计算下列各式:(1)(14+16)÷12-23×14+16(2)627-223×148+313÷59(3)1÷[834-(8.5-4×178)](4)(3.75-815×92)÷2720.-数学

题目简介

计算下列各式:(1)(14+16)÷12-23×14+16(2)627-223×148+313÷59(3)1÷[834-(8.5-4×178)](4)(3.75-815×92)÷2720.-数学

题目详情

计算下列各式:
(1)(
1
4
+
1
6
÷
1
2
-
2
3
×
1
4
+
1
6

(2)6
2
7
-2
2
3
×1
4
8
+3
1
3
÷
5
9

(3)1÷[8
3
4
-(8.5-4×1
7
8
)]

(4)(3.75-
8
15
×
9
2
27
20
题型:解答题难度:中档来源:不详

答案


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

=class="stub"5
12
÷class="stub"1
2
-class="stub"2
3
×class="stub"1
4
+class="stub"1
6

=class="stub"5
6
-class="stub"1
6
+class="stub"1
6

=class="stub"5
6


(2)6class="stub"2
7
-2class="stub"2
3
×1class="stub"4
8
+3class="stub"1
3
÷class="stub"5
9

=6class="stub"2
7
-4+6,
=2class="stub"2
7
+6,
=8class="stub"2
7


(3)1÷[8class="stub"3
4
-(8.5-4×1class="stub"7
8
)]

=1÷[8class="stub"3
4
-(8.5-class="stub"15
2
)]

=1÷[8class="stub"3
4
-1]

=1÷7class="stub"3
4

=class="stub"4
31


(4)(3.75-class="stub"8
15
×class="stub"9
2
)÷class="stub"27
20

=(3.75-class="stub"12
5
)÷class="stub"27
20

=class="stub"27
20
÷class="stub"27
20

=1.

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