题目内容
计算:
(1)(-3)2×23-(-4)÷2=______
(2)(-
+
-
)×12+(-1)2011=______
(1)(-3)2×23-(-4)÷2=______
(2)(-
| 3 |
| 4 |
| 1 |
| 6 |
| 3 |
| 8 |
(1)(-3)2×23-(-4)÷2,
=9×8+2,
=74;
(2)(-
+
-
)×12+(-1)2011,
=-9+2-4.5-1,
=-12.5.
故答案为:(1)74,(2)-12.5.
=9×8+2,
=74;
(2)(-
| 3 |
| 4 |
| 1 |
| 6 |
| 3 |
| 8 |
=-9+2-4.5-1,
=-12.5.
故答案为:(1)74,(2)-12.5.
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