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怎样简便就怎样算.5.6×80%+4.4×54;26×527;(23+79)×27.

题目详情
怎样简便就怎样算.
5.6×80%+4.4×54;           26×
5
27
;              (
2
3
+
7
9
)×27.
怎样简便就怎样算.
5.6×80%+4.4×54;           26×
5
27
;              (
2
3
+
7
9
)×27.

5
27
;              (
2
3
+
7
9
)×27.
5
27
527552727
2
3
+
7
9
)×27.
2
3
232233
7
9
)×27.
7
9
797799
▼优质解答
答案和解析

(1)5.6×80%+4.4×54
=5.6×0.8+4.4×54
=4.48+237.6
=242.08

(2)26×
5
27

=(27-1)×
5
27

=27×
5
27
-1×
5
27

=5-
5
27

=4
22
27


(3)(
2
3
+
2
9
)×27
=
2
3
×27+
2
9
×27
=18+6
=24
5
27
527555272727
=(27-1)×
5
27

=27×
5
27
-1×
5
27

=5-
5
27

=4
22
27


(3)(
2
3
+
2
9
)×27
=
2
3
×27+
2
9
×27
=18+6
=24
5
27
527555272727
=27×
5
27
-1×
5
27

=5-
5
27

=4
22
27


(3)(
2
3
+
2
9
)×27
=
2
3
×27+
2
9
×27
=18+6
=24
5
27
527555272727-1×
5
27

=5-
5
27

=4
22
27


(3)(
2
3
+
2
9
)×27
=
2
3
×27+
2
9
×27
=18+6
=24
5
27
527555272727
=5-
5
27

=4
22
27


(3)(
2
3
+
2
9
)×27
=
2
3
×27+
2
9
×27
=18+6
=24
5
27
527555272727
=4
22
27


(3)(
2
3
+
2
9
)×27
=
2
3
×27+
2
9
×27
=18+6
=24
22
27
2227222222272727

(3)(
2
3
+
2
9
)×27
=
2
3
×27+
2
9
×27
=18+6
=24
2
3
23222333+
2
9
)×27
=
2
3
×27+
2
9
×27
=18+6
=24
2
9
29222999)×27
=
2
3
×27+
2
9
×27
=18+6
=24
2
3
23222333×27+
2
9
×27
=18+6
=24
2
9
29222999×27
=18+6
=24