Final answer:
To calculate the fraction of the day Lauren practiced playing the piano, divide the duration of her practice by the total length of the day.
Step-by-step explanation:
To calculate the fraction of the day Lauren practiced playing the piano, you need to know the duration of her practice and the total length of the day. Let's say Lauren practiced for 2 hours. Since there are 24 hours in a day, the fraction of the day she practiced is 2/24, which can be simplified to 1/12. This means she spent 1/8th of the day playing the piano. So, the general procedure would be to divide the hours she spent playing by 24 (the total hours in a day) to get the desired fraction.
Learn more about Fraction of the day