计算,能简算的要简算.38+51238+16-1489-(29+13)712+34+512+144-1115-41556-23+19.-数学

题目简介

计算,能简算的要简算.38+51238+16-1489-(29+13)712+34+512+144-1115-41556-23+19.-数学

题目详情

计算,能简算的要简算.
3
8
+
5
12
3
8
+
1
6
-
1
4
8
9
-(
2
9
+
1
3
7
12
+
3
4
+
5
12
+
1
4
4-
11
15
-
4
15
5
6
-
2
3
+
1
9
题型:解答题难度:中档来源:不详

答案

(1)class="stub"3
8
+class="stub"5
12

=class="stub"9
24
+class="stub"10
24

=class="stub"19
24


(2)class="stub"3
8
+class="stub"1
6
-class="stub"1
4

=class="stub"3
8
-class="stub"1
4
+class="stub"1
6

=class="stub"1
8
+class="stub"1
6

=class="stub"7
24


(3)class="stub"8
9
-(class="stub"2
9
+class="stub"1
3
),
=class="stub"8
9
-class="stub"2
9
-class="stub"1
3

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

=class="stub"1
3


(4)class="stub"7
12
+class="stub"3
4
+class="stub"5
12
+class="stub"1
4

=(class="stub"7
12
+class="stub"5
12
)+(class="stub"3
4
+class="stub"1
4
),
=1+1,
=2;

(5)4-class="stub"11
15
-class="stub"4
15

=4-(class="stub"11
15
+class="stub"4
15
),
=4-1,
=3;

(6)class="stub"5
6
-class="stub"2
3
+class="stub"1
9

=class="stub"1
6
+class="stub"1
9

=class="stub"5
18

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