计算下面各题.45×45+15÷145512-13×56(38+27)÷156.-数学

题目简介

计算下面各题.45×45+15÷145512-13×56(38+27)÷156.-数学

题目详情

计算下面各题.
4
5
×45+
1
5
÷
1
45
5
12
-
1
3
×
5
6
3
8
+
2
7
)÷
1
56
题型:解答题难度:中档来源:不详

答案

(1)class="stub"4
5
×45+class="stub"1
5
÷class="stub"1
45

=class="stub"4
5
×45+class="stub"1
5
×45,
=(class="stub"4
5
+class="stub"1
5
)×45,
=1×45,
=45;

(2)class="stub"5
12
-class="stub"1
3
×class="stub"5
6

=class="stub"5
12
-class="stub"5
18

=class="stub"5
36


(3)(class="stub"3
8
+class="stub"2
7
)÷class="stub"1
56

=(class="stub"3
8
+class="stub"2
7
)×56,
=class="stub"3
8
×56+class="stub"2
7
×56,
=21+16,
=37.

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