1. For the number 1.65 use two hundredths grids, one of them should be shaded almost in first color (that represent 1) and in second should be shaded 65 cells.
2. Take the first almost shaded grid and color in second color 98 cells, then two cells will left uncolored in second color.
3. Add remaining cells colored in first color, that will be 2+65=67.
4. Then the answer is 0.67.
