计算:(1)(-212)+(+56)+(-0.5)+(+116)(2)(-6)÷2×(-13);(3)-62-(3-7)2-2×(-1)3-|-2|(4)(12-34-78)×(-8)-数学

题目简介

计算:(1)(-212)+(+56)+(-0.5)+(+116)(2)(-6)÷2×(-13);(3)-62-(3-7)2-2×(-1)3-|-2|(4)(12-34-78)×(-8)-数学

题目详情

计算:
(1)(-2
1
2
)+(+
5
6
)+(-0.5)+(+1
1
6

(2)(-6)÷2×(-
1
3
);
(3)-62-(3-7)2-2×(-1)3-|-2|
(4)(
1
2
-
3
4
-
7
8
)×(-8)
题型:解答题难度:中档来源:不详

答案

(1)(-2class="stub"1
2
)+(+class="stub"5
6
)+(-0.5)+(+1class="stub"1
6

=(-2class="stub"1
2
-0.5)+(class="stub"5
6
+1class="stub"1
6

=-3+2
=-1;

(2)(-6)÷2×(-class="stub"1
3

=(-3)×(-class="stub"1
3

=1;

(3)-62-(3-7)2-2×(-1)3-|-2|
=-36-(-4)2-2×(-1)-2
=-36-16+2-2
=-52;

(4)(class="stub"1
2
-class="stub"3
4
-class="stub"7
8
)×(-8)
=-class="stub"1
2
×8+class="stub"3
4
×8+class="stub"7
8
×8
=-4+6+7
=9.

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