问题 解答题
简便计算.
(1)9.26-(4.38+2.26)
(2)52×76+47×76+76(3)
29
97
x99.
答案

(1)9.26-(4.38+2.26),

=9.26-(2.26+4.38),

=9.26-2.26-4.38,

=7-4.38,

=2.62;

(2)52×76+47×76+76,

=(52+47+1)×76,

=100×76,

=7600;

(3)

29
97
x99,

=

29
97
x(97+2),

=

29
97
x97+
29
97
x2,

=29+

58
97

=29

58
97

单项选择题 A1/A2型题
单项选择题