用你喜欢的方法计算.79-23+561920+15-9201-114-3715.8-(14.8+23)78-34+18378-149-159.-数学

题目简介

用你喜欢的方法计算.79-23+561920+15-9201-114-3715.8-(14.8+23)78-34+18378-149-159.-数学

题目详情

用你喜欢的方法计算.
7
9
-
2
3
+
5
6
19
20
+
1
5
-
9
20
1-
1
14
-
3
7
15.8-(14.8+
2
3
7
8
-
3
4
+
1
8
3
7
8
-1
4
9
-1
5
9
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"5
6

=class="stub"14
18
-class="stub"12
18
+class="stub"15
18

=class="stub"17
18


(2)class="stub"19
20
+class="stub"1
5
-class="stub"9
20

=class="stub"19
20
+class="stub"4
20
-class="stub"9
20

=class="stub"7
10


(3)1-class="stub"1
14
-class="stub"3
7

=1-(class="stub"1
14
+class="stub"6
14
),
=1-class="stub"1
2

=class="stub"1
2


(4)15.8-(14.8+class="stub"2
3
),
=15.8-14.8-class="stub"2
3

=1-class="stub"2
3

=class="stub"1
3


(5)class="stub"7
8
-class="stub"3
4
+class="stub"1
8

=class="stub"7
8
+class="stub"1
8
-class="stub"3
4

=1-class="stub"3
4

=class="stub"1
4


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

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

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