计算下面各题,能简算的要简算.23+15+45+134-511-61118×58+18×41+1845÷47×54-126÷310-310÷638×[(12+25)×23].-数学

题目简介

计算下面各题,能简算的要简算.23+15+45+134-511-61118×58+18×41+1845÷47×54-126÷310-310÷638×[(12+25)×23].-数学

题目详情

计算下面各题,能简算的要简算.
2
3
+
1
5
+
4
5
+
1
3
4-
5
11
-
6
11
1
8
×58+
1
8
×41+
1
8
4
5
÷
4
7
×
5
4
-
1
2
3
10
-
3
10
÷6
3
8
×[(
1
2
+
2
5
)×
2
3
].
题型:解答题难度:中档来源:不详

答案

(1)class="stub"2
3
+class="stub"1
5
+class="stub"4
5
+class="stub"1
3

=(class="stub"2
3
+class="stub"1
3
)+(class="stub"1
5
+class="stub"4
5
),
=1+1,
=2;

(2)4-(class="stub"5
11
+class="stub"6
11
),
=4-1,
=3;

(3)class="stub"1
8
×58+class="stub"1
8
×41+class="stub"1
8

=class="stub"1
8
×(58+41+1),
=class="stub"1
8
×100,
=12.5;

(4)class="stub"4
5
÷class="stub"4
7
×class="stub"5
4
-class="stub"1
2

=class="stub"4
5
×class="stub"5
4
×class="stub"7
4
-class="stub"1
2

=1×class="stub"7
4
-class="stub"1
2

=class="stub"7
4
-class="stub"1
2

=class="stub"5
4


(5)6÷class="stub"3
10
-class="stub"3
10
÷6,
=20-class="stub"1
20

=19class="stub"19
20


(6)class="stub"3
8
×[(class="stub"1
2
+class="stub"2
5
)×class="stub"2
3
],
=class="stub"3
8
×[class="stub"9
10
×class="stub"2
3
],
=class="stub"3
8
×class="stub"3
5

=class="stub"9
40

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