198✖️108➖8✖️108怎么简便算
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=108×(198-8)
=108×190
=108×(200-10)
=108×200-108×10
=21600-1080
=21600-1000-80
=20600-80
=20520
=108×190
=108×(200-10)
=108×200-108×10
=21600-1080
=21600-1000-80
=20600-80
=20520
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