2.8÷100= 2.6÷0.02= 5.7÷1.9= 9.6÷6=
7÷5= 0.48÷0.16= 0.24×5= 0÷0.05=
1-0.64= 3.7+2.3= 4.2-0.8= 2.8×1000=
321÷100= 1.4×0.3= 1.25×0.8= 2.4×5=