题目内容

计算下面各题,怎样简便就怎样算.
(1)(125+
7
32
)×8
(2)
19
4
×20%+
19
4
×
4
5
(3)25×32×125
(4)99×
1
100
(5)[
3
4
×(122-21-1)÷
1
100
]
(6)
1
27
÷
4
5
×
125
2
×
4
5
×270.
(1)(125+
7
32
)×8,
=125×8+
7
32
×8,
=1000+1.75,
=1001.75;

(2)
19
4
×20%+
19
4
×
4
5

=
19
4
×(20%+
4
5
),
=
19
4
×1,
=
19
4


(3)25×32×125,
=25×(4×8)×125,
=(25×4)×(8×125),
=100×1000,
=100000;

(4)99×
1
100

=(100-1)×
1
100

=100×
1
100
-1×
1
100

=1-
1
100

=
99
100


(5)
3
4
×(122-21-1)÷
1
100

=
3
4
×100÷
1
100

=75÷
1
100

=7500;

(6)
1
27
÷
4
5
×
125
2
×
4
5
×270,
=
1
27
×
5
4
×
125
2
×
4
5
×270,
=125×5,
=625.
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