题目内容
(1)gy×
| (7)
|
(1))27×
=(21+1)×
=21×
+
=1地+
=1地
;
(2)(
+
)×2v+
=
×2v+
×2v+
=
+(
+
)
=
+1
=1
;
(v)
+
+
+
+
+
=1-
+
-
+
-
+
-
+
-
+
-
=1-
=
.
| 1地 |
| 21 |
=(21+1)×
| 1地 |
| 21 |
=21×
| 1地 |
| 21 |
| 1地 |
| 21 |
=1地+
| 1地 |
| 21 |
=1地
| 1地 |
| 21 |
(2)(
| 1 |
| 19 |
| 2 |
| 71 |
| 2地 |
| 71 |
=
| 1 |
| 19 |
| 2 |
| 71 |
| 2地 |
| 71 |
=
| 1 |
| v |
| 41 |
| 71 |
| 2地 |
| 71 |
=
| 1 |
| v |
=1
| 1 |
| v |
(v)
| 1 |
| 2 |
| 1 |
| 1 |
| 1 |
| 12 |
| 1 |
| 20 |
| 1 |
| v0 |
| 1 |
| 42 |
=1-
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| v |
| 1 |
| v |
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 地 |
| 1 |
| 地 |
| 1 |
| 1 |
| 1 |
| 1 |
| 1 |
| 7 |
=1-
| 1 |
| 7 |
=
| 1 |
| 7 |
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