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(2007•闽侯县)43×99+430.3×(77.6-5.6)56×(37-38)57×35÷6723+58×2538×〔89÷(56-34)〕

题目详情
(2007•闽侯县)43×99+43         
0.3×(77.6-5.6)
56×(
3
7
-
3
8

5
7
×
3
5
÷
6
7

2
3
+
5
8
×
2
5

3
8
×〔
8
9
÷(
5
6
-
3
4
)〕
▼优质解答
答案和解析
(1)43×99+43,
=(99+1)×43,
=100×43,
=4300;

(2)0.3×(77.6-5.6),
=0.3×72,
=21.6;

(3)56×(
3
7
-
3
8

=56×
3
7
-56×
3
8

=24-21,
=3;

(4)
5
7
×
3
5
÷
6
7

=
3
7
×
7
6

=
1
2


(5)
2
3
+
5
8
×
2
5

=
2
3
+
1
4

=
11
12


(6)
3
8
×[
8
9
÷(
5
6
-
3
4
)]
=
3
8
×[
8
9
×12],
=
3
8
×
8
9
×12,
=4.