February 09, 2015
Finding Simple Interest
I = prt
I=
p=
r=
t=
February 09, 2015
Anita deposits $320 into account that earns 4% simple interest per
year. What is the total amount in the account after 3 years?
Step 1:
Step 2:
plug it in, plug it in
February 09, 2015
Luke Bryan borrows $400 from Ms. Crane for a 4 year loan. He is
charged 5% simple interest per year. How much interest is he charged
for the total 4 years? What is the total cost that Luke Bryan will pay
after 4 years?
February 09, 2015
What if Luke took out a 6 year loan? How much would he pay
total???
February 09, 2015
February 09, 2015
February 09, 2015
Percent of change
Percent of change =
Step 1: plug in numbers into formula
Step 2: divide to get answer
Step 3: change to percent
February 09, 2015
Linley buys leather pants for $27.99 on
Wednesday. She goes back to the store on
Sunday and sees that they are now only
$14.99. What is the percent of change?
February 09, 2015
The number of Vanilla Ice fans in 1993 was 654. In 2013, the number
of fans decreased to 430. What is the percent of decrease?
February 09, 2015
Team:
Mrs. Phillips makes friendship bracelets. It costs her $4.25 to
make each bracelet and she sells each one for $5.50. What is the
percent of increase for each bracelet she sells?
February 09, 2015
Pair:
Mrs. Kirchner estimates that Mason weighs 25 pounds. In
reality, Mason weighs 21 pounds. What is the percent of
error? (hint: find percent of change--it's the same thing!)
February 09, 2015
Solo:
Bart buys 40 pair of socks in 2000. He now has 15 pair of socks left.
What is the percent of decrease?