Question

which expression can be represented by the model?
3×0.01
3×0.05
3×0.15
3×0.25

Explanation:

Step1: Count total grid cells

The grid is a 10x10 square, so total cells: $10 \times 10 = 100$

Step2: Count fully shaded blue cells

Each full blue block is 25 cells, 3 blocks total: $3 \times 25 = 75$

Step3: Find value of one blue block

Value of 25 cells out of 100: $\frac{25}{100} = 0.25$

Step4: Match to expression

3 groups of 0.25: $3 \times 0.25$

Answer:

$3 \times 0.25$