早教吧 育儿知识 作业答案 考试题库 百科 知识分享

脱式计算.(1)45×(67+43)(2)3.68÷4.6+6.32(3)72÷59×514(4)1.8×(4.7-3.87÷0.9)(5)15+(14-310×23)(6)36÷[(56-13)×3].

题目详情
脱式计算.
(1)45×(67+43) (2)3.68÷4.6+6.32 (3)
7
2
÷
5
9
×
5
14
(4)1.8×(4.7-3.87÷0.9) (5)
1
5
+(
1
4
-
3
10
×
2
3
(6)36÷[(
5
6
-
1
3
)×3].
▼优质解答
答案和解析
(1)45×(67+43)
=45×110
=4950;

(2)3.68÷4.6+6.32
=0.8+6.32
=7.12;

(3)
7
2
÷
5
9
×
5
14

=
7
2
×
9
5
×
5
14

=
9
4


(4)1.8×(4.7-3.87÷0.9)
=1.8×(4.7-4.3)
=1.8×0.4
=0.72;

(5)
1
5
+(
1
4
-
3
10
×
2
3

=
1
5
+(
1
4
-
1
5

=
1
5
-
1
5
+
1
4

=
1
4


(6)36÷[(
5
6
-
1
3
)×3]
=36÷[
1
2
×3]
=36÷
3
2

=24.