Lisa was 4 feet 10 1/2 inches tall at the end of fifth grade. During the year, she had grown 2 3/4 inches. How tall was Lisa at the start of fifth grade?

4 feet 10 and 1/2 - 2 3/4, so we make 1/2 3/2 with a whole added, then change it to 6/4, and equivalent fraction so we have 6/4 - 3/4, which equals 3/4, then for the 10 inches, you do minus three, because you took that extra one away, and you get 4 feet and 7 3/4 inches

2feet 2/3 inches tall