早教吧 育儿知识 作业答案 考试题库 百科 知识分享

(2012•中山模拟)4.25×5.24+1.52×2.5133+33−1391745÷[(1045−0.3)×235+10×518].

题目详情
(2012•中山模拟)4.25×5.24+1.52×2.51
3
3+
3
3−
1
3

9
17
45
÷[(10
4
5
−0.3)×
2
35
+10×
5
18
].
▼优质解答
答案和解析
(1)4.25×5.24+1.52×2.51,
=22.27+3.8152,,
=26.0852;

(2)
3
3+
3
3−
1
3

=
3
3+
3
8
3

=
3
3+
9
8

=
3
33
8

=3×
8
33

=
8
11


(3)9
17
45
÷[(10
4
5
-0.3)×
2
35
+10×
5
18
],
=9
17
45
÷[(10.8-0.3)×
2
35
+
25
9
],
=9
17
45
÷[10.5×
2
35
+
25
9
],
=9
17
45
÷[
3
5
+
25
9
],
=9
17
45
÷
152
45

=
422
45
×
45
152

=
211
76