| (答え) |
| |
|
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| (1) |
|
| 1 |
- |
1 |
= |
3-1 |
= |
2 |
= |
1 |
|
|
|
|
|
| 2 |
6 |
6 |
6 |
3 |
|
| (2) |
|
| 3 |
- |
1 |
= |
9-2 |
= |
7 |
|
|
|
|
| 4 |
6 |
12 |
12 |
|
(3) |
|
| 11 |
- |
2 |
= |
11-6 |
= |
5 |
= |
1 |
|
|
|
|
|
| 15 |
5 |
15 |
15 |
3 |
|
| (4) |
|
| 7 |
- |
1 |
= |
7-3 |
= |
4 |
= |
1 |
|
|
|
|
|
| 12 |
4 |
12 |
12 |
3 |
|
| (5) |
|
| 7 |
- |
1 |
= |
7-2 |
= |
5 |
= |
1 |
|
|
|
|
|
| 10 |
5 |
10 |
10 |
2 |
|
| (6) |
|
| 2 |
- |
5 |
= |
8-5 |
= |
3 |
= |
1 |
|
|
|
|
|
| 3 |
12 |
12 |
12 |
4 |
|
| (7) |
|
| 5 |
- |
5 |
= |
15-10 |
= |
5 |
|
|
|
|
| 6 |
9 |
18 |
18 |
|
| (8) |
|
| 9 |
- |
1 |
= |
27-7 |
= |
20 |
= |
10 |
|
|
|
|
|
| 14 |
6 |
42 |
42 |
21 |
|
| (9) |
|
| 2 |
- |
7 |
= |
10-7 |
= |
3 |
= |
1 |
|
|
|
|
|
| 3 |
15 |
15 |
15 |
5 |
|
| (10) |
|
| 3 |
- |
5 |
= |
9-5 |
= |
4 |
= |
1 |
|
|
|
|
|
| 4 |
12 |
12 |
12 |
3 |
|
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