Convert fractions, decimals, and percentages to each other. Calculate percentages of amounts and solve word problems involving percentages.

Here are the solutions to the problems:

The first two questions involve shading shapes, which I cannot do directly. However, I can provide the numerical representations.

A half can be written...

• As a fraction: $\boxed{\frac{1}{2}}$
• As a decimal: $\boxed{0.5}$
• As a percentage: $\boxed{50\%}$

A quarter can be written...

• As a fraction: $\boxed{\frac{1}{4}}$
• As a decimal: $\boxed{0.25}$
• As a percentage: $\boxed{25\%}$

Complete the following:

• What is 80% of R1.00? $$80\% \text{ of R}1.00 = 0.80 \times \text{R}1.00 = \boxed{\text{R}0.80}$$
• What is 0.5 of R1.00? $$0.5 \times \text{R}1.00 = \boxed{\text{R}0.50}$$
• What is $\frac{1}{2}$ of R1.00? $$\frac{1}{2} \times \text{R}1.00 = 0.5 \times \text{R}1.00 = \boxed{\text{R}0.50}$$
• What is 25% of R1.00? $$25\% \text{ of R}1.00 = 0.25 \times \text{R}1.00 = \boxed{\text{R}0.25}$$
• What is 0.25 of R1.00? $$0.25 \times \text{R}1.00 = \boxed{\text{R}0.25}$$
• What is $\frac{1}{4}$ of R1.00? $$\frac{1}{4} \times \text{R}1.00 = 0.25 \times \text{R}1.00 = \boxed{\text{R}0.25}$$

Complete the following (Grade 6 children):

There are 120 children in grade 6.

• 30% of the children are boys. How many children are boys?