口算.8.6﹣4= 6.6+1.3= 0.7×10= 2.8÷100= 2.5×7×4=0÷234= 0.23+1.77= 9﹣0.1= 0.26×100= 9.3+4.5﹣7.3=
用简便方法计算下面各题. 1.8×5.46+1.8×4.540.65×2012.33×0.5×4 99×5.64.8×0.252.64+8.67+1.33﹣1.64.
用简便方法计算. ①1.25×0.25×32②0.25×3.78×4③6.74×10.1④0.85×99 ⑤6.8×3.7+6.8×6.3.
7.22×7.8+7.8×2.78.
用你喜欢的方法计算: 125×5×8×225×14×472×17+17×2867×101.
下面各题怎样计算简便就怎样算. 158+36+42+26419×27+190×5+19×23957﹣(158+457) 301×99 600÷12÷5(125×99+125)×16.