问题 解答题
计算下面各题,能简算的要简算.
10
3
×5×
1
15
5
6
×
5
13
+
5
6
×
8
13
(
1
2
+
1
3
+
1
6
)×12
答案

(1)

10
3
×5×
1
15

=

10
3
×(5×
1
15
),

=

10
3
×
1
3

=

10
9

(2)

5
6
×
5
13
+
5
6
×
8
13

=

5
6
×(
5
13
+
8
13
),

=

5
6
×1,

=

5
6

(3)(

1
2
+
1
3
+
1
6
)×12,

=

1
2
×12+
1
3
×12+
1
6
×12,

=6+4+2,

=12.

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