0.1×0.1+0.020.2×0.2+0.01=?\frac{0.1\times0.1+0.02}{0.2\times0.2+0.01}=?0.2×0.2+0.010.1×0.1+0.02=?
0.2×0.2+0.2×0.020.044=?\frac{0.2\times0.2+0.2\times0.02}{0.044}=?0.0440.2×0.2+0.2×0.02=?