题目内容

(1)2865+1495÷23
(2)5.4×(8.5-0.25)
(3)
5
11
×[﹙
2
5
1
3
﹚÷
5
6
].
(1)2865+1495÷23,
=2865+65,
=2930;

(2)5.4×(8.5-0.25),
=5.4×8.25,
=44.55;

(3)
5
11
×[﹙
2
5
1
3
﹚÷
5
6
],
=
5
11
×[
11
15
÷
5
6
],
=
5
11
×
11
15
×
6
5

=
1
3
×
6
5

=
2
5
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