脱式计算:306×15-2080910-13÷12+563.5×(20.6-16.8÷4.8)(79+23×56)÷41545×[7-4÷(215+23)].-数学

题目简介

脱式计算:306×15-2080910-13÷12+563.5×(20.6-16.8÷4.8)(79+23×56)÷41545×[7-4÷(215+23)].-数学

题目详情

脱式计算:
306×15-2080
9
10
-
1
3
÷
1
2
+
5
6

3.5×(20.6-16.8÷4.8)
(
7
9
+
2
3
×
5
6
4
15

4
5
×[7-4÷(
2
15
+
2
3
)]
题型:解答题难度:中档来源:不详

答案

(1)306×15-2080
=4590-2080,
=2510;

(2)class="stub"9
10
-class="stub"1
3
÷class="stub"2
3
+class="stub"5
6

=class="stub"9
10
-class="stub"1
2
+class="stub"5
6

=class="stub"37
30


(3)3.5×(20.6-16.8÷4.8)
=3.5×(20.6-3.5),
=3.5×17.1,
=59.85;

(4)(class="stub"7
9
+class="stub"2
3
×class="stub"5
6
)÷class="stub"4
15

=(class="stub"7
9
+class="stub"5
9
)÷class="stub"4
15

=class="stub"4
3
×class="stub"15
4

=5;

(5)class="stub"4
5
×[7-4÷(class="stub"2
15
+class="stub"2
3
)]
=class="stub"4
5
×[7-4×class="stub"15
12
],
=class="stub"4
5
×[7-5],
=class="stub"4
5
×2,
=class="stub"8
5

更多内容推荐