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(2011•高邮市模拟)简便运算.198-(98+37)74×12.5×57×8716×40-516÷140.

题目详情
(2011•高邮市模拟)简便运算.
198-(98+37 )      
7
4
×12.5×
5
7
×8     
7
16
×40-
5
16
÷
1
40


7
4
×12.5×
5
7
×8     
7
16
×40-
5
16
÷
1
40
7
4
7744
5
7
×8     
7
16
×40-
5
16
÷
1
40
5
7
5577
7
16
×40-
5
16
÷
1
40
7
16
771616
5
16
÷
1
40
5
16
551616
1
40
1
40
114040
▼优质解答
答案和解析
(1)198-(98+37 )
=198-98-37,
=100-37,
=63;

(3)
7
4
×12.5×
5
7
×8
=(
7
4
×
5
7
)×(12.5×8),
=
5
4
×100,
=125;

7
16
×40-
5
16
÷
1
40

=
7
16
×40-
5
16
×40,
=(
7
16
5
16
)×40,
=
1
8
×40,
=5.
7
4
777444×12.5×
5
7
×8
=(
7
4
×
5
7
)×(12.5×8),
=
5
4
×100,
=125;

7
16
×40-
5
16
÷
1
40

=
7
16
×40-
5
16
×40,
=(
7
16
5
16
)×40,
=
1
8
×40,
=5.
5
7
555777×8
=(
7
4
×
5
7
)×(12.5×8),
=
5
4
×100,
=125;

7
16
×40-
5
16
÷
1
40

=
7
16
×40-
5
16
×40,
=(
7
16
5
16
)×40,
=
1
8
×40,
=5.
7
4
777444×
5
7
)×(12.5×8),
=
5
4
×100,
=125;

7
16
×40-
5
16
÷
1
40

=
7
16
×40-
5
16
×40,
=(
7
16
5
16
)×40,
=
1
8
×40,
=5.
5
7
555777)×(12.5×8),
=
5
4
×100,
=125;

7
16
×40-
5
16
÷
1
40

=
7
16
×40-
5
16
×40,
=(
7
16
5
16
)×40,
=
1
8
×40,
=5.
5
4
555444×100,
=125;

7
16
×40-
5
16
÷
1
40

=
7
16
×40-
5
16
×40,
=(
7
16
5
16
)×40,
=
1
8
×40,
=5.
7
16
777161616×40-
5
16
÷
1
40

=
7
16
×40-
5
16
×40,
=(
7
16
5
16
)×40,
=
1
8
×40,
=5.
5
16
555161616÷
1
40

=
7
16
×40-
5
16
×40,
=(
7
16
5
16
)×40,
=
1
8
×40,
=5.
1
40
111404040
=
7
16
×40-
5
16
×40,
=(
7
16
5
16
)×40,
=
1
8
×40,
=5.
7
16
777161616×40-
5
16
×40,
=(
7
16
5
16
)×40,
=
1
8
×40,
=5.
5
16
555161616×40,
=(
7
16
5
16
)×40,
=
1
8
×40,
=5.
7
16
777161616−
5
16
555161616)×40,
=
1
8
×40,
=5.
1
8
111888×40,
=5.