计算下面各题,能简便的一定要简便.2-(14+17)×411149÷23-59÷2334×72.8+7245÷4(38+127)×16+112724×(14+16-13)[815-(23-715)]×

题目简介

计算下面各题,能简便的一定要简便.2-(14+17)×411149÷23-59÷2334×72.8+7245÷4(38+127)×16+112724×(14+16-13)[815-(23-715)]×

题目详情

计算下面各题,能简便的一定要简便.
2-(
1
4
+
1
7
)×
4
11
14
9
÷
2
3
-
5
9
÷
2
3
3
4
×72.8+72
4
5
÷4
3
8
+
1
27
)×16+
11
27
24×(
1
4
+
1
6
-
1
3
)
[
8
15
-(
2
3
-
7
15
)]×
15
14
题型:解答题难度:中档来源:不详

答案

(1)2-(class="stub"1
4
+class="stub"1
7
)×class="stub"4
11

=2-class="stub"11
28
×class="stub"4
11

=2-class="stub"1
7

=1class="stub"6
7


(2)class="stub"14
9
÷class="stub"2
3
-class="stub"5
9
÷class="stub"2
3

=class="stub"14
9
×class="stub"3
2
-class="stub"5
9
×class="stub"3
2

=(class="stub"14
9
-class="stub"5
9
)×class="stub"3
2

=1×class="stub"3
2

=class="stub"3
2


(3)class="stub"3
4
×72.8+72class="stub"4
5
÷4,
=class="stub"3
4
×72.8+72.8×class="stub"1
4

=72.8×(class="stub"3
4
+class="stub"1
4
),
=72.8×1,
=72.8;

(4)(class="stub"3
8
+class="stub"1
27
)×16+class="stub"11
27

=class="stub"3
8
×16+class="stub"1
27
×16+class="stub"11
27

=6+class="stub"16
27
+class="stub"11
27

=6+(class="stub"16
27
+class="stub"11
27
),
=6+1,
=7;

(5)24×(class="stub"1
4
+class="stub"1
6
-class="stub"1
3
),
=24×class="stub"1
4
+24×class="stub"1
6
-24×class="stub"1
3

=6+4-8,
=2;

(6)[class="stub"8
15
-(class="stub"2
3
-class="stub"7
15
)]×class="stub"15
14

=[(class="stub"8
15
-class="stub"2
3
+class="stub"7
15
)]×class="stub"15
14

=[class="stub"8
15
+class="stub"7
15
-class="stub"2
3
class="stub"15
14

=class="stub"1
3
×class="stub"15
14

=class="stub"5
14

更多内容推荐