9
开火车，算一算
18个
？个
18－9 = 9（个）
12-4=8 12-8=4
写出两道减法算式
11-5 =
-
-
-
- 915
814
713
612 -
-
-
-
715
614
513
412
= 16-8
想 一 想
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