All these percents can be represented in terms of rational number.Percent means dividing by 100.
1. 90 % =[tex]\frac{90}{100}=\frac{9}{10}[/tex]→→→Draw 10 rectangles or squares , and color 9 of them only.
2. 0.9 % = [tex]\frac{0.9}{100}=\frac{9}{1000}[/tex] →→Draw 1,000 rectangles or squares and color only 9 rectangles or squares.
3. 900 % = [tex]\frac{900}{100}=9[/tex]→→ 9 different things
4. [tex]\frac{9}{10}[/tex]%=[tex]\frac{9}{100\times 10}=\frac{9}{1000}[/tex]→→→Draw 1000 rectangles or squares and color 9 of it.