人教版一年级数学下册 2.4 整理和复习课件(共17张PPT)
文档属性
| 名称 | 人教版一年级数学下册 2.4 整理和复习课件(共17张PPT) |  | |
| 格式 | pptx | ||
| 文件大小 | 3.2MB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 人教版 | ||
| 科目 | 数学 | ||
| 更新时间 | 2022-03-09 12:19:41 | ||
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文档简介
(共17张PPT)
整理和复习
破十法
想加算减
连减法
多余条件
一个数比另一个数多（少）几？
减法
13 – 4
12 – 3
11 – 2
11 – 3
12 – 4
12 – 5
12 – 9
12 – 6
12 – 7
12 – 8
11 – 5
11 – 6
11 – 7
11 – 9
11 – 8
11 – 4
13 – 5
13 – 6
13 – 7
13 – 8
13 – 9
14 – 9
14 – 6
14 – 5
14 – 7
14 – 8
17 – 9
15 – 7
15 – 9
15 – 8
15 – 6
16 – 7
16 – 9
16 – 8
17 – 8
18 – 9
11 – 2
11 – 3
11 – 5
11 – 6
11 – 7
11 – 9
11 – 8
11 – 4
12 – 9
13 – 9
14 – 9
17 – 9
15 – 9
16 – 9
18 – 9
小组活动1
按一定的顺序摆出退位减法表。
活动要求：
1、小组合作先计算出所有的算式。
2、想一想排列的方法和顺序 ，再合作排列出退位减法表。
13 – 4 = 9
12 – 3= 9
11 – 2 = 9
11 – 3 = 8
12 – 4 = 8
12 – 5 = 7
12 – 9 = 3
12 – 6 =6
12 – 7 = 5
12 – 8 = 4
11 – 5 = 6
11 – 6 = 5
11 – 7 = 4
11 – 9 = 2
11 – 8 = 3
11 – 4 = 7
13 – 5 = 8
13 – 6 = 7
13 – 7 = 6
13 – 8 = 5
13 – 9 = 4
14 – 9 = 5
14 – 6 = 8
14 – 5 = 9
14 – 7 = 7
14 – 8= 6
17 – 9 = 8
15 – 7 = 8
15 – 9 = 6
15 – 8= 7
15 – 6 = 9
16 – 7 = 9
16 – 9 = 7
16 – 8= 8
17 – 8 =9
18 – 9 = 9
小组活动2
观察表格,发现规律。
活动要求：
先从不同方向观察减法表，再把你的发现和同组同学说一说。
观察表格,发现规律
11 – 2 = 9
11 – 3 = 8
11 – 5 = 6
11 – 6 = 5
11 – 7 = 4
11 – 9 = 2
11 – 8 = 3
11 – 4 = 7
13 – 4 = 9
12 – 3= 9
12 – 4 = 8
12 – 5 = 7
12 – 9 = 3
12 – 6 =6
12 – 7 = 5
12 – 8 = 4
13 – 5 = 8
13 – 6 = 7
13 – 7 = 6
13 – 8 = 5
13 – 9 = 4
14 – 9 = 5
14 – 6 = 8
14 – 5 = 9
14 – 7 = 7
14 – 8= 6
17 – 9 = 8
15 – 7 = 8
15 – 9 = 6
15 – 8= 7
15 – 6 = 9
16 – 7 = 9
16 – 9 = 7
16 – 8= 8
17 – 8 =9
18 – 9 = 9
-1
-1
-1
-1
-1
-1
-1
+1
+1
+1
+1
+1
+1
+1
11
11
11
11
11
11
11
11
横着看
被减数不变，
减数连续减1，
差连续加1。
观察表格,发现规律
11 – 2 = 9
11 – 3 = 8
11 – 5 = 6
11 – 6 = 5
11 – 7 = 4
11 – 9 = 2
11 – 8 = 3
11 – 4 = 7
12 – 3= 9
12 – 4 = 8
12 – 5 = 7
12 – 9 = 3
12 – 6 =6
12 – 7 = 5
12 – 8 = 4
13 – 4 = 9
13 – 5 = 8
13 – 6 = 7
13 – 7 = 6
13 – 8 = 5
13 – 9 = 4
14 – 9 = 5
14 – 6 = 8
14 – 5 = 9
14 – 7 = 7
14 – 8= 6
17 – 9 = 8
15 – 7 = 8
15 – 9 = 6
15 – 8= 7
15 – 6 = 9
16 – 7 = 9
16 – 9 = 7
16 – 8= 8
17 – 8 =9
18 – 9 = 9
-1
-1
-1
-1
-1
-1
-1
+1
+1
+1
+1
+1
+1
+1
11
11
11
11
11
11
11
11
横着看
被减数不变，
减数连续减1，
差连续加1。
观察表格,发现规律
13 – 4 = 9
12 – 3= 9
11 – 2 = 9
11 – 3 = 8
12 – 4 = 8
12 – 5 = 7
12 – 6 =6
12 – 7 = 5
12 – 8 = 4
11 – 5 = 6
11 – 6 = 5
11 – 7 = 4
11 – 8 = 3
11 – 4 = 7
13 – 5 = 8
13 – 6 = 7
13 – 7 = 6
13 – 8 = 5
14 – 6 = 8
14 – 5 = 9
14 – 7 = 7
14 – 8= 6
15 – 7 = 8
15 – 8= 7
15 – 6 = 9
16 – 7 = 9
16 – 8= 8
17 – 8 =9
12 – 9 = 3
11 – 9 = 2
13 – 9 = 4
14 – 9 = 5
17 – 9 = 8
15 – 9 = 6
16 – 9 = 7
18 – 9 = 9
9
9
9
9
9
9
9
9
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
竖着看
减数不变，
被减数连续加1，
差也连续加1。
观察表格,发现规律
13 – 4 = 9
12 – 3= 9
11 – 2 = 9
11 – 3 = 8
12 – 4 = 8
12 – 5 = 7
11 – 5 = 6
11 – 4 = 7
13 – 5 = 8
14 – 5 = 9
12 – 6 =6
12 – 7 = 5
11 – 6 = 5
11 – 7 = 4
13 – 6 = 7
13 – 7 = 6
14 – 6 = 8
14 – 7 = 7
15 – 7 = 8
15 – 6 = 9
16 – 7 = 9
12 – 8 = 4
11 – 8 = 3
13 – 8 = 5
14 – 8= 6
15 – 8= 7
16 – 8= 8
17 – 8 =9
12 – 9 = 3
11 – 9 = 2
13 – 9 = 4
14 – 9 = 5
17 – 9 = 8
15 – 9 = 6
16 – 9 = 7
18 – 9 = 9
9
9
9
9
9
9
9
9
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
竖着看
减数不变，
被减数连续加1，
差也连续加1。
观察表格,发现规律
11 – 3 = 8
12 – 4 = 8
12 – 5 = 7
12 – 9 = 3
12 – 6 =6
12 – 7 = 5
12 – 8 = 4
11 – 5 = 6
11 – 6 = 5
11 – 7 = 4
11 – 9 = 2
11 – 8 = 3
11 – 4 = 7
13 – 5 = 8
13 – 6 = 7
13 – 7 = 6
13 – 8 = 5
13 – 9 = 4
14 – 9 = 5
14 – 6 = 8
14 – 7 = 7
14 – 8= 6
17 – 9 = 8
15 – 7 = 8
15 – 9 = 6
15 – 8= 7
16 – 9 = 7
16 – 8= 8
13 – 4 = 9
12 – 3= 9
11 – 2 = 9
14 – 5 = 9
15 – 6 = 9
16 – 7 = 9
17 – 8 =9
18 – 9 = 9
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
9
9
9
9
9
9
9
9
斜着看
被减数和减数同时减（或加）1，差不变.
观察表格,发现规律
12 – 5 = 7
12 – 9 = 3
12 – 6 =6
12 – 7 = 5
12 – 8 = 4
11 – 5 = 6
11 – 6 = 5
11 – 7 = 4
11 – 9 = 2
11 – 8 = 3
11 – 4 = 7
13 – 6 = 7
13 – 7 = 6
13 – 8 = 5
13 – 9 = 4
14 – 9 = 5
14 – 7 = 7
14 – 8= 6
15 – 9 = 6
15 – 8= 7
16 – 9 = 7
11 – 3 = 8
12 – 4 = 8
13 – 5 = 8
14 – 6 = 8
17 – 9 = 8
15 – 7 = 8
16 – 8= 8
13 – 4 = 9
12 – 3= 9
11 – 2 = 9
14 – 5 = 9
15 – 6 = 9
16 – 7 = 9
17 – 8 =9
18 – 9 = 9
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
9
9
9
9
9
9
9
9
斜着看
被减数和减数同时减（或加）1，差不变.
数学城堡
第一关：开智慧门
11－6=（ ）
11－7=（ ）
11－8=（ ）
（ ） －7=5
（ ） －7=6
（ ） －7=7
11－（ ）=9
12－（ ）=9
13－（ ）=9
5
4
3
12
13
14
2
3
4
第二关：搭桥过河
不计算，按得数从小到大排一排
13 — 8
13 — 2
13 — 5
13 — 9
13 — 4
13 — 0
＜
＜
＜
＜
＜
第三关：评选优胜组
比一比哪组红花多？
根据红花榜上的信息，提出数学问题。
这节复习课你有什么收获呢？
谢 谢
整理和复习
破十法
想加算减
连减法
多余条件
一个数比另一个数多（少）几？
减法
13 – 4
12 – 3
11 – 2
11 – 3
12 – 4
12 – 5
12 – 9
12 – 6
12 – 7
12 – 8
11 – 5
11 – 6
11 – 7
11 – 9
11 – 8
11 – 4
13 – 5
13 – 6
13 – 7
13 – 8
13 – 9
14 – 9
14 – 6
14 – 5
14 – 7
14 – 8
17 – 9
15 – 7
15 – 9
15 – 8
15 – 6
16 – 7
16 – 9
16 – 8
17 – 8
18 – 9
11 – 2
11 – 3
11 – 5
11 – 6
11 – 7
11 – 9
11 – 8
11 – 4
12 – 9
13 – 9
14 – 9
17 – 9
15 – 9
16 – 9
18 – 9
小组活动1
按一定的顺序摆出退位减法表。
活动要求：
1、小组合作先计算出所有的算式。
2、想一想排列的方法和顺序 ，再合作排列出退位减法表。
13 – 4 = 9
12 – 3= 9
11 – 2 = 9
11 – 3 = 8
12 – 4 = 8
12 – 5 = 7
12 – 9 = 3
12 – 6 =6
12 – 7 = 5
12 – 8 = 4
11 – 5 = 6
11 – 6 = 5
11 – 7 = 4
11 – 9 = 2
11 – 8 = 3
11 – 4 = 7
13 – 5 = 8
13 – 6 = 7
13 – 7 = 6
13 – 8 = 5
13 – 9 = 4
14 – 9 = 5
14 – 6 = 8
14 – 5 = 9
14 – 7 = 7
14 – 8= 6
17 – 9 = 8
15 – 7 = 8
15 – 9 = 6
15 – 8= 7
15 – 6 = 9
16 – 7 = 9
16 – 9 = 7
16 – 8= 8
17 – 8 =9
18 – 9 = 9
小组活动2
观察表格,发现规律。
活动要求：
先从不同方向观察减法表，再把你的发现和同组同学说一说。
观察表格,发现规律
11 – 2 = 9
11 – 3 = 8
11 – 5 = 6
11 – 6 = 5
11 – 7 = 4
11 – 9 = 2
11 – 8 = 3
11 – 4 = 7
13 – 4 = 9
12 – 3= 9
12 – 4 = 8
12 – 5 = 7
12 – 9 = 3
12 – 6 =6
12 – 7 = 5
12 – 8 = 4
13 – 5 = 8
13 – 6 = 7
13 – 7 = 6
13 – 8 = 5
13 – 9 = 4
14 – 9 = 5
14 – 6 = 8
14 – 5 = 9
14 – 7 = 7
14 – 8= 6
17 – 9 = 8
15 – 7 = 8
15 – 9 = 6
15 – 8= 7
15 – 6 = 9
16 – 7 = 9
16 – 9 = 7
16 – 8= 8
17 – 8 =9
18 – 9 = 9
-1
-1
-1
-1
-1
-1
-1
+1
+1
+1
+1
+1
+1
+1
11
11
11
11
11
11
11
11
横着看
被减数不变，
减数连续减1，
差连续加1。
观察表格,发现规律
11 – 2 = 9
11 – 3 = 8
11 – 5 = 6
11 – 6 = 5
11 – 7 = 4
11 – 9 = 2
11 – 8 = 3
11 – 4 = 7
12 – 3= 9
12 – 4 = 8
12 – 5 = 7
12 – 9 = 3
12 – 6 =6
12 – 7 = 5
12 – 8 = 4
13 – 4 = 9
13 – 5 = 8
13 – 6 = 7
13 – 7 = 6
13 – 8 = 5
13 – 9 = 4
14 – 9 = 5
14 – 6 = 8
14 – 5 = 9
14 – 7 = 7
14 – 8= 6
17 – 9 = 8
15 – 7 = 8
15 – 9 = 6
15 – 8= 7
15 – 6 = 9
16 – 7 = 9
16 – 9 = 7
16 – 8= 8
17 – 8 =9
18 – 9 = 9
-1
-1
-1
-1
-1
-1
-1
+1
+1
+1
+1
+1
+1
+1
11
11
11
11
11
11
11
11
横着看
被减数不变，
减数连续减1，
差连续加1。
观察表格,发现规律
13 – 4 = 9
12 – 3= 9
11 – 2 = 9
11 – 3 = 8
12 – 4 = 8
12 – 5 = 7
12 – 6 =6
12 – 7 = 5
12 – 8 = 4
11 – 5 = 6
11 – 6 = 5
11 – 7 = 4
11 – 8 = 3
11 – 4 = 7
13 – 5 = 8
13 – 6 = 7
13 – 7 = 6
13 – 8 = 5
14 – 6 = 8
14 – 5 = 9
14 – 7 = 7
14 – 8= 6
15 – 7 = 8
15 – 8= 7
15 – 6 = 9
16 – 7 = 9
16 – 8= 8
17 – 8 =9
12 – 9 = 3
11 – 9 = 2
13 – 9 = 4
14 – 9 = 5
17 – 9 = 8
15 – 9 = 6
16 – 9 = 7
18 – 9 = 9
9
9
9
9
9
9
9
9
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
竖着看
减数不变，
被减数连续加1，
差也连续加1。
观察表格,发现规律
13 – 4 = 9
12 – 3= 9
11 – 2 = 9
11 – 3 = 8
12 – 4 = 8
12 – 5 = 7
11 – 5 = 6
11 – 4 = 7
13 – 5 = 8
14 – 5 = 9
12 – 6 =6
12 – 7 = 5
11 – 6 = 5
11 – 7 = 4
13 – 6 = 7
13 – 7 = 6
14 – 6 = 8
14 – 7 = 7
15 – 7 = 8
15 – 6 = 9
16 – 7 = 9
12 – 8 = 4
11 – 8 = 3
13 – 8 = 5
14 – 8= 6
15 – 8= 7
16 – 8= 8
17 – 8 =9
12 – 9 = 3
11 – 9 = 2
13 – 9 = 4
14 – 9 = 5
17 – 9 = 8
15 – 9 = 6
16 – 9 = 7
18 – 9 = 9
9
9
9
9
9
9
9
9
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
竖着看
减数不变，
被减数连续加1，
差也连续加1。
观察表格,发现规律
11 – 3 = 8
12 – 4 = 8
12 – 5 = 7
12 – 9 = 3
12 – 6 =6
12 – 7 = 5
12 – 8 = 4
11 – 5 = 6
11 – 6 = 5
11 – 7 = 4
11 – 9 = 2
11 – 8 = 3
11 – 4 = 7
13 – 5 = 8
13 – 6 = 7
13 – 7 = 6
13 – 8 = 5
13 – 9 = 4
14 – 9 = 5
14 – 6 = 8
14 – 7 = 7
14 – 8= 6
17 – 9 = 8
15 – 7 = 8
15 – 9 = 6
15 – 8= 7
16 – 9 = 7
16 – 8= 8
13 – 4 = 9
12 – 3= 9
11 – 2 = 9
14 – 5 = 9
15 – 6 = 9
16 – 7 = 9
17 – 8 =9
18 – 9 = 9
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
9
9
9
9
9
9
9
9
斜着看
被减数和减数同时减（或加）1，差不变.
观察表格,发现规律
12 – 5 = 7
12 – 9 = 3
12 – 6 =6
12 – 7 = 5
12 – 8 = 4
11 – 5 = 6
11 – 6 = 5
11 – 7 = 4
11 – 9 = 2
11 – 8 = 3
11 – 4 = 7
13 – 6 = 7
13 – 7 = 6
13 – 8 = 5
13 – 9 = 4
14 – 9 = 5
14 – 7 = 7
14 – 8= 6
15 – 9 = 6
15 – 8= 7
16 – 9 = 7
11 – 3 = 8
12 – 4 = 8
13 – 5 = 8
14 – 6 = 8
17 – 9 = 8
15 – 7 = 8
16 – 8= 8
13 – 4 = 9
12 – 3= 9
11 – 2 = 9
14 – 5 = 9
15 – 6 = 9
16 – 7 = 9
17 – 8 =9
18 – 9 = 9
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
9
9
9
9
9
9
9
9
斜着看
被减数和减数同时减（或加）1，差不变.
数学城堡
第一关：开智慧门
11－6=（ ）
11－7=（ ）
11－8=（ ）
（ ） －7=5
（ ） －7=6
（ ） －7=7
11－（ ）=9
12－（ ）=9
13－（ ）=9
5
4
3
12
13
14
2
3
4
第二关：搭桥过河
不计算，按得数从小到大排一排
13 — 8
13 — 2
13 — 5
13 — 9
13 — 4
13 — 0
＜
＜
＜
＜
＜
第三关：评选优胜组
比一比哪组红花多？
根据红花榜上的信息，提出数学问题。
这节复习课你有什么收获呢？
谢 谢