2.1乘99+3.7乘33怎样简便计算
问题描述:
2.1乘99+3.7乘33怎样简便计算
答
2.1乘99+3.7乘33
=2.1×(3×33)+3.7×33
=(2.1×3)×33+3.7×33
=6.3×33+3.7×33
=33×(6.3+3.7)
=33×10
=330