用简便方法计算:65×15×85=

2025-06-26 18:20:04
推荐回答(3个)
回答1:

65x15x85
=65x(10+5)x85
=(65x10+65x5)x85
=(650+325)x85
=975x85
=975x(100-15)
=975x100-975x15
=97500-975x(10+5)
=97500-(975x10+975x5)
=97500-(9750+4875)
=97500-14625
=82875

回答2:

82875

回答3:

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