直接写得数.4.7+0.53= 6.4÷0.32= 0.2×1.4= 5÷0.5=4.9÷10= 3.6÷2.5÷0.4= 4.8﹣1.8÷3= 1.6×0÷0.8=5.4+2.6﹣5.4+2.6= 3.6﹣1.9﹣1.1=
下面各题怎样算简便就怎样算. 36×1990.54×1.75+8.25×0.542.5﹣÷﹣÷.
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%÷.