问题 解答题
递等式计算.(能简便计算的要简便计算)
826-765÷15                            7.2×99+7.2
3
4
÷[(
3
5
-
1
4
)×
3
7
]
6.13-
2
3
-
1
3
+0.87
36×(
3
4
-
1
6
+
2
9
答案

826-765÷15,

=826-51,

=775;

(2)7.2×99+7.2,

=7.2×(99+1),

=720;

(3)

3
4
÷[(
3
5
-
1
4
)×
3
7
],

=

3
4
÷[
7
20
×
3
7
],

=

3
4
×
20
3

=5;

(4)6.13-

2
3
-
1
3
+0.87,

=6.13+0.87-(

2
3
+
1
3
),

=7-1,

=6;

(5)36×(

3
4
-
1
6
+
2
9
),

=36×

3
4
-36×
1
6
+36×
2
9

=27-6+8,

=29;

填空题
单项选择题 A1/A2型题