问题 解答题
脱式计算.
11
13
×(
4
5
×
26
33
)

13
14
×13+
13
14

(
3
4
+
5
8
)×32
答案

(1)

11
13
×(
4
5
×
26
33
),

=(

11
13
×
26
33
)×
4
5

=

2
3
×
4
5

=

8
15

(2)

13
14
×13+
13
14

=

13
14
×(13+1),

=

13
14
×14,

=13;

(3)(

3
4
+
5
8
)×32,

=

3
4
×32+
5
8
×32,

=24+20,

=44.

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