Question

53×89×47×89用简便方法计算

Answer 1

53×89×47×89的简便方法计算
53×89×47×89
=89×（53+47）
=89×100
=8900
53×89×47×89简便计算答案是8900

Answer 2

53*89*47*89
=(53*47)*(89²）
=(50+3)(50-3)(90-1)²
=(50²-3²)(8100-180+1)
=(2500-9)*(8001-80)
=2500*8001-2500*80-9*8001+9*80
=20002500-200000-72009+720
=19731211

Answer 3

53×89×47×89
=（50+3）x（50-3）x（90-1）x（90-1）
=（2500-9）x（8100-180+1）
=（2500-9）x(8000-80+1)
=2500x8000-2500x80+2500-9x8000+9x80-9
=20000000-200000+2500-72000+720-9
=20000000-272000+3220-9
=20000000-(272000-4000+780+9)
=20000000-268789
=20000000-300000+31211
=19731211

Answer 4

中间是“+”吧
53×89+47×89
=(53+47)×89
=100×89
=8900