简便运算 ( 2 5 + 1 6 - 4 15 )÷ 1 30 96×1012.7×99+2.7

简便运算 ( 2 5 + 1 6 - 4 15 )÷ 1 30 96×1012.7×99+2.7×2-2.7.

(1)(
2
5
+
1
6
-
4
15
÷
1
30

=
2
5
×
30 +
1
6
×
30 -
4
15
×
30,
=12+5-8,
=9;

(2)96×101,
=96×100+96,
=9600+96,
=9696;

(3)2.7×99+2.7×2-2.7,
=2.7×(99+2-1),
=2.7×100,
=270.
温馨提示:答案为网友推荐,仅供参考