计算(怎样简便就怎样计算) 25+12×8 168×25×4 39.5+98.8(竖式计算并用加法交换律验算) 32×87

2024-11-01 11:27:15
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网友(1):

(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.