44/9÷1/5+46/9×5又3/23 简便运算和1999/2000*1999
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![44/9÷1/5+46/9×5又3/23 简便运算和1999/2000*1999](/uploads/image/z/752010-42-0.jpg?t=44%2F9%C3%B71%2F5%EF%BC%8B46%2F9%C3%975%E5%8F%883%2F23+%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97%E5%92%8C1999%2F2000%2A1999)
44/9÷1/5+46/9×5又3/23 简便运算和1999/2000*1999
44/9÷1/5+46/9×5又3/23 简便运算
和1999/2000*1999
44/9÷1/5+46/9×5又3/23 简便运算和1999/2000*1999
44/9÷1/5+46/9×5又3/23
=44/9×5+46/9×5+46/9×3/23
=(44/9+46/9)×5×5+2/3
=10×5+2/3
=50+2/3
=50又2/3
1999/2000*1999
=(1-1/2000)×1999
=1999-1/2000×1999
=1999-1999/2000
=1998又1/2000