问题 解答题
计算,能简算的要简算.
125×32×25101×87-8756×67+33×56
9+4.98+1.02+21.113.05+12.38-4.0524.52-(7.5+4.52)
答案

(1)125×32×25,

=125×(8×4)×25,

=(125×8)×(4×25),

=1000×100,

=100000;

(2)101×87-87,

=(101-1)×87,

=100×87,

=8700;

(3)56×67+33×56,

=56×(67+33),

=56×100,

=5600;

(4)9+4.98+1.02+21.1,

=(4.98+1.02)+(9+21.1),

=6+30.1,

=36.1;

(5)13.05+12.38-4.05,

=(13.5-4.05)+12.38,

=9+12.38,

=21.38;

(6)24.52-(7.5+4.52),

=24.52-4.52-7.5,

=20-7.5,

=12.5.

单项选择题
单项选择题