四年级数学下册简便计算期末专项练习班级：姓名：398×2544×25310×10155×102125×48125×560.69×4.2+0.69×5.8（8+0.8）×1.254.95+12.08﹣5.3715×9.4﹣4.262.8+2.02×9.50.25×3.8×0.461×38﹣38×39101×74﹣74640÷5÷4÷8=38×4+38×5+38125×32×125810﹣365﹣1358×16×25×12589×88+11×88472×6+28×67.29﹣3.7+1.71﹣6.369×58+69×42145×101﹣14525×125×3288×99+8832×25+47×25+21×25960×46÷4694+38+106+6246×53﹣46+46×48125×23×825×32×125125÷25×8765﹣186﹣148500÷25÷499×37+3778×78﹣78×6825×5+74×5+56.74+12.62+24.38+3.2687﹣6.123﹣3.87730.65﹣（7.65+5.9）56×38+56×62（40+8）×2569×98+69×23.63﹣1.25+17.37﹣8.7573×101﹣7325×294×45000÷125÷87.75×1.25×892.3×99+92.32.5×32×0.125