1.3×2.8= 0.13×0.28= 13×2.8=
50.21×1.250.21 8.346÷2.148.346 9.8×5.960
0.63÷9= 4×0.25= 8.2+0.85= 10-0.1=
5.6÷0.7= 0.34÷0.1= 0.34×0.1= 27.5÷0.25=