题目内容

计算,能简算的一定要简算.
65.5+65.5×99
5
8
×[1÷(
3
4
+
1
3
)]
2
5
÷
3
4
÷
1
15
3.68-0.82-0.1836×(
2
9
+
7
12
2
3
-
2
3
÷2.
①65.5+65.5×99,
=65.5×100,
=6550;

5
8
×[1÷(
3
4
+
1
3
)],
=
5
8
×[1÷(
9
12
+
4
12
)],
=
5
8
×[1÷
13
12
],
=
5
8
×
12
13

=
15
26


2
5
÷
3
4
÷
1
15

=
2
5
×
4
3
×15,
=8;

④3.68-0.82-0.18,
=3.68-(0.82+0.18),
=3.68-1,
=2.68;

⑤36×(
2
9
+
7
12
),
=36×
2
9
+36×
7
12

=8+21,
=29;

⑥2÷
2
3
-
2
3
÷2,
=2×
3
2
-
2
3
×
1
2

=3-
1
3

=2
2
3
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