Question

99×41×130+90用简便计算怎么做？

Answer 1

99×41×130十90
=90×(11×41×13十1)
=90×[(12-1)×(12十1)×(40十1)十1]
=90×[(12²-1)×(40十1)十1]
=90×[12²×40-40十12²-1十1]
=90×[144×40-40十144]
=90×(143×40十144)
=90×(5720十144)
=5864×90
=527760

Answer 2

原式变为:
(100－1)x41ⅹ130+90
=533000－5330+90
=527760

Answer 3

99×41×130十90
=90×(11×41×13十1)
=90×[(12-1)×(12十1)×(40十1)十1]
=90×[(12²-1)×(40十1)十1]
=90×[12²×40-40十12²-1十1]
=90×[144×40-40十144]
=90×(143×40十144)
=90×(5720十144)
=5864×90
=527760

Answer 4

此题按顺序算。
99×41×130+90
=527670+90
=527760

Answer 5

99×41×130+90=527760
99×41=4059
4059×130=527670
527670+90=527760