计算.(能简算的要简算)34+56-2312-(14+18)1318+29+518+791-719-121925+(56-13)25+(35-13).-数学

题目简介

计算.(能简算的要简算)34+56-2312-(14+18)1318+29+518+791-719-121925+(56-13)25+(35-13).-数学

题目详情

计算.(能简算的要简算)
3
4
+
5
6
-
2
3
1
2
-(
1
4
+
1
8
)
13
18
+
2
9
+
5
18
+
7
9
1-
7
19
-
12
19
2
5
+(
5
6
-
1
3
)
2
5
+(
3
5
-
1
3
)
题型:解答题难度:中档来源:不详

答案

(1)class="stub"3
4
+class="stub"5
6
-class="stub"2
3

=class="stub"9
12
+class="stub"10
12
-class="stub"8
12

=class="stub"11
12


(2)class="stub"1
2
-(class="stub"1
4
+class="stub"1
8
),
=class="stub"4
8
-class="stub"2
8
-class="stub"1
8

=class="stub"1
8


(3)class="stub"13
18
+class="stub"2
9
+class="stub"5
18
+class="stub"7
9

=(class="stub"13
18
+class="stub"5
18
)+(class="stub"7
9
+class="stub"2
9
),
=1+1,
=2;

(4)1-class="stub"7
19
-class="stub"12
19

=1-(class="stub"7
19
+class="stub"12
19
),
=1-1,
=0;

(5)class="stub"2
5
+(class="stub"5
6
-class="stub"1
3
),
=class="stub"2
5
+class="stub"1
2

=class="stub"9
10


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

=1-class="stub"1
3

=class="stub"2
3

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