Instructions
- Read the instructions for each section carefully.
- Show your work in the space provided. This helps you track your steps!
- Use the examples to guide you. Remember, "percent" means "out of 100."
- Try the Challenge Zone at the end for an extra test of your skills.
Handy Hint: To find the percentage of a number, you can turn the percentage into a decimal and then multiply. Example: 25% of 80 is the same as 0.25 x 80 = 20.
Part 1: Quick Calculations
Calculate the value for each question.
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What is 50% of 120?
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What is 25% of 60?
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What is 10% of 250?
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What is 75% of 400?
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What is 20% of 90?
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What is 5% of 600?
Part 2: Price Changes - Increase & Decrease
Complete the table below. First, calculate the amount of change (the percentage of the original amount). Then, add it to (for an increase) or subtract it from (for a decrease) the original amount to find the new total.
| Original Amount | Change | Amount of Change (Show Work) | New Amount |
|---|---|---|---|
| Example: $80 | Increase +25% | $80 x 0.25 = $20 | $80 + $20 = $100 |
| $150 | Decrease -30% | ||
| $60 | Increase +15% | ||
| $2,000 | Decrease -5% | ||
| $45 | Increase +20% | ||
| $500 | Decrease -50% |
Part 3: Discount Detective Challenges
Solve the following real-world problems. Be sure to show your steps.
Scenario 1: The Video Game Sale
A new video game costs $60. This week, it's on sale for 20% off. How much does the game cost now?
Step 1: Find the discount amount.
Step 2: Subtract the discount from the original price.
Final Price: ____
Scenario 2: The Sneaker Purchase
You want to buy a pair of sneakers that originally cost $110. They are on sale with a 30% discount. However, you must also pay a 10% sales tax on the discounted price. What is the final total you will pay?
Hint: Calculate the discount first, then calculate the tax on the new, lower price.
Final Total: ____
Scenario 3: The Restaurant Tip
Your family's dinner bill comes to $75. You want to leave a 15% tip for the great service. How much money should you leave for the tip? What is the total cost of the dinner including the tip?
Tip Amount: ____
Total Cost: ____
Part 4: Challenge Zone
Read the scenario and determine the best deal. Explain your reasoning.
You want to buy a new jacket that costs $120. You have two coupons you can use, but you can only choose one.
- Coupon A: 25% off the total price.
- Coupon B: $35 off the total price.
Which coupon gives you a better deal? By how much?
The better deal is: ____
Answer Key
Part 1: Quick Calculations
- 60
- 15
- 25
- 300
- 18
- 30
| Part 2: Price Changes - Increase & Decrease | Original Amount | Change | Amount of Change (Show Work) | New Amount |
|---|---|---|---|---|
| Example: $80 | Increase +25% | $80 x 0.25 = $20 | $80 + $20 = $100 | |
| $150 | Decrease -30% | $150 x 0.30 = $45 | $105 | |
| $60 | Increase +15% | $60 x 0.15 = $9 | $69 | |
| $2,000 | Decrease -5% | $2,000 x 0.05 = $100 | $1,900 | |
| $45 | Increase +20% | $45 x 0.20 = $9 | $54 | |
| $500 | Decrease -50% | $500 x 0.50 = $250 | $250 |
Part 3: Discount Detective Challenges
- Scenario 1: Discount is $60 x 0.20 = $12. Final price is $60 - $12 = $48.
- Scenario 2: Discount is $110 x 0.30 = $33. Sale price is $110 - $33 = $77. Tax is $77 x 0.10 = $7.70. Final total is $77 + $7.70 = $84.70.
- Scenario 3: Tip amount is $75 x 0.15 = $11.25. Total cost is $75 + $11.25 = $86.25.
Part 4: Challenge Zone
- Coupon A: Discount is $120 x 0.25 = $30. The final price is $90.
- Coupon B: The discount is a flat $35. The final price is $120 - $35 = $85.
- The better deal is Coupon B. It saves you $5 more than Coupon A ($90 - $85 = $5).