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计算:(1)-2-5+19-13+1=(2)12×(−56)×311÷114=-111-111(3)17-8÷(-2)+4×(-3)=(4)(-16+34-112)×48=(5)(−2)2−|−7|−2×(−12)=(6)−45×[(−12)÷(0.75−1)+(−2)5]=

题目详情
计算:
(1)-2-5+19-13+1=______
(2)
1
2
×(−
5
6
3
11
÷1
1
4
=
-
1
11
-
1
11

(3)17-8÷(-2)+4×(-3)=______
(4)(-
1
6
+
3
4
-
1
12
)×48=______
(5)(−2)2−|−7|−2×(−
1
2
)=______
(6)
4
5
×[(−
1
2
)÷(0.75−1)+(−2)5]=______
▼优质解答
答案和解析
(1)-2-5+19-13+1,
=-7+19-12,
=0;

(2)
1
2
×(−
5
6
3
11
÷1
1
4

=-
1
2
×
5
6
×
3
11
×
4
5

=-
1
11


(3)17-8÷(-2)+4×(-3),
=17+4-12,
=9;

(4)(-
1
6
+
3
4
-
1
12
)×48,
=
1
2
×48,
=24;

(5)(−2)2−|−7|−2×(−
1
2
),
=4-7+1,
=-2;

(6)
4
5
×[(−
1
2
)÷(0.75−1)+(−2)5],
=-
4
5
×(2-32),
=24.