题目内容
1
+2
+3
+4
+5
+6
+7
+8
=______.
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 8 |
| 1 |
| 16 |
| 1 |
| 32 |
| 1 |
| 64 |
| 1 |
| 128 |
| 1 |
| 256 |
1
+2
+3
+4
+5
+6
+7
+8
=(1+2+3+4+5+6+7+8)+(
+
+
+
+
+
+
+
)
=(1+8)×8÷2+(1-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
)
=36+(1-
)
=36
.
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 8 |
| 1 |
| 16 |
| 1 |
| 32 |
| 1 |
| 64 |
| 1 |
| 128 |
| 1 |
| 256 |
=(1+2+3+4+5+6+7+8)+(
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 8 |
| 1 |
| 16 |
| 1 |
| 32 |
| 1 |
| 64 |
| 1 |
| 128 |
| 1 |
| 256 |
=(1+8)×8÷2+(1-
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 8 |
| 1 |
| 8 |
| 1 |
| 16 |
| 1 |
| 16 |
| 1 |
| 32 |
| 1 |
| 32 |
| 1 |
| 64 |
| 1 |
| 64 |
| 1 |
| 128 |
| 1 |
| 128 |
| 1 |
| 256 |
=36+(1-
| 1 |
| 256 |
=36
| 255 |
| 256 |
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