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简算.23×192258+62.5%×37+58×4756×911+56÷1113(34+47)×8×7.

题目详情
简算.
23×
19
22

5
8
+62.5%×
3
7
+
5
8
×
4
7

5
6
×
9
11
+
5
6
÷
11
13

3
4
+
4
7
)×8×7.
▼优质解答
答案和解析
①23×
19
22

=(22+1)×
19
22

=22×
19
22
+1×
19
22

=19+
19
22

=19
19
22


5
8
+62.5%×
3
7
+
5
8
×
4
7

=
5
8
×(1+
3
7
+
4
7
)
=
5
8
×2
=
5
4


5
6
×
9
11
+
5
6
÷
11
13

=
5
6
×(
9
11
+
13
11
)
=
5
6
×2
=
5
3


④(
3
4
+
4
7
)×8×7
=
3
4
×8×7+
4
7
×7×8
=42+28
=70.