题目内容
计算
(1)5
-2
+6
=______
(2)
×(
+
)=______
(3)
≈______(精确到0.01)
(1)5
| 3 |
| 3 |
| 3 |
(2)
| 5 |
| 2 | ||
|
| 5 |
(3)
| 3 | 9 |
(1)原式=(5-2+6)
=9
;
(2)原式=
×
+
×
=2+5
=7;
(3)
≈10.20.
故答案为9
,7,10.20.
| 3 |
=9
| 3 |
(2)原式=
| 5 |
| 2 | ||
|
| 5 |
| 5 |
=2+5
=7;
(3)
| 3 | 9 |
故答案为9
| 3 |
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