题目内容
计算:
(1)23-6×(-3)+2×(-4)-|-5|;
(2)-12-[1
+(-12)÷6]2×(-
)3.
(1)23-6×(-3)+2×(-4)-|-5|;
(2)-12-[1
| 3 |
| 7 |
| 3 |
| 4 |
(1)23-6×(-3)+2×(-4)-|-5|
=23+18-8-5
=43-13
=30;
;
(2)-12-[1
+(-12)÷6]2×(-
)3.
=-1-[1
-2]2×(-
).
=-1-[-
]2×(-
).
═-1-
×(-
).
-1+
=
=23+18-8-5
=43-13
=30;
;
(2)-12-[1
| 3 |
| 7 |
| 3 |
| 4 |
=-1-[1
| 3 |
| 7 |
| 27 |
| 64 |
=-1-[-
| 4 |
| 7 |
| 27 |
| 64 |
═-1-
| 16 |
| 49 |
| 27 |
| 64 |
-1+
| 27 |
| 196 |
=
| 169 |
| 196 |
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