=(100x24)x(29x10)
=2400x290
=2400x(300-10)
=720000一24000
=696000
匿名回答于2024-06-08 21:19:05
=50Ⅹ21x29x4X5
=1050x29×20
=1050x580
=1050(500十80)
=525000十84000
=609000
该题的简便计算是先把84分解变成了21×4,然后用乘法分配律将50和21相乘等于l050,4和5相乘等于20,再把29和20相乘等于580,这时把580拆开来变成了500十80,最后用1050和(500+80)经过计算最终结果就是609000
匿名回答于2024-05-26 00:41:17