35×68+68+68×64和800÷25用简便算法怎么算?
问题描述：
35×68+68+68×64和800÷25用简便算法怎么算?
答
35×68+68+68×64
=(35+1+64)×68
=100×68
=6800
800÷25
=(800×4)÷(25×4)
=3200÷100
=32