问题 解答题
简便运算
(
2
5
+
1
6
-
4
15
1
30

96×101
2.7×99+2.7×2-2.7.
答案

(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.

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