Cheryl ate 7 m&m's after lunch. She ate 5 m&m's after dinner, and she gave some to her sister. If Cheryl had 25 m&m's at the beginning, how many did she give to her sister?
Cheryl at 7 + 5 = <T>add(7, 5)=12 m&m's
She gave 25 - 12 = <T>subtract(25, 12)=13 m&m's to her sister.
