3.17+7.48-2.78+0.53-3.48-1.02+5.3
7.48+3.17-(2.48-6.83) 简算!
5.3×10.1-0.53 简算
4.7×5.3-0.53×37简便计算
7.48+3.17-(2.48-6.83) 7.6x7/4+17.5x6/25 1333305/2x88+880x133
2.83,3.32,2.75,3.17,2.58,2.65,2.78,3.24,3.29,3.41,3.26,2.98,
3.17*0.76+3.17*0.
7.48*369369-3.69*748748
2.78*7.8+2.78*3.2-2.78的简便计算
3.17乘2.58加3.17乘7.42
99乘3.17+3.17等于?简便算法
7.48*369369-3.69*748748________________________________.
198/2*3.48+3.48用简便方法计算