化简0.45×7×0.53×0.5×0.738+141+225×58.-数学

题目简介

化简0.45×7×0.53×0.5×0.738+141+225×58.-数学

题目详情

化简
0.45×7×0.5
3×0.5×0.7
3
8
+
1
4
1+2
2
5
×
5
8
题型:解答题难度:中档来源:不详

答案

(1)class="stub"0.45×7×0.5
3×0.5×0.7
=1.5;

(2)
class="stub"3
8
+class="stub"1
4
1+2class="stub"2
5
×class="stub"5
8

=
class="stub"5
8
1+class="stub"12
5
×class="stub"5
8

=
class="stub"5
8
1+class="stub"3
2

=
class="stub"5
8
class="stub"5
2

=class="stub"5
8
×class="stub"2
5

=class="stub"1
4

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