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能简算的用简便方法计算.(54+913)÷913÷(14+56)×34(56-34)÷3103.1×99+3.157×16.31-2.31÷7536÷[(56-13)×3].
题目详情
能简算的用简便方法计算.
(54+
)÷9
13÷(
+
)×
(
-
)÷
3.1×99+3.1
×16.31-2.31÷
36÷[(
-
)×3].
(54+
9 |
13 |
13÷(
1 |
4 |
5 |
6 |
3 |
4 |
(
5 |
6 |
3 |
4 |
3 |
10 |
3.1×99+3.1
5 |
7 |
7 |
5 |
36÷[(
5 |
6 |
1 |
3 |
▼优质解答
答案和解析
(1)(54+
)÷9,
=(54+
)×
,
=54×
+
×
,
=6+
,
=6
;
(2)13÷(
+
)×
,
=13×
×
,
=9;
(3)(
-
)÷
,
=
÷
,
=
;
(4)3.1×99+3.1,
=3.1×(99+1),
=3.1×100,
=310;
(5)
×16.31-2.31÷
=
×16.31-2.31×
,
=
×(16.31-2.31),
=
×14,
=10;
(6)36÷[(
-
)×3],
=36÷[
×3],
=36÷
,
=24.
9 |
13 |
=(54+
9 |
13 |
1 |
9 |
=54×
1 |
9 |
9 |
13 |
1 |
9 |
=6+
1 |
13 |
=6
1 |
13 |
(2)13÷(
1 |
4 |
5 |
6 |
3 |
4 |
=13×
12 |
13 |
3 |
4 |
=9;
(3)(
5 |
6 |
3 |
4 |
3 |
10 |
=
1 |
12 |
3 |
10 |
=
5 |
18 |
(4)3.1×99+3.1,
=3.1×(99+1),
=3.1×100,
=310;
(5)
5 |
7 |
7 |
5 |
=
5 |
7 |
5 |
7 |
=
5 |
7 |
=
5 |
7 |
=10;
(6)36÷[(
5 |
6 |
1 |
3 |
=36÷[
1 |
2 |
=36÷
3 |
2 |
=24.
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