一年级奥数题及答案:数方块3
(1)31+32+33+34+35+15+16+17+18+19=
(2)2+13+25+44+18+37+56+75=
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(1)31+32+33+34+35+15+16+17+18+19=250
(2)2+13+25+44+18+37+56+75=270