问题 解答题
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.
答案

(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

单项选择题
单项选择题 A1/A2型题