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计算下面各题,能简算的要简算.20×712+4×71258÷14+4×3823.6×10%+13.6×910%(12-14)×34×8.

题目详情
计算下面各题,能简算的要简算.
20×
7
12
+4×
7
12
5
8
÷
1
4
+4×
3
8
23.6×10%+13.6×910%
1
2
-
1
4
)×
3
4
×8.
▼优质解答
答案和解析

(1)20×
7
12
+4×
7
12

=(20+4)×
7
12

=24×
7
12

=14;

(2)
5
8
÷
1
4
+4×
3
8

=
5
8
×4+4×
3
8

=(
5
8
+
3
8
)×4,
=1×4,
=4;

(3)23.6×10%+13.6×910%,
=2.36+123.76,
=126.12;

(4)(
1
2
-
1
4
)×
3
4
×8,
=
1
4
×
3
4
×8,
=
3
2