脱式计算①(8-49÷13)×95②52÷(1-12×710)×78.-数学

题目简介

脱式计算①(8-49÷13)×95②52÷(1-12×710)×78.-数学

题目详情

脱式计算
①(8-
4
9
÷
1
3
)×
9
5

②52÷(1-
1
2
×
7
10
)×
7
8
题型:解答题难度:中档来源:不详

答案

①(8-class="stub"4
9
÷class="stub"1
3
)×class="stub"9
5

=(8-class="stub"4
3
)×class="stub"9
5

=class="stub"20
3
×class="stub"9
5

=12;

②52÷(1-class="stub"1
2
×class="stub"7
10
)×class="stub"7
8

=52÷(1-class="stub"7
20
)×class="stub"7
8

=52÷class="stub"13
20
×class="stub"7
8

=52×class="stub"20
13
×class="stub"7
8

=70.

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