问题 解答题
计算下列各题(能简便的要简便)
49×49+49
(24×15-290)÷5271×24-24×171
88×12532×[168-(89+43)]1200÷25101×32.
答案

(1)49×49+49,

=49×(49+1),

=49×50,

=2450;

(2)(24×15-290)÷5,

=(24×5×3-290)÷5,

=(360-290)÷5,

=70÷5,

=14;

(3)271×24-24×171,

=(271-171)×24,

=100×24,

=2400;

(4)88×125,

=(8×11)×125,

=8×125×11,

=1000×11,

=11000;

(5)32×[168-(89+43)],

=32×[168-132],

=32×36,

=1152;

(6)1200÷25,

=(1200×4)÷(25×4),

=4800÷100,

=48;

(7)101×32,

=(100+1)×32,

=100×32+32,

=3200+32,

=3232.

单项选择题 共用题干题
单项选择题