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计算:(1)(−213)+(−56)+(−0.5)+(+116)(2)−13−(1+0.5)×13÷(−4)(3)(-1)3×(-5)÷[(-3)2+2×(-5)](4)3.34×(-22)+5.84×|-4|−(512−34+23)×12

题目详情
计算:
(1)(−2
1
3
)+(−
5
6
)+(−0.5)+(+1
1
6
)
(2)13−(1+0.5)×
1
3
÷(−4)
(3)(-1)3×(-5)÷[(-3)2+2×(-5)]
(4)3.34×(-22)+5.84×|-4|−(
5
12
3
4
+
2
3
)×12
▼优质解答
答案和解析
(1)−2
1
2
+(−2
1
3
)+(−
5
6
)+(−0.5)+(+1
1
6
),
=-
5
2
-
7
3
-
5
6
-
1
2
+
7
6

=-5;

(2)-13-(1+0.5)×
1
3
÷(-4),
=-1-
3
2
×
1
3
×(-
1
4
),
=-1+
1
8

=
7
8


(3)(-1)3×(-5)÷[(-3)2+2×(-5)],
=-1×(-5)÷(9-10),
=5÷(-1),
=-5;

(4)3.34×(-22)+5.84×|-4|−(
5
12
3
4
+
2
3
)×12,
=3.34×(-4)+5.84×4-5+9-8,
=(5.84-3.34)×4-4,
=2.5×4-4,
=6.