三さん分ぶんの二にを分数ぶんすうで表あらわす。
Sanbunno ni o bunsuu de arawasu.
To express two-thirds as a fraction.
分数ぶんすうの足たし算ざんと引ひき算ざんを学まなぶ。
Bunsuu no tashizan to hikizan o manabu.
To learn addition and subtraction of fractions.