脱式计算(45+14)÷73+7109÷[1-(12+16)]1.02÷(5+0.4×0.25)-数学

题目简介

脱式计算(45+14)÷73+7109÷[1-(12+16)]1.02÷(5+0.4×0.25)-数学

题目详情

脱式计算
4
5
+
1
4
)÷
7
3
+
7
10
9÷[1-(
1
2
+
1
6
)]
1.02÷(5+0.4×0.25)
题型:解答题难度:中档来源:不详

答案

(1)(class="stub"4
5
+class="stub"1
4
)÷class="stub"7
3
+class="stub"7
10

=class="stub"21
20
×class="stub"3
7
+class="stub"7
10

=class="stub"9
20
+class="stub"7
10

=class="stub"23
20


(2)9÷[1-(class="stub"1
2
+
class="stub"1
6
)],
=9÷[1-class="stub"2
3
],
=9÷class="stub"1
3

=27;

(3)1.02÷(5+0.4×0.25),
=1.02÷(5+0.1),
=1.02÷5.1,
=0.2.

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