기탄교육연구소
None
합이99까지의덧셈(세로셈)(받아올림이없는두자리수+한자리수)(받아올림이없는두자리수+두자리수)(받아올림이있는두자리수+한자리수)(받아올림이있는두자리수+두자리수)Additionofnumberswhosesumisupto99(Verticalformat)(2-digit+1-digit,withoutregrouping)(2-digit+2-digit,withoutregrouping)(2-digit+1-digit,withregrouping)(2-digit+2-digit,withregrouping)
*인증유형:공급자적합성확인
