题目内容
计算:
(1)0-(+8)+(-2.7)-(+5);
(2)|-16|x(-
-
+
)
(3)-24+
×[6+(-4)2].
(1)0-(+8)+(-2.7)-(+5);
(2)|-16|x(-
| 3 |
| 4 |
| 1 |
| 2 |
| 3 |
| 8 |
(3)-24+
| 1 |
| 2 |
(1)原式=0-8-2.7-5
=-15.7;
(2)原式=16×(-
-
+
)
=16×(-
)+16×(-
)+16×
=-12-8+6
=-20+6
-14;
(3)原式=-16+
(6+16)
=-16+11
=-5.
=-15.7;
(2)原式=16×(-
| 3 |
| 4 |
| 1 |
| 2 |
| 3 |
| 8 |
=16×(-
| 3 |
| 4 |
| 1 |
| 2 |
| 3 |
| 8 |
=-12-8+6
=-20+6
-14;
(3)原式=-16+
| 1 |
| 2 |
=-16+11
=-5.
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