6.8*7.7+68*0.23=?

6.8*7.7+68*0.23=? 0.68×48 68×0.23 6.8×2.9的简便方法 63×0.23+6.3×7.7 用简算 4.8*0.23+0.48*7.7怎么简便计算 7.7*0.9+9*0.23简便方法怎么算? 找规律 0.3 7.7 0.5 7.4 0.7 ( ) ( ) 6.8 1.1 5.98÷0.23=? 简便计算.6.8＋9.9×68 ＝ 求解(1+0.12+0.23)*(0.12+0.23+0.34)-(1+0.12+0.23+0.34)*(0.12+0.23)=? (1+0.12+0.23)*(0.12+0.23+0.34)-(1+0.12+0.23+0.34)*(0.12+0.23)= (1+0.12+0.23)X(0.12+0.23+0.34)-(1+0.12+0.23+0.34)X(0.12+0.23)=? 68×0.99 7.2×1.02 3.72-【1.72＋1.3】 7.7×7＋7.7＋2×7.7 简便计算. 7.7g/立方厘米*50.2厘米*2.4厘米*0.23厘米等于多少 x-0.23x=1.54, 117.8/2.3-4.88/0.23=? 不规则四边形上底6.8下底7.7两边分别为6.2和6.8,求四边形面积 （1+0.12+0.23）*（0.12+0.23+0.34）-（1+0.12+0.23+0.34）*（0.12+0.23）=简便方法 25×6.8=?竖式