问题 解答题
简算下面个题
32.48-12.5-7.564×
15
63
2998×9
5
11
×
3
4
+
6
11
÷
4
3
答案

(1)32.48-12.5-7.5

=32.48-(12.5+7.5),

=32.48-20,

=12.48;

(2)64×

15
63

=(63+1)×

15
63

=63×

15
63
+
15
63

=15+

15
63

=15

15
63

(3)2998×9

=×9,

=3000×9-2×9,

=27000-18,

=26982;

(4)

5
11
×
3
4
+
6
11
÷
4
3

=

5
11
×
3
4
+
6
11
×
3
4

=(

5
11
+
6
11
)×
3
4

=1×

3
4

=

3
4

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