口算.5.6÷0.07= 0.02×25= 6÷1.2= 2.5×0.6= 12.5×8=0.02×0.1= 6.3÷0.7= 0.18+0.72= 0.8×0.5= 99+0.1﹦42= 0.12= 0.08×10= 1÷0.125= 1÷0.01=1﹣0.02= 43×0.01﹦ 4.2÷2.1= 1.8÷0.18= 1.03﹣0.9=
简便计算 125×64﹣24×64﹣6419+21+23+…+49+51 (25+19)×499999×26+33333×22 25×125×32 102×88 9000÷25÷4 99×46.
简算: 3.14×9919.25﹣0.47﹣8.531.25×0.03×8720÷45.
470÷2.5÷40.
0.8××1.25×4.
752×1.25+4.45×12.5+0.035×125.