计算:(1)23-6×(-3)+2×(-4)-|-5|;(2)-12-[137+(-12)÷6]2×(-34)3.-数学

题目简介

计算:(1)23-6×(-3)+2×(-4)-|-5|;(2)-12-[137+(-12)÷6]2×(-34)3.-数学

题目详情

计算:
(1)23-6×(-3)+2×(-4)-|-5|;
(2)-12-[1
3
7
+(-12)÷6]2×(-
3
4
)
3
题型:解答题难度:中档来源:不详

答案

(1)23-6×(-3)+2×(-4)-|-5|
=23+18-8-5
=43-13
=30;

(2)-12-[1class="stub"3
7
+(-12)÷6]2×(-class="stub"3
4
)
3.
=-1-[1class="stub"3
7
-2]2×(-class="stub"27
64
).
=-1-[-class="stub"4
7
]2×(-class="stub"27
64
).
═-1-class="stub"16
49
×(-class="stub"27
64
).
-1+class="stub"27
196

=class="stub"169
196

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