题目内容
计算:
(1)(-6.5)×(-2)+6÷(-
)-(-4)
(2)-32÷[(-2)3+(-
)2×(41-42)].
(1)(-6.5)×(-2)+6÷(-
| 2 |
| 3 |
(2)-32÷[(-2)3+(-
| 2 |
| 5 |
(1)原式=13-6×
+4
=13-9+4
=8;
(2)原式=-9÷[-8+
×(41-16)]
=-9÷[-8+
×25]
=-9÷(-8+4)
=-9÷(-4)
=
.
| 3 |
| 2 |
=13-9+4
=8;
(2)原式=-9÷[-8+
| 4 |
| 25 |
=-9÷[-8+
| 4 |
| 25 |
=-9÷(-8+4)
=-9÷(-4)
=
| 9 |
| 4 |
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