题目内容

0.25×7.6+2.4×0.25
3
4
-
1
2
-
1
6
)×24
15÷[(
2
3
+
1
5
)×
1
13
]
13
5
11
-3
4
7
-2
3
7
+2
6
11
5
8
×2
2
3
+2
1
3
÷1
1
3
13
7
8
×
1
16
+6
1
8
÷16.
(1)0.25×7.6+2.4×0.25,
=0.25×(7.6+2.4),
=0.25×10,
=2.5;

(2)(
3
4
-
1
2
-
1
6
)×24,
=
3
4
×24-
1
2
×24-
1
6
×24,
=18-12-4,
=6-4,
=2;

(3)15÷[(
2
3
+
1
5
)×
1
13
],
=15÷[
13
15
×
1
13
],
=15÷
1
15

=225;

(4)13
5
11
-3
4
7
-2
3
7
+2
6
11

=(13
5
11
+2
6
11
)-(3
4
7
+2
3
7
),
=16-6,
=10;

(5)
5
8
×2
2
3
+2
1
3
÷1
1
3

=
5
3
+
7
4

=
41
12


(6)13
7
8
×
1
16
+6
1
8
÷16,
=13
7
8
×
1
16
+6
1
8
×
1
16

=(13
7
8
+6
1
8
)×
1
16

=20×
1
16

=
5
4
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