Vocabulary
The ______________ is the decrease from the original price of an item to its sale price.
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Find 0.8% of 1,046
8.368
Sharon paid $78 sales tax on a new camera. If the sales tax rate is 6.5%, what was the cost of the camera?
$1,200
In 2014, the attendance at Jefferson School’s Fall Festival was 650. In 2015, the attendance was 575. What was the percent change in attendance from 2014 to 2015? Round to the nearest whole percent.
About 12% decrease
Ethan put $700 into a Certificate of Deposit (CD) account that earns 1.8% interest each year. What will the interest of the CD account be after 6 years?
$75.60
The accuracy of a measured or estimated value compared to its actual value is described as the ___________________.
percent error
Find 160% of 98
156.8
There are 45 students who play a woodwind instrument in the school band. Of these, 18 play the saxophone. What percent of these students play the saxophone?
40%
Melissa estimated that she would read 250 pages last week. She read 290 pages. What is the percent error of Melissa’s estimate? Round to the nearest whole percent.
About 14%
Kelly opened a bank account that earns 1.2% simple interest each year. After 7 years, Kelly will earn $126 in interest. How much did Kelly deposit when she opened the account?
$1,500
An initial amount of money that is deposited in an account it called the __________________.
principal
A company charges a shipping fee that is 4.5% of the purchase price for all items it ships. What is the fee to ship an item that costs $56?
$2.52
Liam puts $40 in savings in March and 175% of this amount in savings in April. How much does Liam put in savings in April?
$70
Hank buys a used car for $7,200 and plans to sell it on his used car lot. What is the price of the car after a markup of 15%?
$8,280
Daily Double: How can percents show proportional relationships between quantities and be used to solve problems?
A percent is a ratio that compares a number to 100. If this ratio is equivalent to another ratio in a problem, you can often solve the problem by setting the ratios equal to each other and solving the equation. This method can be used in problems that involve discounts, sales tax, simple interest, tips, commissions, fees, percent increase and decrease, and percent error.
The __________ describes how much a quantity has changed relative to its original amount.
percent change
24.94 is 29% of what number
86
Nya wants to buy a sweater that had an original price of $55. The sweater is now discounted 20% and the sales tax rate is 5.5%. How much will Nya pay for the sweater?
$46.42
Birute deposits $500 in a savings account with a simple interest rate of 1.3%. How could you use this information to find the interest she would earn in 4 years and determine the percent change in her savings account?
Use the simple interest formula, with a principal of $500 and a simple interest rate of 1.3%, to determine that she will earn $26. Substitute $26 as the part and $500 as the whole in the percent equation and solve for the percent.
On Thursday, a restaurant serves iced tea to 35 of its 140 customers. What percent of the customers order iced tea?
25%