问题
填空题
37+39+53+63的简便算法是______.
答案
37+39+53+63
=37+63+39+51+2,
=(37+63)+(39+51)+2,
=100+90+2,
=190+2,
=192.
故答案为:192.
37+39+53+63的简便算法是______.
37+39+53+63
=37+63+39+51+2,
=(37+63)+(39+51)+2,
=100+90+2,
=190+2,
=192.
故答案为:192.