题目内容
先判断下面的计算是否正确,请把不对的改正过来
+
=
=
+
=1
-
=
-
=
.
| 2 |
| 5 |
| 3 |
| 5 |
| 5 |
| 10 |
| 1 |
| 2 |
| 7 |
| 9 |
| 2 |
| 9 |
| 7 |
| 8 |
| 3 |
| 8 |
| 1 |
| 2 |
| 13 |
| 16 |
| 2 |
| 16 |
| 15 |
| 16 |
①
+
=
=
,错误;
改正:
+
=
=1;
②
+
=1,正确;
③
-
=
,正确;
④
-
=
,错误;
改正:
-
=
=
.
| 2 |
| 5 |
| 3 |
| 5 |
| 5 |
| 10 |
| 1 |
| 2 |
改正:
| 2 |
| 5 |
| 3 |
| 5 |
| 2+3 |
| 5 |
②
| 7 |
| 9 |
| 2 |
| 9 |
③
| 7 |
| 8 |
| 3 |
| 8 |
| 1 |
| 2 |
④
| 13 |
| 16 |
| 2 |
| 16 |
| 15 |
| 16 |
改正:
| 13 |
| 16 |
| 2 |
| 16 |
| 13-2 |
| 16 |
| 11 |
| 16 |
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