题目内容
下列计算:①
×
=
;②
=
;③
=
;④
=4.其中错误的是( )
| 3 |
| 5 |
| 15 |
|
| ||
| 10 |
3
| ||
|
| ||
| 3 |
| 16 |
| A.① | B.② | C.③ | D.④ |
①
×
=
,正确;
②
=
,正确;
③
=
=
,故错误;
④
=4,正确;
故选C.
| 3 |
| 5 |
| 15 |
②
|
| ||
| 10 |
③
3
| ||
|
3
| ||
3
|
| ||
| 3 |
④
| 16 |
故选C.
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