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35×68+68+68×64和800÷25用简便算法怎么算?
人气:359 ℃ 时间:2019-10-09 04:17:06
解答
35×68+68+68×64
=(35+1+64)×68
=100×68
=6800
800÷25
=(800×4)÷(25×4)
=3200÷100
=32
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