A-A+
计算下面各题 能简算的要用简便方法计算.①73.25+47+26.75+37②12.5×2.
问题详情
①73.25+
参考答案
①73.25+47+26.75+37,
=(73.25+26.75)+(47+37),
=100+1,
=101;
②12.5×2.5×32,
=(12.5×8)×(2.5×4),
=100×10,
=1000;
③1127×17+1627÷7,
=1127×17+1627×17,
=17×(1127+1627),
=17×1,
=17;
④23.2×15+33.8÷2.6,
=348+13,
=361;
⑤(45+14)÷73+710,
=(1620+520)×37+710,
=2120×37+710,
=920+1420,
=2320,
=1320;
⑥14÷(3-513-813),
=14÷[3-(513+813)],
=14÷[3-1],
=14×12,
=18.
考点:方法