When the spectator in the courtroom pushes Mrs. Wendling after the "Sing Me an Old-Fashioned Tune" bit, the bench wobbles.
Betsy is sent back to the orphanage, and the girls are trying to cheer her up. When the girl with the glasses says, "And when you're sad as all that," her lips are not moving.
When the "Hot and Happy Four" are checking into the Hotel Variety, they agree to pay a year in advance at $40 per week. Mr. Wendling hands Mr. Shea a check and says "52 times 40 is 2,008." Mr Shea is pleased with this amount and Betsy even compliments him on his arithmetic. Captions verify the line. The error is that 52 x 40 = 2,080, not 2,008.
When Roger introduces Betsy to his aunt he calls her Betty instead of Betsy.