Number of beats in 15 seconds = ___. Now multiply this number by 4 to tell how many times your heart beats in one minute. Number of beats in 15 seconds ___ X 4 = ___ beats per minute. Now multiply this times 60 to tell how many times your heart beats in one hour. Number of beats in 1 minute = ___ X 60 = ___ beats per hour. Now multiply this times 24 to tell how many times your heart beats in one day. Number of beats in 1 hour = ___ X 24 = ___ beats per day.
