怎么简便怎么算(5.9+1.65)÷0.254÷(47+45)0.6÷[38÷(415+215)]729×38+629×712+329×79.-数学

题目简介

怎么简便怎么算(5.9+1.65)÷0.254÷(47+45)0.6÷[38÷(415+215)]729×38+629×712+329×79.-数学

题目详情

怎么简便怎么算
(5.9+1.65)÷0.25
4÷(
4
7
+
4
5

0.6÷[
3
8
÷(
4
15
+
2
15
)]
7
29
×
3
8
+
6
29
×
7
12
+
3
29
×
7
9
题型:解答题难度:中档来源:不详

答案

(1)(5.9+1.65)÷0.25,
=7.55÷0.25,
=30.2;
(2)4÷(class="stub"4
7
+class="stub"4
5
),
=4÷(class="stub"20
35
+class="stub"28
35
),
=4÷class="stub"48
35

=4×class="stub"35
48

=class="stub"35
12

(3)class="stub"7
29
×class="stub"3
8
+class="stub"6
29
×class="stub"7
12
+class="stub"3
29
×class="stub"7
9

=class="stub"7
29
×class="stub"3
8
+class="stub"7
29
×class="stub"6
12
+class="stub"7
29
×class="stub"3
9

=(class="stub"3
8
+class="stub"1
2
+class="stub"1
3
)×class="stub"7
29

=(class="stub"9
24
+class="stub"12
24
+class="stub"8
24
)×class="stub"7
29

=class="stub"29
24
×class="stub"7
29

=class="stub"7
24

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