並前往https://www.snowmath.com/zh-tw/math/worksheets/2%E4%BD%8D%E6%95%B8%E5%8A%A0%E6%B3%95%EF%BC%8C3%E5%80%8B%E6%95%B8%E5%AD%97%E7%9B%B8%E5%8A%A0(25%E9%A1%8C)/addition-2-digit-vertical-3-25