题目内容

计算:
1.6×[1÷(2.1-2.09)] 36÷[(
5
6
-
1
3
)×3]
(2
5
6
-
1
3
)×(
5
8
÷
3
4
1÷[(8.5-4×
7
8
)÷0.125]
2.85×5
1
5
+5.2×3.15+5.2.
(1)1.6×[1÷(2.1-2.09)],
=1.6×[1÷0.01],
=1.6×100,
=160;

(2)36÷[(
5
6
-
1
3
)×3],
=36÷[
1
2
×3],
=36÷1.5,
=24;

(3)(2
5
6
-
1
3
)×(
5
8
÷
3
4
),
=2
1
2
×
5
6

=2
1
12


(4)1÷[(8.5-4×
7
8
)÷0.125],
=1÷[(8.5-3.5)÷0.125],
=1÷[5÷0.125],
=1÷40,
=
1
40


(5)2.85×5
1
5
+5.2×3.15+5.2,
=5.2×(2.85+3.15+1),
=5.2×7,
=36.4.
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