0.25×65.4的蔽隐大简便运算结携李果宏竖为：16.350.25×65.4=0.25×(60+5+0.4)=0.25×60+0.25×5+0.25×0.4=15+1.25+0.1=16.35
0.25×65.4＝1/洞皮或握神4×65.4＝65.4÷4＝65.4÷2÷2＝32.7÷2＝纳伍16.35
0.25X65.4=6.54x2+0.654X5=13.08+3.27=16.35
