问题 解答题
脱式计算(怎么简便怎么算)
(6105-435)÷14
46.71-6.81-3.19100-45÷0.9+0.75
63×(
4
9
+
5
7
3
5
×
5
6
+
1
6
÷
3
5
2
5
×〔
3
4
-(
7
12
-
1
4
)〕
答案

(1)(6105-435)÷14,

=5670÷14,

=405;

(2)46.71-6.81-3.19,

=46.71-(6.81+3.19),

=46.71-10,

=36.71;

(3)100-45÷0.9+0.75,

=100-50+0.75,

=50+0.75,

=50.75;

(4)63×(

4
9
+
5
7
),

=63×

4
9
+63×
5
7

=28+45,

=73;

(5)

3
5
×
5
6
+
1
6
÷
3
5

=

3
5
×
5
6
+
1
6
×
5
3

=

1
2
+
5
18

=

9
18
+
5
18

=

7
9

(6)

3
5
×[
3
4
-(
7
12
-
1
4
)],

=

3
5
×[
3
4
+
1
4
-
7
12
],

=

3
5
×[1-
7
12
],

=

3
5
×
5
12

=

1
4

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