The problem requires expressing 18% in three ways: shading 18% of a grid, writing 18% as a decimal, and writing 18% as a simplified fraction. The grid has 100 squares, so each square represents 1%.

1. Problem Description

The problem requires expressing 18% in three ways: shading 18% of a grid, writing 18% as a decimal, and writing 18% as a simplified fraction. The grid has 100 squares, so each square represents 1%.

2. Solution Steps

First, shade 18 squares in the grid.

Second, convert the percentage to a decimal. To convert a percentage to a decimal, divide by

1

0

0. $18\% = \frac{18}{100} = 0.18$

Third, convert the percentage to a fraction in simplest form.

$18\% = \frac{18}{100}$. Simplify this fraction by dividing both the numerator and the denominator by their greatest common divisor, which is

2. $\frac{18}{100} = \frac{18 \div 2}{100 \div 2} = \frac{9}{50}$

3. Final Answer

18% as a decimal: 0.18

18% as a fraction in simplest form: $\frac{9}{50}$