69.2+69.2*99和480/96用简便运算怎么做,
问题描述:
69.2+69.2*99和480/96用简便运算怎么做,
答
69.2+69.2*99=69.2*(1+99)=69.2*100=6920
480/96=480/(48*2)=480/48/2=10/2=5