计算下列各题.1-213-111313+23-91012-27+49512-(78-59)-数学

题目简介

计算下列各题.1-213-111313+23-91012-27+49512-(78-59)-数学

题目详情

计算下列各题.
1-
2
13
-
11
13
1
3
+
2
3
-
9
10
1
2
-
2
7
+
4
9
5
12
-(
7
8
-
5
9
题型:解答题难度:中档来源:不详

答案


(1)1-class="stub"2
13
-class="stub"11
13

=1-(class="stub"2
13
+class="stub"11
13
),
=1-1,
=0;

(2)class="stub"1
3
+class="stub"2
3
-class="stub"9
10

=1-class="stub"9
10

=class="stub"1
10


(3)class="stub"1
2
-class="stub"2
7
+class="stub"4
9

=class="stub"3
14
+class="stub"4
9

=class="stub"83
126


(4)class="stub"5
12
-(class="stub"7
8
-class="stub"5
9
),
=class="stub"5
12
-class="stub"23
72

=class="stub"7
72

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