问题 解答题
看谁算得对
4
5
+
1
4
)÷
3
7
+
7
10
300+2484÷23×25
1
6
÷[1÷(
3
5
-
3
10
)].
答案

(1)(

4
5
+
1
4
)÷
3
7
+
7
10

=

21
20
÷
3
7
+
7
10

=

49
20
+
7
10

=

63
20

(2)300+2484÷23×25,

=300+108×25,

=300+2700,

=3000;

(3)

1
6
÷[1÷(
3
5
-
3
10
)],

=

1
6
÷[1÷
3
10
],

=

1
6
÷
10
3

=

1
20

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