细心算79-23+2912+13+1415+38+4547+29-471-16-56-数学

题目简介

细心算79-23+2912+13+1415+38+4547+29-471-16-56-数学

题目详情

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

答案

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

=class="stub"7
9
+class="stub"2
9
-class="stub"2
3

=1-class="stub"2
3

=class="stub"1
3


(2)class="stub"1
2
+class="stub"1
3
+class="stub"1
4

=class="stub"6
12
+class="stub"4
12
+class="stub"3
12

=class="stub"13
12


(3)class="stub"1
5
+class="stub"3
8
+class="stub"4
5

=class="stub"1
5
+class="stub"4
5
+class="stub"3
8

=1+class="stub"3
8

=1class="stub"3
8


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

=class="stub"4
7
-class="stub"4
7
+class="stub"2
9

=0+class="stub"2
9

=class="stub"2
9


(5)1-class="stub"1
6
-class="stub"5
6

=1-(class="stub"1
6
+class="stub"5
6
),
=1-1,
=0.

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