3.7*0.25+6.3/4,用簡便算灋計算

3.7*0.25+6.3/4,用簡便算灋計算

3.7*0.25+6.3/4
=3.7x0.25+6.3x0.25
=(3.7+6.3)x0.25
=10x0.25
=2.5