计算下面各题,能简算的要简算.(34-18)÷51217×613+813×1756÷89÷13813÷7+17×51320-79÷7815×8÷45.-数学

题目简介

计算下面各题,能简算的要简算.(34-18)÷51217×613+813×1756÷89÷13813÷7+17×51320-79÷7815×8÷45.-数学

题目详情

计算下面各题,能简算的要简算.
(
3
4
-
1
8
5
12
1
7
×
6
13
+
8
13
×
1
7
5
6
÷
8
9
÷
1
3
8
13
÷7+
1
7
×
5
13
20-
7
9
÷
7
8
1
5
×8÷
4
5
题型:解答题难度:中档来源:不详

答案

(1)(class="stub"3
4
-class="stub"1
8
÷class="stub"5
12

=class="stub"5
8
÷class="stub"5
12

=class="stub"3
2


(2)class="stub"1
7
×class="stub"6
13
+class="stub"8
13
×class="stub"1
7

=(class="stub"6
13
+class="stub"8
13
)×class="stub"1
7

=class="stub"14
13
×class="stub"1
7

=class="stub"2
13


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

=class="stub"8
13
×class="stub"1
7
+class="stub"1
7
×class="stub"5
13

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

=1×class="stub"1
7

=class="stub"1
7


(4)20-class="stub"7
9
÷class="stub"7
8

=20-class="stub"8
9

=19class="stub"1
9

更多内容推荐