问题 解答题
计算下面各题,能简便计算的要求简便计算.
(480+240)÷24-12(480+240)÷(24-12)(197+243)÷22×6
158+36+42+264258×12-58×1225×64×125.
答案

(1)(480+240)÷24-12,

=720÷24-12,

=30-12,

=18;

(2)(480+240)÷(24-12),

=720÷12,

=60;

(3)(197+243)÷22×6,

=440÷22×6,

=20×6,

=120;

(4)158+36+42+264,

=(158+42)+(36+264),

=200+300,

=500;

(5)258×12-58×12,

=(258-58)×12,

=200×12,

=2400;

(6)25×64×125,

=25×8×8×125,

=(25×8)×(8×125),

=200×1000,

=200000.

单项选择题
单项选择题