16可以写成4x4,所以是(25x4)x(25x4)=100x100=10000
化为(25X4)X(25X4)=100X100=10000
25×25×16=25×25×4×4=(25×4)×(25×4)=100×100=10000
25×25×16=25x4x25x4=100x100=10000