计算有捷径.825×34×56215×16+56×21557×5×145.-六年级数学

题目简介

计算有捷径.825×34×56215×16+56×21557×5×145.-六年级数学

题目详情

计算有捷径.
8
25
×
3
4
×
5
6
2
15
×
1
6
+
5
6
×
2
15
5
7
×5×
14
5
题型:解答题难度:中档来源:不详

答案

(1)class="stub"8
25
×class="stub"3
4
×class="stub"5
6

=class="stub"6
25
×class="stub"5
6

=class="stub"1
5


(2)class="stub"2
15
×class="stub"1
6
+class="stub"5
6
×class="stub"2
15

=class="stub"2
15
×(class="stub"1
6
+class="stub"5
6

=class="stub"2
15
×1
=class="stub"2
15


(3)class="stub"5
7
×5×class="stub"14
5

=class="stub"5
7
×(5×class="stub"14
5

=class="stub"5
7
×14
=10

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