下列说法正确的是( )
101×125=( )
当a为( )时,a×(+)运用乘法分配律计算简便.A.7 B.12 C.71
101×57=( )A.100×57+57 B.100×57﹣57 C.(100+1)×57﹣57
56+72+28=56+(72+28)运用了( )
3.6×10.1=( )A.3.6×10+0.1 B.3.6×10+3.6×1 C.3.6×10+3.6×0.1