85×(46+52)怎样用简便算法计算?

2024-11-22 14:34:31
推荐回答(1个)
回答1:

85x(46+52)

解:简便方法
=85x98
=85x(100-2)
=85x100-85x2
=8500-170
=8330

46乘52加53乘52加52
=52×(46+53+1)............................乘法分配律
=52×100
=5200