如何用简便法计算63×48+52

分类: 作业答案 • 2021-12-28 14:49:44

问题描述：

如何用简便法计算63×48+52

答

63×48+52
=（60+3）×48+52
=60×48+3×48+52
=60×(50-2)+3×(50-2)+52
=60×50-60×2+3×50-3×2+52
=3000-120+150-6+52
=3076