简便运算 0.9×12.1 ÷1.1算式也要
问题描述：
简便运算 0.9×12.1 ÷1.1
算式也要
答
6.48÷0.9÷(3.3-2.7)=7.2/0.6=1.2 6.48÷[(3.3-2.7)×0.9] =6.48÷0.6÷0.9 =10.8÷0.9 =12 6.48×（0.9÷
答
=0.9×(12.1÷1.1)
=0.9*11
=9.9
答
= 0.9×(11×1.1) ÷1.1
= 0.9×11×(1.1 ÷1.1)
=9.9
答
原式=0.9×1.1×1.1 ÷1.1
=0.9×1.1
=（1-0.1）（1+0.1）
=1-0.01
=0.99