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计算下列各题,能简算的要简算0.23×74%+0.23×26%;(1112-34)÷(1-12);34×23÷311;1748×49.

题目详情
计算下列各题,能简算的要简算
0.23×74%+0.23×26%;   (
11
12
-
3
4
)÷(1-
1
2
);
3
4
×
2
3
÷
3
11
;             
17
48
×49.
▼优质解答
答案和解析
(1)0.23×74%+0.23×26%
=0.23×(74%+26%)
=0.23×1
=0.23;

(2)(
11
12
-
3
4
)÷(1-
1
2

=
1
6
÷
1
2

=
1
3


(3)
3
4
×
2
3
÷
3
11

=
1
2
÷
3
11

=
11
6


(4)
17
48
×49
=
17
48
×(48+1)
=
17
48
×48+
17
48
×1
=17+
17
48

=17
17
48