用简便的方法计算.5.48+8.73+4.52+1.27 0.4×1.25×25×8 17.5-4.25-5.75 276×27÷27.6 9.25×

2024-11-25 08:32:09
推荐回答(1个)
回答1:

(陵猜裤1)5.48+8.73+4.52+1.27,
=(5.48+4.52)+(8.73+1.27),
=10+10,
=20;

(兆戚2)0.4×1.25×25×8,
=(0.4×25)×(1.25×8),
=10×10,
=100;

(3)17.5-4.25-5.75,
=17.5-(4.25+5.75),
=17.5-10,
=7.5;

(4)276×

2
7
÷27.6,尺简
=276÷27.6×
2
7

=10×
2
7

=
20
7


(5)9.25×9.9+92.5%,
=0.925×99+0.925,
=0.925×(99+1),
=0.925×100,
=92.5;

(6)
4
3
×
2
7
+
5
7
÷75%,
=
4
3
×
2
7
+
5
7
×
4
3

=
4
3
×(
2
7
+
5
7
),
=
4
3