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精简巧算:(56+38)×48=14÷25=5978÷177=817÷23+123×917=

题目详情
精简巧算:
( 
5
6
+
3
8
)×48=
1
4
÷25=
59
78
÷
1
77
=
8
17
÷23+
1
23
×
9
17
=
▼优质解答
答案和解析
(1)( 
5
6
+
3
8
)×48,
=
5
6
×48+
3
8
×48,
=40+18,
=58;

(2)
1
4
÷25,
=
1
4
×
1
25

=
1
100


(3)
59
78
÷
1
77

=
59
78
×77,
=
59
78
×(78−1),
=
59
78
×78−
59
78
×1,
=59
59
78

=58
19
78


(4)
8
17
÷23+
1
23
×
9
17

=
8
17
×
1
23
+
1
23
×
9
17

=(
8
17
+
9
17
)×
1
23

=
1
23

=
1
23