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脱式计算,能简便的用简便方法计算.1÷[710×(1-47)](124+37.5%)×481.25×5.88+8.75×5.8889-47+109-37.

题目详情
脱式计算,能简便的用简便方法计算.
1÷[
7
10
×(1-
4
7
)]
1
24
+37.5%)×48
1.25×5.88+8.75×5.88
8
9
-
4
7
+
10
9
-
3
7
▼优质解答
答案和解析
①1÷[
7
10
×(1-
4
7
)]
=1÷[
7
10
×
3
7
]
=1÷
3
10

=
10
3


②(
1
24
+37.5%)×48
=
1
24
×48+37.5%×48
=2+18
=20

③1.25×5.88+8.75×5.88
=(1.25+8.75)×5.88
=10×5.88
=58.8

8
9
-
4
7
+
10
9
-
3
7

=(
8
9
+
10
9
)-(
4
7
+
3
7

=2-1
=1.