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题吧,嗯,就是题999×999+199956.7×23.4-567×1.26-108×4.67

题目详情
题吧,嗯,就是题
999×999+1999
56.7×23.4-567×1.26-108×4.67
▼优质解答
答案和解析
999×999+1999
=(1000-1)×999+1999
=1000×999 -999 +1000 +999
=(1000×999 +1000) +(999-999 )
=1000×(999 +1) +0
=1000×1000
=1000000
999×999+1999
=(1000-1)×999+1999
=999000-999+1999
=999000+(1999-999)
=999000+1000
=1000000
56.7×23.4-567×1.26-108×4.67
=567×(2.34-1.26)-108×4.67
=567×1.08-108×4.67
=108×(5.67-4.67)
=108