5025 -2100÷28×27简便计算
问题描述:
5025 -2100÷28×27简便计算
答
5025 -2100÷28×27
=5025-2100÷7÷4×27
=75×67-75×27
=75×(67-27)
=75×40
=3000
答
5025 -2100÷28×27
=5025 -75×27
=25×201-25×3×27
=25×(201-3×27)
=25×120
=3000