直接写得数1﹣0.55= 0.6×15= 2.5+0.25= 0.73÷3=0.8÷0.2= 1.25×4= 4.5÷9= 0.8×0.5=2.7÷0.09= 0÷1.9×2=
75+44+125+66+568×5×125×40 78×45+21×45+4535×98.
简便计算. 8.2×99+8.28.8×12.5 0.78×9.9 12.5×3.4×0.84.5×13.6+55×1.36.
简便运算 (1)4.38﹣2.85+3.62﹣5.15 (2)0.25×1.9×0.5×4.
用简便方法计算下面各题 25×1.25×3273.8×16﹣7.38×601.25+×0.4+125%÷.
简算: 18×10163×8+91×63+63 99×3525×32×125.