问题 解答题
简便计算.
83+83×99

87×46-46×77

38×102.
答案

(1)83+83×99,

=83×(99+1),

=83×100,

=8300;

(2)87×46-46×77,

=(87-77)×46,

=10×46,

=460;

(3)38×102,

=38×(100+2),

=38×100+38×2,

=3800+76,

=3876.

单项选择题
单项选择题