题目内容

怎样算简便就怎样算
14
15
-(
6
15
+
1
3
13
5
-0.81-0.19
7
8
+
1
8
-
5
9
-
4
9
④5-(0.5-
3
10
⑤7.68-7.68×0.5⑥5.2+4.8×3.5.
14
15
-(
6
15
+
1
3
),
=
14
15
-
6
15
-
1
3

=
8
15
-
5
15

=
1
5


13
5
-0.81-0.19,
=
13
5
-(0.81+0.19),
=
13
5
-1,
=
8
5


7
8
+
1
8
-
5
9
-
4
9

=(
7
8
+
1
8
)-(
5
9
+
4
9
),
=1-1,
=0;

④5-(0.5-
3
10
),
=5-0.2,
=4.8;

⑤7.68-7.68×0.5,
=7.68×(1-0.5),
=7.68×0.5,
=3.84;

⑥5.2+4.8×3.5,
=5.2+16.8,
=22.
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