怎样算简便就怎样算 17.17-6.8-3.2; 16.8×10.1; 63.4÷2.5÷0.4; 2.74×9.5+5×0.274.

问题描述:

怎样算简便就怎样算
17.17-6.8-3.2;                              
16.8×10.1;
63.4÷2.5÷0.4;                      
2.74×9.5+5×0.274.

(1)17.17-6.8-3.2=17.17-(6.8+3.2)=17.17-10=7.17                         ...