简便计算 4.8×7.8+78×0.52
问题描述:
简便计算 4.8×7.8+78×0.52
答
4.8×7.8+78×0.52= 0.48×78+78×0.52=78x(0.48+0.52)=78x1=78
简便计算 4.8×7.8+78×0.52
4.8×7.8+78×0.52= 0.48×78+78×0.52=78x(0.48+0.52)=78x1=78