121×0.18+12.1×0.9-17×1.21
1个回答
121×0.18+12.1×0.9-17×1.21
=12.1×1.8+12.1×0.9+1.7×12.1
=12.1×(1.9+0.9-1.7)
=12.1
相关问题
计算:121×0.13+12.1×0.9-12×1.21=______.
计算:121×0.13+12.1×0.9-12×1.21=______.
利用因式分解进行计算(过程)121×0.13+12.1×0.9-12×1.21
121*0.18+12.1*0.9-17*1.21
1/6×9+1/9×12+1/12×15+1/15×18+1/18×21+1/21×24(要用简便算法)
脱式计算(能简算的要简算)1.18×2.58+0.5+1.42×1.18 (21.85-17.5)×(0.45÷0.9)
计算: 1/1×5+1/5×9+1/9×13+1/13×17+1/17×21+1/21×25 456+979×455/4
9.8×65.2×1.25-12.5×0.652×18.
9.9×12.1-99×0.21可以简便计算吗?
用简便方法计算.(1)0.37×12.5×0.15×8×2(2)17.48×37-174.8×1.9+17.48×82(