28.67×67+573.4×0.05+3.2×286.7简便算
问题描述:
28.67×67+573.4×0.05+3.2×286.7简便算
答
28.67×67+573.4×0.05+3.2×286.7
=28.67×67+28.67×20×0.05+32×28.67
=28.67×(67+1+32)
=2867