脱式计算.(1)100-91÷13(2)(100-91)÷13(3)7.73-2.3÷0.5×0.8(4)(1-45×35)÷925(5)34÷[(23-16)÷5].-数学

题目简介

脱式计算.(1)100-91÷13(2)(100-91)÷13(3)7.73-2.3÷0.5×0.8(4)(1-45×35)÷925(5)34÷[(23-16)÷5].-数学

题目详情

脱式计算.
(1)100-91÷13
(2)(100-91)÷13(3)7.73-2.3÷0.5×0.8
(4)(1-
4
5
×
3
5
)÷
9
25
(5)
3
4
÷[(
2
3
-
1
6
)÷5].
题型:解答题难度:中档来源:不详

答案

(1)100-91÷13,
=100-7,
=93;

(2)(100-91)÷13,
=9÷13,
=class="stub"9
13


(3)7.73-2.3÷0.5×0.8,
=7.73-4.6×0.8,
=7.73-3.68,
=4.05;

(4)(1-class="stub"4
5
×class="stub"3
5
)÷class="stub"9
25

=(1-class="stub"12
25
÷class="stub"9
25

=class="stub"13
25
÷class="stub"9
25

=class="stub"13
9


(5)class="stub"3
4
÷[(class="stub"2
3
-class="stub"1
6
)÷5],
=class="stub"3
4
÷[class="stub"1
2
÷5],
=class="stub"3
4
÷class="stub"1
10

=class="stub"15
2

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