Printable sales tax calculation worksheet for students to practice calculating total prices including tax.

To solve the problem, we need to calculate the total price for each item on the receipts, determine the subtotal, compute the sales tax amount, and then find the total. Let's break it down step by step.

Step 1: Understand the Sales Tax Rate

The worksheet mentions a "Sales Tax Rate," but it is not provided in the image. For the sake of this example, let's assume a common sales tax rate of 8% (0.08 as a decimal). If the actual rate is different, you can adjust the calculations accordingly.

Step 2: Solve Receipt #1

#### Items and Prices:
1. Retro Pencils: $2.50 × 1 = $2.50
2. Prisma Sharpener: $0.50 × 1 = $0.50
3. 6-Color Pen: $0.75 × 2 = $1.50
4. Dessert Eraser: $0.15 × 2 = $0.30

#### Subtotal Calculation:
\[
\text{Subtotal} = 2.50 + 0.50 + 1.50 + 0.30 = 4.80
\]

#### Sales Tax Amount:
\[
\text{Sales Tax Amount} = \text{Subtotal} \times \text{Sales Tax Rate} = 4.80 \times 0.08 = 0.384 \approx 0.38
\]

#### Total Calculation:
\[
\text{Total} = \text{Subtotal} + \text{Sales Tax Amount} = 4.80 + 0.38 = 5.18
\]

Step 3: Solve Receipt #2

#### Items and Prices:
1. Red Silkscreen Pencil: $0.25 × 4 = $1.00
2. Mouse Sharpener: $0.50 × 3 = $1.50
3. Cudham Clock: $0.35 × 1 = $0.35
4. Mechanical Pencil: $0.35 × 2 = $0.70
5. Bucket Pen: $0.40 × 2 = $0.80

#### Subtotal Calculation:
\[
\text{Subtotal} = 1.00 + 1.50 + 0.35 + 0.70 + 0.80 = 4.35
\]

#### Sales Tax Amount:
\[
\text{Sales Tax Amount} = \text{Subtotal} \times \text{Sales Tax Rate} = 4.35 \times 0.08 = 0.348 \approx 0.35
\]

#### Total Calculation:
\[
\text{Total} = \text{Subtotal} + \text{Sales Tax Amount} = 4.35 + 0.35 = 4.70
\]

Final Answers:

#### Receipt #1:
- Subtotal: $4.80
- Sales Tax Amount: $0.38
- Total: $5.18

#### Receipt #2:
- Subtotal: $4.35
- Sales Tax Amount: $0.35
- Total: $4.70

Boxed Final Answers:

\[
\boxed{
\begin{array}{l}
\text{Receipt #1:} \\
\text{Subtotal: } \$4.80 \\
\text{Sales Tax Amount: } \$0.38 \\
\text{Total: } \$5.18 \\
\\
\text{Receipt #2:} \\
\text{Subtotal: } \$4.35 \\
\text{Sales Tax Amount: } \$0.35 \\
\text{Total: } \$4.70 \\
\end{array}
}
\]