Math with Ms. Lee



Simple Interest: Round to the nearest cent (nearest hundredth) when necessary. Find the simple interest earned:Principal: $640, rate: 3%, time: 2 years Principal: $1,500, rate: 4.25%, time: 4 yearsPrincipal: $580, rate: 2%, time: 6 monthsPrincipal: $1,200, rate: 3.9%, time: 8 monthsMonica deposit $450 into an account that earns simple interest at an annual rate of 4.5%. How much money would be in her account after 2 years?John deposited $500 in a savings account that pays a simple interest rate of 2.5% per year. How much interest will he earn after 18 months?How much more interest will he earn after 24 months if the interest rate was 3.5% instead? Find the interest rates:After 6 months, $800 earned $4.80 in interest.After 18 months, a $1500 deposit made $56.25 in interest.Lisa received a $3,000 car loan. She plans on paying off the loan in 2 years. At the end of 2 years, Lisa will have paid $450 interest. What is the simple interest Pablo has $4,200 to invest for college. If Pablo invests $4,200 for 3 years and earns $630, what is the simple interest rate?Pablo’s goal is to have $5,000 after 4 years. Is this possible if he invests with a rate of return of 6%? Explain. Unit 3 Post-Test Review: Markup, Markdown (discount), Tax, Tip (gratuity), Percent Change & Error This is Part 1 of the Unit 3 Post Test Review Sheet. Round to the nearest cent (nearest hundredth) if necessary. A $300 mountain bike is discounted 30% and then discounted an additional 10% for shoppers who arrive before 5 AM.Find the final selling price of the bike.What was the total percent discount for the bike?A golf store purchases a set of clubs at a wholesale price of $250. Mr. Edmond learned that the clubs were marked up 200%. How much would it cost a customer to buy the golf set?A restaurant bill comes to $28.35. Find the total cost if the tax is 6.25% and a 20% tip is left on the amount before tax. The Wares want to buy a new computer. The regular price is $1,049. The store is offering a 20% discount and a sales tax of 5.25% is added after the discount. What is the total cost?The manager of a sporting goods store raises the price of a basketball from $24 to $28. What is the percent increase?In chemistry, Bob records the volume of a liquid as 18.1 ml. The actual volume is 18.7 ml. What is his percent error? Round to the nearest percent for this question. Simple Interest: Round to the nearest cent (nearest hundredth) when necessary. Find the simple interest earned:Principal: $640, rate: 3%, time: 2 years Principal: $1,500, rate: 4.25%, time: 4 yearsPrincipal: $580, rate: 2%, time: 6 monthsPrincipal: $1,200, rate: 3.9%, time: 8 monthsMonica deposit $450 into an account that earns simple interest at an annual rate of 4.5%. How much money would be in her account after 2 years?John deposited $500 in a savings account that pays a simple interest rate of 2.5% per year. How much interest will he earn after 18 months?How much more interest will he earn after 24 months if the interest rate was 3.5% instead? Find the interest rates:After 6 months, $800 earned $4.80 in interest.After 18 months, a $1500 deposit made $56.25 in interest.Lisa received a $3,000 car loan. She plans on paying off the loan in 2 years. At the end of 2 years, Lisa will have paid $450 interest. What is the simple interest Pablo has $4,200 to invest for college. If Pablo invests $4,200 for 3 years and earns $630, what is the simple interest rate?Pablo’s goal is to have $5,000 after 4 years. Is this possible if he invests with a rate of return of 6%? Explain. Unit 3 Post-Test Review: Markup, Markdown (discount), Tax, Tip (gratuity), Percent Change & Error This is Part 1 of the Unit 3 Post Test Review Sheet. Round to the nearest cent (nearest hundredth) if necessary. A $300 mountain bike is discounted 30% and then discounted an additional 10% for shoppers who arrive before 5 AM.Find the final selling price of the bike.What was the total percent discount for the bike?A golf store purchases a set of clubs at a wholesale price of $250. Mr. Edmond learned that the clubs were marked up 200%. How much would it cost a customer to buy the golf set?A restaurant bill comes to $28.35. Find the total cost if the tax is 6.25% and a 20% tip is left on the amount before tax. The Wares want to buy a new computer. The regular price is $1,049. The store is offering a 20% discount and a sales tax of 5.25% is added after the discount. What is the total cost?The manager of a sporting goods store raises the price of a basketball from $24 to $28. What is the percent increase?In chemistry, Bob records the volume of a liquid as 18.1 ml. The actual volume is 18.7 ml. What is his percent error? Round to the nearest percent for this question. Unit 3 Post-Test Review: Markup, Markdown (discount), Tax, Tip (gratuity), Percent Change & Error This is Part 2 of the Unit 3 Post Test Review Sheet. Round to the nearest cent (nearest hundredth) if necessary. Morgan’s mom wants to borrow $720 to buy a new computer. The store will charge her 8% simple interest for one year. How much will she have to pay back if she pays the full amount in one year?Michael bought a new STX lacrosse stick at Modell’s. A lacrosse stick that usually sells for $150 is on sale at a 12% discount. If the sales tax is 8.5%, what will the lacrosse stick cost?Serena, Alyssa, and Kiate have just finished lunch at the Rainforest café. Their bill came out to $32.94. There is a 6% sales tax. The girls have decided to leave a tip of 18% on the total amount of the bill. How much money did the entire bill come to including the tip?At Norma’s Discount Superstore, all sweaters are on sale for 35% off the regular price. If Damien has a coupon for an additional 20% off the discounted price, how much will he pay for a sweater that regularly costs $45?How much is the total percent of savings?Jessica went shopping for a new watch. She found a watch that was originally priced at $220 on sale for $180. What is the percent of decrease?The owner of the Outdoor Furniture Center decides to use 120% markup on a $50 chair. At the end of the season, he wants to sell all the benches that are in stock. He sells the benches for 20% off. What is the total price of a bench with this discount plus a 5% sales tax?Unit 3 Post-Test Review: Markup, Markdown (discount), Tax, Tip (gratuity), Percent Change & Error This is Part 2 of the Unit 3 Post Test Review Sheet. Round to the nearest cent (nearest hundredth) if necessary. Morgan’s mom wants to borrow $720 to buy a new computer. The store will charge her 8% simple interest for one year. How much will she have to pay back if she pays the full amount in one year?Michael bought a new STX lacrosse stick at Modell’s. A lacrosse stick that usually sells for $150 is on sale at a 12% discount. If the sales tax is 8.5%, what will the lacrosse stick cost?Serena, Alyssa, and Kiate have just finished lunch at the Rainforest café. Their bill came out to $32.94. There is a 6% sales tax. The girls have decided to leave a tip of 18% on the total amount of the bill. How much money did the entire bill come to including the tip?At Norma’s Discount Superstore, all sweaters are on sale for 35% off the regular price. If Damien has a coupon for an additional 20% off the discounted price, how much will he pay for a sweater that regularly costs $45?How much is the total percent of savings?Jessica went shopping for a new watch. She found a watch that was originally priced at $220 on sale for $180. What is the percent of decrease?The owner of the Outdoor Furniture Center decides to use 120% markup on a $50 chair. At the end of the season, he wants to sell all the benches that are in stock. He sells the benches for 20% off. What is the total price of a bench with this discount plus a 5% sales tax?Unit 3 Post-Test Review: Markup, Markdown (discount), Tax, Tip (gratuity), Percent Change & Error This is Part 2 of the Unit 3 Post Test Review Sheet. Round to the nearest cent (nearest hundredth) if necessary. Morgan’s mom wants to borrow $720 to buy a new computer. The store will charge her 8% simple interest for one year. How much will she have to pay back if she pays the full amount in one year?Michael bought a new STX lacrosse stick at Modell’s. A lacrosse stick that usually sells for $150 is on sale at a 12% discount. If the sales tax is 8.5%, what will the lacrosse stick cost?Serena, Alyssa, and Kiate have just finished lunch at the Rainforest café. Their bill came out to $32.94. There is a 6% sales tax. The girls have decided to leave a tip of 18% on the total amount of the bill. How much money did the entire bill come to including the tip?At Norma’s Discount Superstore, all sweaters are on sale for 35% off the regular price. If Damien has a coupon for an additional 20% off the discounted price, how much will he pay for a sweater that regularly costs $45?How much is the total percent of savings?Jessica went shopping for a new watch. She found a watch that was originally priced at $220 on sale for $180. What is the percent of decrease?The owner of the Outdoor Furniture Center decides to use 120% markup on a $50 chair. At the end of the season, he wants to sell all the benches that are in stock. He sells the benches for 20% off. What is the total price of a bench with this discount plus a 5% sales tax? ................
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