What is the decimal fraction of the shaded squares in a 10x10 grid where all squares are shaded blue?

The grid has 10 rows and 10 columns.
Total number of squares = $10 \times 10 = 100$.

All the squares in the grid are shaded blue.
Number of shaded squares = 100.

The fraction of shaded squares is the number of shaded squares divided by the total number of squares.

To convert the fraction $\frac{100}{100}$ to a decimal, divide the numerator by the denominator.

The decimal fraction is $\text{1.00}$.