0.89﹣0.25= 1﹣0.98= 8.8﹣6.7= 5×400=
3.04+7.6= 1.23÷3= 0.4×0.06= 0÷1.89=
197+298= 3.6÷12= 1.25×80= 4.5×9+4.5=
0.8-0.35= 0.3×0.2= 0.8÷0.01= 0.7×0.7÷0.7×0.7=
0.07×0.8= 1.7×0.03= 0.16×0.5= 4.5×0.03=
0.72÷12= 5.2÷13= 0.7×1.1= 9.6÷0.6=
0÷3.68= 0.48÷0.03= 2.5×8= 2.33×0.2×5=
10÷0.01= 0.22+0.8= 3.5×0.4= 5÷9=
4÷0.25= 0÷19.8= 12.12÷0.6= 0.4×0.5÷0.5×0.4=