问题 解答题
计算(怎样简便就怎样计算)
25+12×8168×25×439.5+98.8(竖式计算并用加法交换律验算)
32×87+13×3211.26-6.37-4.63(101-98)×44÷12.
答案

(1)25+12×8,

=25+96,

=121;

(2)168×25×4,

=168×(25×4),

=168×100,

=16800;

(3)39.5+98.8=138.3;

(4)32×87+13×32,

=(87+13)×32,

=100×32,

=3200;

(5)11.26-6.37-4.63,

=11.26-(6.37+4.63),

=11.26-11,

=0.26;

(6)(101-98)×44÷12,

=3×44÷12,

=132÷12,

=11.

判断题
填空题