724-(38-16);2-35-25;49+45+59;79-(19+13).-数学

题目简介

724-(38-16);2-35-25;49+45+59;79-(19+13).-数学

题目详情

7
24
-(
3
8
-
1
6
)
2-
3
5
-
2
5
4
9
+
4
5
+
5
9
7
9
-(
1
9
+
1
3
)
题型:解答题难度:中档来源:不详

答案

(1)class="stub"7
24
-(class="stub"3
8
-class="stub"1
6
),
=class="stub"7
24
-(class="stub"9
24
-class="stub"4
24
),
=class="stub"7
24
-class="stub"5
24

=class="stub"1
12


(2)2-class="stub"3
5
-class="stub"2
5

=2-(class="stub"3
5
+class="stub"2
5
),
=2-1,
=1;

(3)class="stub"4
9
+class="stub"4
5
+class="stub"5
9

=class="stub"4
9
+class="stub"5
9
+class="stub"4
5

=1+class="stub"4
5

=1class="stub"4
5


(4)class="stub"7
9
-(class="stub"1
9
+class="stub"1
3
)

=class="stub"7
9
-class="stub"1
9
-class="stub"1
3

=class="stub"2
3
-class="stub"1
3

=class="stub"1
3

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