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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
)+(−
)+(−0.5)+(+1
)
(2)−13−(1+0.5)×
÷(−4)
(3)(-1)3×(-5)÷[(-3)2+2×(-5)]
(4)3.34×(-22)+5.84×|-4|−(
−
+
)×12
(1)(−2
1 |
3 |
5 |
6 |
1 |
6 |
(2)−13−(1+0.5)×
1 |
3 |
(3)(-1)3×(-5)÷[(-3)2+2×(-5)]
(4)3.34×(-22)+5.84×|-4|−(
5 |
12 |
3 |
4 |
2 |
3 |
▼优质解答
答案和解析
(1)−2
+(−2
)+(−
)+(−0.5)+(+1
),
=-
-
-
-
+
,
=-5;
(2)-13-(1+0.5)×
÷(-4),
=-1-
×
×(-
),
=-1+
,
=−
;
(3)(-1)3×(-5)÷[(-3)2+2×(-5)],
=-1×(-5)÷(9-10),
=5÷(-1),
=-5;
(4)3.34×(-22)+5.84×|-4|−(
−
+
)×12,
=3.34×(-4)+5.84×4-5+9-8,
=(5.84-3.34)×4-4,
=2.5×4-4,
=6.
1 |
2 |
1 |
3 |
5 |
6 |
1 |
6 |
=-
5 |
2 |
7 |
3 |
5 |
6 |
1 |
2 |
7 |
6 |
=-5;
(2)-13-(1+0.5)×
1 |
3 |
=-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 |
=3.34×(-4)+5.84×4-5+9-8,
=(5.84-3.34)×4-4,
=2.5×4-4,
=6.
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