下面各题怎样简便就怎样算. 46.7-15.03-4.97 12.8-3.68÷2.3 (1112-34)÷(1+12) 85×0

2025-02-26 01:59:38
推荐回答(1个)
回答1:

(1)46.7-15.03-4.97,
=46.7-(15.03+4.97),
=46.7-20,
=26.7;

(2)12.8-3.68÷2.3,
=12.8-1.6,
=11.2;

(3)(
11
12
-
3
4
)÷(1+
1
2
),
=
1
6
÷
3
2

=
1
9


(4)85×0.75+
3
4
×15,
=(85+15)×
3
4

=100×
3
4

=75.