下面各题,用你喜欢的方法计算.12×(56-24)12÷54×236÷(1-23)813×17+17×51319-45-6513÷[14÷(23-12)].-数学

题目简介

下面各题,用你喜欢的方法计算.12×(56-24)12÷54×236÷(1-23)813×17+17×51319-45-6513÷[14÷(23-12)].-数学

题目详情

下面各题,用你喜欢的方法计算.
12×(
5
6
-
2
4
)
1
2
÷
5
4
×
2
3
6÷(1-
2
3
)
8
13
×
1
7
+
1
7
×
5
13
19-
4
5
-
6
5
1
3
÷[
1
4
÷(
2
3
-
1
2
)]
题型:解答题难度:中档来源:不详

答案

(1)12×(class="stub"5
6
-class="stub"2
4
),
=12×class="stub"5
6
-class="stub"2
4
×12,
=10-6,
=4;

(2)class="stub"1
2
÷class="stub"5
4
×class="stub"2
3

=class="stub"1
2
×class="stub"4
5
×class="stub"2
3

=class="stub"4
15


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

=6×3,
=18;

(4)class="stub"8
13
×class="stub"1
7
+class="stub"1
7
×class="stub"5
13

=class="stub"1
7
×(class="stub"5
13
+class="stub"8
13
),
=class="stub"1
7
×1,
=class="stub"1
7


(5)19-class="stub"4
5
-class="stub"6
5

=19-(class="stub"4
5
+class="stub"6
5
),
=19-2,
=17;

(6)class="stub"1
3
÷[class="stub"1
4
÷(class="stub"2
3
-class="stub"1
2
)],
=class="stub"1
3
÷[class="stub"1
4
÷class="stub"1
6
],
=class="stub"1
3
÷[class="stub"1
4
×6],
=class="stub"1
3
÷class="stub"3
2

=class="stub"1
3
×class="stub"2
3

=class="stub"2
9

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