题目内容
计算:(1)(-2)3+| 4 |
| 3 |
| 9 |
| 2 |
(2)|9
| 5 |
| 19 |
| 3 |
| 26 |
| 23 |
| 26 |
| 14 |
| 19 |
分析:根据有理数混合运算的运算顺序,先算乘方再算乘除最后算加减计算即可.
解答:解:(1)(-2)3+
×
-(-2.8)÷0.1
=-8+6+28
=26;
(2)|9
-13
|+5
-7
=13
-9
+5
-7
=19-17
=2.
| 4 |
| 3 |
| 9 |
| 2 |
=-8+6+28
=26;
(2)|9
| 5 |
| 19 |
| 3 |
| 26 |
| 23 |
| 26 |
| 14 |
| 19 |
=13
| 3 |
| 26 |
| 5 |
| 19 |
| 23 |
| 26 |
| 14 |
| 19 |
=19-17
=2.
点评:本题主要考查有理数的混合运算和绝对值的性质.
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