Question

6.28×55+5.5×37.2的简便计算？

Answer 1

把第一项改写成62.8*5.5，这样就可以提取公因数5.5，于是原式=5.5*（62.8+37.2）=5.5*100=550。

Answer 2

6.28X55+5.5X37.2
=62.8x5.5+5.5X37.2
=5.5X(62.8-37.2)
=5.5X100
=550

Answer 3

6.28*55+5.5*37.2=5.5*（6.28*10+37.2)=5.5*100=550

Answer 4

解6.28×55+5.5×37.2
62.8×5.5+5.5×37.2
5.5×(62.8+37.2)
5.5×100=550

Answer 5

6.28*55+5.5*37.2
=62.8*5.5+5.5*37.2
=5.5*（62.8+37.2）
=5.5*100
=550