用简便方法计算四年级下29x5x4怎么写

2024-11-07 08:45:28
推荐回答(3个)
回答(1):

29×5×4
=(25+4)×4×5
=25×4×5+4×5×4
=100×5+20×4
=500+80
=580

回答(2):

=29x(5X4)
=29x20
=580

回答(3):

=25x4x5
=100x5
=500