一、口算。
14 - 8 =
11 - 3 =
15 - 8 =
5 + 6 =
11 - 4 =
11 - 2 =
12 - 8 =
7 + 5 =
15 - 6 =
11 - 7 =
13 - 8 =
2 + 9 =
12 - 6 =
12 - 7 =
14 - 7 =
3 + 8 =
14 - 6 =
11 - 5 =
15 - 9 =
4 + 7 =
14 - 8 =
11 - 3 =
15 - 8 =
5 + 6 =
11 - 4 =
11 - 2 =
12 - 8 =
7 + 5 =
15 - 6 =
11 - 7 =
13 - 8 =
2 + 9 =
12 - 6 =
12 - 7 =
14 - 7 =
3 + 8 =
14 - 6 =
11 - 5 =
15 - 9 =
4 + 7 =
答案
14 - 8 = 6
11 - 3 = 8
15 - 8 = 7
5 + 6 = 11
11 - 4 = 7
11 - 2 = 9
12 - 8 = 4
7 + 5 = 12
15 - 6 = 9
11 - 7 = 4
13 - 8 = 5
2 + 9 = 11
12 - 6 = 6
12 - 7 = 5
14 - 7 = 7
3 + 8 = 11
14 - 6 = 8
11 - 5 = 6
15 - 9 = 6
4 + 7 = 11
11 - 3 = 8
15 - 8 = 7
5 + 6 = 11
11 - 4 = 7
11 - 2 = 9
12 - 8 = 4
7 + 5 = 12
15 - 6 = 9
11 - 7 = 4
13 - 8 = 5
2 + 9 = 11
12 - 6 = 6
12 - 7 = 5
14 - 7 = 7
3 + 8 = 11
14 - 6 = 8
11 - 5 = 6
15 - 9 = 6
4 + 7 = 11
二、填表。


|加数|6| |7|3| | |5|
|----|----|----|----|----|----|----|----|
|加数|6|4| | |8|7| |
|和| |13|12|11|14|14|13|
|被减数|12|15| |13| |16|14|
|----|----|----|----|----|----|----|----|
|减数| |9|7|5|6| |5|
|差|7| |5| |9|7| |
|加数|6| |7|3| | |5|
|----|----|----|----|----|----|----|----|
|加数|6|4| | |8|7| |
|和| |13|12|11|14|14|13|
|被减数|12|15| |13| |16|14|
|----|----|----|----|----|----|----|----|
|减数| |9|7|5|6| |5|
|差|7| |5| |9|7| |
答案
6+6=12
13-4=9
12-7=5
11-3=8
14-8=6
14-7=7
13-5=8
12-7=5
15-9=6
5+7=12
13-5=8
9+6=15
16-7=9
14-5=9
填写后表格:
加法表
|加数|6|9|7|3|6|7|5|
|----|----|----|----|----|----|----|----|
|加数|6|4|5|8|8|7|8|
|和|12|13|12|11|14|14|13|
减法表
|被减数|12|15|12|13|15|16|14|
|----|----|----|----|----|----|----|----|
|减数|5|9|7|5|6|9|5|
|差|7|6|5|8|9|7|9|
13-4=9
12-7=5
11-3=8
14-8=6
14-7=7
13-5=8
12-7=5
15-9=6
5+7=12
13-5=8
9+6=15
16-7=9
14-5=9
填写后表格:
加法表
|加数|6|9|7|3|6|7|5|
|----|----|----|----|----|----|----|----|
|加数|6|4|5|8|8|7|8|
|和|12|13|12|11|14|14|13|
减法表
|被减数|12|15|12|13|15|16|14|
|----|----|----|----|----|----|----|----|
|减数|5|9|7|5|6|9|5|
|差|7|6|5|8|9|7|9|
三、想一想,填一填。
13 - 4 = $□$

$\begin{matrix}□ & □ \\\hline□\end{matrix}$
11 - 5 = $□$
$\begin{matrix}□ & □ \\\hline□\end{matrix}$
12 - 3 = $□$
$\begin{matrix}□ & □ \\\hline□\end{matrix}$
13 - 4 = $□$
$\begin{matrix}□ & □ \\\hline□\end{matrix}$
11 - 5 = $□$
$\begin{matrix}□ & □ \\\hline□\end{matrix}$
12 - 3 = $□$
$\begin{matrix}□ & □ \\\hline□\end{matrix}$
答案
13 - 4 = 9
10 3
6
11 - 5 = 6
10 1
5
12 - 3 = 9
10 2
7
10 3
6
11 - 5 = 6
10 1
5
12 - 3 = 9
10 2
7
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