问题 解答题
怎样简便就怎样算.
189÷9+16×8

23×32+68×23

138×25×4
(168-18)×(32+18)23000÷125÷8199×47+47.
答案

(1)189÷9+16×8,

=21+128,

=149;

(2)23×32+68×23,

=23×(32+68),

=23×100,

=2300;

(3)138×25×4,

=138×(25×4),

=138×100,

=13800;

(4)(168-18)×(32+18),

=150×50,

=7500;

(5)23000÷125÷8,

=23000÷(125×8),

=23000÷1000,

=23;

(6)199×47+47,

=(199+1)×47,

=200×47,

=9400.

单项选择题
单项选择题