2.1乘99+3.7乘33怎样简便计算

题目

2.1乘99+3.7乘33怎样简便计算

答案

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