题目内容
一根1米长的绳子,先截去
,再加上
米,这根绳子长度没变.______.
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| 2 |
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1-1×
+
,
=1-
+
,
=
+
,
=1(米),
1米=1米,
故应填:正确.
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| 2 |
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| 2 |
=1-
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| 2 |
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| 2 |
=
| 1 |
| 2 |
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| 2 |
=1(米),
1米=1米,
故应填:正确.
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