문제 1선택형25+15\frac25+\frac1552+51 = ?15\frac155125\frac255235\frac355345\frac4554
문제 2선택형611+311\frac{6}{11}+\frac{3}{11}116+113=?811\frac{8}{11}118911\frac{9}{11}1191011\frac{10}{11}11101111\frac{11}{11}1111
문제 3선택형114+124=?1\frac14+1\frac24=?141+142=?34\frac34431341\frac341432342\frac342433343\frac34343
문제 4선택형115+335=?1\frac15+3\frac35=?151+353=?4454\frac454543453\frac453544354\frac354533453\frac45354