脱式计算,能简算的要简算.[1-(14+38)]÷124457-313+127-22389×[78-(716-18)]4.6×138+8.4÷811-138×5.-数学

题目简介

脱式计算,能简算的要简算.[1-(14+38)]÷124457-313+127-22389×[78-(716-18)]4.6×138+8.4÷811-138×5.-数学

题目详情

脱式计算,能简算的要简算.
[1-(
1
4
+
3
8
)]÷
1
24

4
5
7
-3
1
3
+1
2
7
-2
2
3
8
9
×[
7
8
-(
7
16
-
1
8
)]
4.6×1
3
8
+8.4÷
8
11
-1
3
8
×5.
题型:解答题难度:中档来源:不详

答案

[1-(class="stub"1
4
+class="stub"3
8
)]÷class="stub"1
24

=[1-class="stub"5
8
class="stub"1
24

=class="stub"3
8
×24,
=9;

4class="stub"5
7
-3class="stub"1
3
+1class="stub"2
7
-2class="stub"2
3

=(4class="stub"5
7
+1class="stub"2
7
)-(3class="stub"1
3
+2class="stub"2
3
),
=6-6,
=0;

class="stub"8
9
×[class="stub"7
8
-(class="stub"7
16
-class="stub"1
8
)],
=class="stub"8
9
×[class="stub"7
8
-(class="stub"7
16
-class="stub"2
16
)],
=class="stub"8
9
×[class="stub"7
8
-class="stub"5
16
],
=class="stub"8
9
×[class="stub"14
16
-class="stub"5
16
],
=class="stub"8
9
×class="stub"9
16

=class="stub"1
2


4.6×1class="stub"3
8
+8.4÷class="stub"8
11
-1class="stub"3
8
×5,
=4.6×class="stub"11
8
+8.4×class="stub"11
8
-class="stub"11
8
×5,
=class="stub"11
8
×(4.6+8.4-5),
=class="stub"11
8
×8,
=11.

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