7.25乘0.35减72.5乘0.025的简便计算
7.25x0.35-72.5x0.025?？
=7.25*【0.35-0.25】7.25*0.1 =0.725
=7.25x(0.35-0.25)=7.25x0.1 =0.725
=7.25*【0.35-0.25】7.25*0.1 =0.725
=7.25x(0.35-0.25)=7.25x0.1 =0.725
7.25*0.35-72.5*0.025=7.25*0.35-7.25*0.25=7.25*（0.35-0.25）0.725
解🦒🦄_🌑🎃：原式=72.5x0.035-72.5x0.025 =72.5x（0.035-0.025）72.5x0.01 =0.725 分析*🎄_🐯：主要考察提取公因式的简便方法🐂|_🦗🦌。
7.25*0.35-72.5*0.025?？
7.25*0.35-72.5*0.025=7.25*0.35-7.25*0.25=7.25*（0.35-0.25）7.25*0.1=0.725
7.25x0.35+72.5x0.025的简便计算=7.25x0.35+7.25x0.25 =7.25x（0.35+0.25）7.25x0.6 =4.35
72.5x0.035-7.25x0.25的简便计算??？
=72.5×(0.035-0.025) =72.5×0.01 =0.725 通过观察可以看出😤😤__🌺，原式中72.5x0.035和7.25x0.25的公约数是72.5,提取公约数72.5后🦙♦_🦤👹，7.25x0.25可以换做72.5×0.025,而且0.035-0.025=0.01,所以提取公约数后计算更为简便🐊😉_|🌧，即运用乘法分配律计算😊😄_|*🐡。乘法分配律😣--🤐🐂： 两个数的和(或差)与一个数相乘🥇🌨|*😙，可以把两个加数(或被减数🐔😃——_🐝🤒、减有帮助请点赞🐖😀-🧧。
7.25*0.35-72.5*0.025简便计算 7.25*0.35-72.5*0.025=7.25*0.35-7.25*0.25=7.25*（0.35-0.25）0.725 7.25x0.35的简便计算 =(7+0.25)×0.35 =7×0.35+0.25×0.35 =2.45+0.0875 =2.3375 4.6减2.147减7.25简便计算 4.6-2.147-7.25 =4+0好了吧🤒_-🐚🥉！
7.25×2.28+72.5×0.72简便计算?？
7.25×2.28+72.5×0.72 ＝7.25×（2.28+0.72）＝7.25×3 ＝21．75
7.25x10.1-0.725 =7.25x(10.1-0.1)=72.5 结果为72.5