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计算:(1)17-8÷(-2)+4×(-3)2;(2)(−478)−(−512)+(−414)−(+318);(3)(1112−76+34−1324)×(−48);(4)|−79|÷(23−15)−13×(−4)2.
题目详情
计算:
(1)17-8÷(-2)+4×(-3)2;
(2)(−4
)−(−5
)+(−4
)−(+3
);
(3)(
−
+
−
)×(−48);
(4)|−
|÷(
−
)−
×(−4)2.
(1)17-8÷(-2)+4×(-3)2;
(2)(−4
7 |
8 |
1 |
2 |
1 |
4 |
1 |
8 |
(3)(
11 |
12 |
7 |
6 |
3 |
4 |
13 |
24 |
(4)|−
7 |
9 |
2 |
3 |
1 |
5 |
1 |
3 |
▼优质解答
答案和解析
(1)17-8÷(-2)+4×(-3)2
=17-(-4)+4×9
=17+4+36
=57;
(2)(−4
)−(−5
)+(−4
)−(+3
)
=−4
+5
−4
−3
=(−4
−4
−3
)+5
=−12
+5
=−6
;
(3)(
−
+
−
)×(−48)
=-44-(-56)+(-36)-(-26)
=-44+56-36+26
=2;
(4)|−
|÷(
−
)−
×(−4)2
=
÷
−
×16
=
−
=−
.
=17-(-4)+4×9
=17+4+36
=57;
(2)(−4
7 |
8 |
1 |
2 |
1 |
4 |
1 |
8 |
=−4
7 |
8 |
1 |
2 |
1 |
4 |
1 |
8 |
=(−4
7 |
8 |
1 |
4 |
1 |
8 |
1 |
2 |
=−12
1 |
4 |
1 |
2 |
3 |
4 |
(3)(
11 |
12 |
7 |
6 |
3 |
4 |
13 |
24 |
=-44-(-56)+(-36)-(-26)
=-44+56-36+26
=2;
(4)|−
7 |
9 |
2 |
3 |
1 |
5 |
1 |
3 |
=
7 |
9 |
7 |
15 |
1 |
3 |
=
5 |
3 |
16 |
3 |
11 |
3 |
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