四年级35×68+68+68×64和800÷25用简便算法怎么算?

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四年级35×68+68+68×64和800÷25用简便算法怎么算?四年级35×68+68+68×64和800÷25用简便算法怎么算?四年级35×68+68+68×64和800÷25用简便算法怎么算?3

四年级35×68+68+68×64和800÷25用简便算法怎么算?
四年级35×68+68+68×64和800÷25用简便算法怎么算?

四年级35×68+68+68×64和800÷25用简便算法怎么算?
35x68+68x68x64
=68x(35+1+64)
=68x100
=6800
800÷25
=8x100÷25
=8x4
=32

35X68+68+68X64
=(35+64+1)X68
=100X68
=6800
800÷25
=(800X4)÷(25X4)
=3200÷100
=32

35×68+68×64
=68×(100-1)
=68×100-68×1
=6800-68
=6732
800÷25
=100×8÷25
=4×8
=32