题目内容
下列运算正确的是( )
A.
| B.
| ||||||||||||
C.
| D.5
|
A,
-0.25=0.75-0.25=0.5;
0.5≠0.05,本选择错误.
B,
+0.55=
+
=
=1
;
1
≠1
,本选项错误.
C,
×
÷3,
=
×
,
=
;
≠
,本选项错误.
D,5
-2
-0.5,
=3
-0.5,
=3
;
本选项正确.
故选:D.
| 3 |
| 4 |
0.5≠0.05,本选择错误.
B,
| 2 |
| 3 |
| 2 |
| 3 |
| 11 |
| 20 |
| 73 |
| 60 |
| 13 |
| 60 |
1
| 13 |
| 60 |
| 11 |
| 60 |
C,
| 3 |
| 8 |
| 3 |
| 4 |
=
| 9 |
| 32 |
| 1 |
| 3 |
=
| 3 |
| 32 |
| 3 |
| 32 |
| 4 |
| 3 |
D,5
| 3 |
| 4 |
| 1 |
| 6 |
=3
| 7 |
| 12 |
=3
| 1 |
| 12 |
本选项正确.
故选:D.
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