南津关小学五年级（上）数学竞赛姓名成绩一．直接写出得数。1.2÷3=0.48÷6=14×0.5=0.7×1.1=4.6÷23=6.8÷4=0.12×5=1÷0.125=0.25×4=0.72÷0.9=0.34÷1.7=2.73×0=28.5÷15=1.36×0.05=3.5×10﹦4.6÷100﹦100×0.9﹦1.5×6﹦0.2×0.5﹦9.6÷4﹦0.85－0.05﹦0.7＋0.23﹦42×0.3﹦0÷0.5﹦＋=2－=1－=－＋=－=＋=－=2.7+6.3=0.58+3.5=6-2.2=5.6-2.8=25×12=6.68-2.1=6.38+5.62=3.92-0.9=二．列竖式计算:3.49＋2.15=7.4－3.68=34.2×0.64＝3.9÷0.65=750.4÷0.56＝1.512÷0.36＝57.76÷15.2＝6.8×0.195＝验验算：算：三、解方程：x＋0.8x=362x+0.4x=7.2x－0.25x=12.5四、计算下面各题，怎样简便就怎样算。0.89×4.8＋0.89×5.22.5×32×1.254.2×1013.6×990.125×8856.5×99＋56.545÷0.2÷0.517.8÷(1.78×4)2.9＋0.46＋7.1＋0.541.4÷4＋1.6×2.54.97×[2.46÷（5.58－5.28）]
