直接写得数.0.9×6= 7×0.08= 1.92×102=0.25×2= 4×0.25= 60×0.8=1.6×5= 1.4×0.3= 0.13×6=
用简便方法计算下面各题.3.06﹣2.5+1.94 3.8+3.98+6.02 9.53﹣(4.53+2.4)76﹣9.36﹣30.64 2.29+3.7+6.71+6.3 3.25﹣0.13﹣1.25﹣0.87.
用简便方法计算.201×24 37×99+37 125×(7×8) 25×7×5×4.
99×38=100×38﹣38 .
怎样简便怎样计算:(1)31.2×91+3.12×90 (2)0.25×3.2×12.5 (3)2.95×101﹣2.95(4)89×100.1 (5)99÷0.25÷0.4 (6)35.6﹣6×1.73.
简便计算99﹣9.9÷0.25÷0.4; 101×0.59;(+﹣)÷.