题目内容
36×(
+
-
)
| 7 |
| 12 |
| 5 |
| 9 |
| 1 |
| 4 |
36×(
+
-
),
=36×
+36×
-36×
,
=21+20-9,
=32.
| 7 |
| 12 |
| 5 |
| 9 |
| 1 |
| 4 |
=36×
| 7 |
| 12 |
| 5 |
| 9 |
| 1 |
| 4 |
=21+20-9,
=32.
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题目内容
| 7 |
| 12 |
| 5 |
| 9 |
| 1 |
| 4 |
| 7 |
| 12 |
| 5 |
| 9 |
| 1 |
| 4 |
| 7 |
| 12 |
| 5 |
| 9 |
| 1 |
| 4 |